MAX3222EEUP资料

来源：意榕旅游网

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19-1298; Rev 10; 1/06

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

General Description

Next-Generation Device FeaturesThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E +3.0V-powered EIA/TIA-232 and V.28/V.24♦For Space-Constrained Applications

communications interface devices feature low power con-MAX3228E/MAX3229E: ±15kV ESD-Protected, sumption, high data-rate capabilities, and enhanced+2.5V to +5.5V, RS-232 Transceivers in UCSPelectrostatic-discharge (ESD) protection. The enhancedESD structure protects all transmitter outputs and ♦For Low-Voltage or Data Cable Applications

receiver inputs to ±15kV using IEC 1000-4-2 Air-GMAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, Discharge, ±8kV using IEC 1000-4-2 Contact Dischargeap2Tx/2Rx, RS-232 Transceivers with ±15kV (±9kV for MAX3246E), and ±15kV using the Human BodyESD-Protected I/O and Logic Pins

Model. The logic and receiver I/O pins of the MAX3237Eare protected to the above standards, while the transmit-ter output pins are protected to ±15kV using the HumanBody Model.

_______________Ordering InformationA proprietary low-dropout transmitter output stage deliversPKGtrue RS-232 performance from a +3.0V to +5.5V powerPART TEMP RANGEPIN-PACKAGECODEsupply, using an internal dual charge pump. The chargepump requires only four small 0.1µF capacitors for opera-20 Thin QFN-tion from a +3.3V supply. Each device guarantees opera-MAX3222ECTP 0°C to +70°CEP** (5mm xT2055-5tion at data rates of 250kbps while maintaining RS-2325mm)output levels. The MAX3237E guarantees operation atMAX3222ECUP 0°C to +70°C20 TSSOP—250kbps in the normal operating mode and 1Mbps in theMAX3222ECAP 0°C to +70°C20 SSOP—MegaBaud™ operating mode, while maintaining RS-232-compliant output levels.

MAX3222ECWN 0°C to +70°C18 Wide SO—The MAX3222E/MAX3232E have two receivers and twoMAX3222ECPN 0°C to +70°C18 Plastic DIP—transmitters. The MAX3222E features a 1µA shutdownMAX3222EC/D 0°C to +70°CDice*—mode that reduces power consumption in battery-pow-20 Thin QFN-ered portable systems. The MAX3222E receivers remainMAX3222EETP-40°C to +85°CEP** (5mm xT2055-5active in shutdown mode, allowing monitoring of external5mm)devices while consuming only 1µA of supply current. TheMAX3222E and MAX3232E are pin, package, and func-MAX3222EEUP-40°C to +85°C20 TSSOP—tionally compatible with the industry-standard MAX242MAX3222EEAP-40°C to +85°C20 SSOP—and MAX232, respectively.

MAX3222EEWN-40°C to +85°C18 Wide SO—The MAX3241E/MAX3246E are complete serial portsMAX3222EEPN-40°C to +85°C18 Plastic DIP—(three drivers/five receivers) designed for notebook andsubnotebook computers. The MAX3237E (five drivers/MAX3232ECAE 0°C to +70°C16 SSOP—three receivers) is ideal for peripheral applications thatMAX3232ECWE 0°C to +70°C16 Wide SO—require fast data transfer. These devices feature a shut-MAX3232ECPE 0°C to +70°C16 Plastic DIP—down mode in which all receivers remain active, whileconsuming only 1µA (MAX3241E/MAX3246E) or 10nA*Dice are tested at TA= +25°C, DC parameters only.(MAX3237E).

**EP = Exposed paddle.

The MAX3222E, MAX3232E, and MAX3241E are avail-able in space-saving SO, SSOP, TQFN and TSSOP pack-ages. The MAX3237E is offered in an SSOP package.Ordering Information continued at end of data sheet.The MAX3246E is offered in the ultra-small 6 x 6 UCSP™package.

Pin Configurations, Selector Guide, and Typical OperatingApplicationsCircuits appear at end of data sheet.

Battery-Powered EquipmentPrinters

MegaBaud and UCSPare trademarks of Maxim IntegratedCell Phones

Smart PhonesProducts, Inc.

Cell-Phone Data CablesxDSL Modems

†Covered by U.S. Patent numbers 4,636,930; 4,679,134;

Notebook, Subnotebook,4,777,577; 4,797,9; 4,809,152; 4,7,774; 4,999,761; andand Palmtop Computers

other patents pending.

________________________________________________________________Maxim Integrated Products1

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-42, or visit Maxim’s website at www.maxim-ic.com.

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EABSOLUTE MAXIMUM RATINGS

VCCto GND..............................................................-0.3V to +6V18-Pin PDIP (derate 11.11mW/°C above +70°C)..........8mWV+ to GND (Note 1)..................................................-0.3V to +7V20-Pin TQFN (derate 21.3mW/°C above +70°C)........1702mWV- to GND (Note 1)...................................................+0.3V to -7V20-Pin TSSOP (derate 10.9mW/°C above +70°C)........879mWV+ + |V-| (Note 1).................................................................+13V20-Pin SSOP (derate 8.00mW/°C above +70°C)..........0mWInput Voltages28-Pin SSOP (derate 9.52mW/°C above +70°C)..........762mWT_IN, EN, SHDN, MBAUD to GND........................-0.3V to +6V28-Pin Wide SO (derate 12.50mW/°C above +70°C).............1WR_IN to GND.....................................................................±25V28-Pin TSSOP (derate 12.8mW/°C above +70°C)......1026mWOutput Voltages32-Lead Thin QFN (derate 33.3mW/°C above +70°C)..2666mWT_OUT to GND...............................................................±13.2V6 x 6 UCSP (derate 12.6mW/°C above +70°C).............1010mWR_OUT, R_OUTB (MAX3241E)................-0.3V to (VCC+ 0.3V)Operating Temperature RangesShort-Circuit Duration, T_OUT to GND.......................ContinuousMAX32_ _EC_ _...................................................0°C to +70°CContinuous Power Dissipation (TA= +70°C)MAX32_ _EE_ _.................................................-40°C to +85°C16-Pin SSOP (derate 7.14mW/°C above +70°C)..........571mWStorage Temperature Range.............................-65°C to +150°C16-Pin TSSOP (derate 9.4mW/°C above +70°C).......7.7mWLead Temperature (soldering, 10s).................................+300°C16-Pin TQFN (derate 20.8mW/°C above +70°C).....1666.7mWBump Reflow Temperature (Note 2)16-Pin Wide SO (derate 9.52mW/°C above +70°C).....762mWInfrared, 15s..................................................................+200°C18-Pin Wide SO (derate 9.52mW/°C above +70°C).....762mWVapor Phase, 20s..........................................................+215°CNote 1:V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.

Note 2:This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device

can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recom-mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow.Preheating is required. Hand or wave soldering is not allowed.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(VCC= +3V to +5.5V, C1–C4 = 0.1µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 3, 4)

PARAMETERCONDITIONSMAX3222E, MAX3232E,MAX3241E, MAX3246EMAX3237EShutdown Supply Current LOGIC INPUTSInput Logic LowInput Logic HighTransmitter Input HysteresisInput Leakage CurrentRECEIVER OUTPUTSOutput Leakage CurrentOutput-Voltage LowR_OUT (MAX3222E/MAX3237E/MAX3241E/MAX3246E), EN = VCC, receivers disabledIOUT = 1.6mA (MAX3222E/MAX3232E/MAX3241E/MAX3246E), IOUT = 1.0mA (MAX3237E)±0.05±100.4µAVT_IN, EN, SHDNT_IN, SHDN, MBAUDMAX3222E, MAX3232E,MAX3241E, MAX3246EMAX3237E (Note 5)T_IN, EN, SHDN, MBAUDT_IN, EN, SHDN, MBAUDVCC = +3.3VVCC = +5.0V2.02.40.5±0.019±1180.8VVVµASHDN = GNDSHDN = R_IN = GND, T_IN = GND or VCC (MAX3237E)MINTYPMAXUNITSDC CHARACTERISTICS (VCC = +3.3V or +5V, TA = +25°C)Supply CurrentSHDN = VCC, no load0.30.511012.010300µAnAmA2_______________________________________________________________________________________元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

ELECTRICAL CHARACTERISTICS (continued)(VCC= +3V to +5.5V, C1–C4 = 0.1µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 3, 4)PARAMETERCONDITIONSMINTYPMAXUNITSOutput-Voltage HighIOUT = -1.0mAVCC -VCC -0.60.1V RECEIVER INPUTSInput Voltage Range-25+25VInput Threshold LowTV0.61.1A = +25°CCC = +3.3VVCC = +5.0V0.81.5VInput Threshold HighTVA = +25°CCC = +3.3V1.52.4VCC = +5.0V2.02.4VInput Hysteresis0.5VInput ResistanceTA = +25°C357kΩ TRANSMITTER OUTPUTSOutput Voltage SwingAll transmitter outputs loaded with 3kΩ to ground(Note 6)±5±5.4VOutput ResistanceVCC = 0, transmitter output = ±2V30050kΩOutput Short-Circuit Current±60mAOutput Leakage CurrentV CC = 0 or + 3.0V to + 5.5V , V OU T = ± 12V , tr ansm it ter sd is ab le d ( MA X 3222E /M AX 3232E /M AX 3241E /M AX 3246E ) ±25µA MOUSE DRIVABILITY (MAX3241E)T1IN = T2IN = GND, T3IN = VCC, T3OUT loaded withTransmitter Output Voltage3kΩ to GND, T1OUT and T2OUT loaded with 2.5mA±5Veach ESD PROTECTIONHuman Body Model±15R_IN, T_OUTIEC 1000-4-2 Air-Gap Discharge (except MAX3237E)±15IEC 1000-4-2 Contact Discharge (except MAX3237E)±8kVIEC 1000-4-2 Contact Discharge (MAX3246E only)±9T_IN, R_IN, R_OUT, EN, SHDN,Human Body Model±15MBAUDMAX3237EIEC1000-4-2 Air-Gap Discharge±15kVIEC1000-4-2 Contact Discharge±8_______________________________________________________________________________________3

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246ETIMING CHARACTERISTICS—MAX3222E/MAX3232E/MAX3241E/MAX3246E

(VCC= +3V to +5.5V, C1–C4 = 0.1µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 3, 4)PARAMETERSYMBOLCONDITIONSRL = 3kΩ,CL = 1000pF,one transmitterswitchingtPHLtPLHTA = TMIN to TMAX(MAX3222E/MAX3232E/MAX3241E) (Note 6) + 25°C ( MA X 3246E ) TA = MIN2502500.150.1520020010050 + 3.3V , TA = + 25°C ,V CC = RL = 3kΩ to 7kΩ, m easur ed fr om + 3.0V to - 3.0V or - 3.0V to+ 3.0V , one tr ansm it ter sw it chi ng CL = 150pFto 1000pFµsnsnsnsnsTYPMAXUNITSMaximum Data RatekbpsReceiver Propagation DelayReceiver Output Enable TimeReceiver Output Disable TimeTransmitter SkewReceiver SkewReceiver input to receiver output,CL = 150pFNormal operation (except MAX3232E)Normal operation (except MAX3232E)|tPHL - tPLH||tPHL - tPLH|(Note 7)Transition-Region Slew Rate630V/µsTIMING CHARACTERISTICS—MAX3237E

(VCC= +3V to +5.5V, C1–C4 = 0.1µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Note 3)

PARAMETERCONDITIONSRL = 3kΩ, CL = 1000pF, one transmitter switching,MBAUD = GNDMaximum Data RateVCC = +3.0V to +4.5V, RL = 3kΩ, CL = 250pF,one transmitter switching, MBAUD = VCCVCC = +4.5V to +5.5V, RL = 3kΩ, CL = 1000pF,one transmitter switching, MBAUD = VCCReceiver Propagation DelayReceiver Output Enable TimeReceiver Output Disable TimeTransmitter Skew (Note 7)Receiver SkewR_IN to R_OUT, CL = 150pFNormal operationNormal operation| tPHL - tPLH |, MBAUD = GND| tPHL - tPLH |, MBAUD = VCC| tPHL - tPLH |VCC = +3.3V,RL = 3kΩ to 7kΩ,+3.0V to -3.0V or-3.0V to +3.0V,TA = +25°CCL = 150pFto 1000pFMBAUD = GNDMBAUD = VCC624tPHLtPLHMIN250100010000.150.152.62.41005030150V/µsµsµsµsnsnskbpsTYPMAXUNITSTransition-Region Slew RateCL = 150pF to 2500pF,430MBAUD = GNDNote 3:MAX3222E/MAX3232E/MAX3241E: C1–C4 = 0.1µF tested at +3.3V ±10%; C1 = 0.047µF, C2, C3, C4 = 0.33µF tested at +5.0V±10%. MAX3237E: C1–C4 = 0.1µF tested at +3.3V ±5%, C1–C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.047µF, C2, C3, C4 =0.33µF testedat +5.0V ±10%. MAX3246E; C1-C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.22µF, C2, C3, C4 = 0.µF tested at5.0V ±10%.

Note 4:MAX3246E devices are production tested at +25°C. All limits are guaranteed by design over the operating temperature range.Note 5:The MAX3237E logic inputs have an active positive feedback resistor. The input current goes to zero when the inputs are at

the supply rails.

Note 6:MAX3241EEUI is specified at TA= +25°C.

Note 7:Transmitter skew is measured at the transmitter zero crosspoints.

4_______________________________________________________________________________________

元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

__________________________________________Typical Operating Characteristics

(VCC= +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩand CL, TA = +25°C, unless otherwise noted.)

MAX3222E/MAX3232E

MAX3222E/MAX3232ETRANSMITTER OUTPUT VOLTAGE

MAX3222E/MAX3232E

OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCE

SLEW RATE vs. LOAD CAPACITANCE

vs. LOAD CAPACITANCE

61016245

300ccoottV OUT+EET1 TRANSMITTING AT 250kbpscot E7)53V2147732403(3 XXT2 TRANSMITTING AT 15.6kbps323E4AAXGM-SLEWMAMAT3T1 TRANSMITTING AT 250kbps12)35AL)Osm250kbps(V2T2 TRANSMITTING AT 15.6kbpsµ /T30 TV10NU( EP1ERTT8+SLEWR25120kbpsUAO0RU C RW Y20E-1E6LTLPTSPIM-2U1520kbpsS4

SN-3A10

RT-4V-5OUT-2

FOR DATA RATES UP TO 250kbps5-6

1000

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LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)

MAX3241E

TRANSMITTER OUTPUT VOLTAGE

MAX3241E

OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCE

SLEW RATE vs. LOAD CAPACITANCE

vs. LOAD CAPACITANCE

145606000oct oEt 7E1 TRANSMITTER AT 250kbpscot EV37)57OUT+23V32(X3AX502 TRANSMITTERS AT 15.6kbps323 XE412MAMAGA)250kbpsMT3LO1 TRANSMITTER AT 250kbpsA)s10mV22 TRANSMITTERS AT 15.6kbpsµ( 40 /TTUVN120kbps( EP1E8RTTUARO0RU30

CRE-1W YTE6L20kbpsTLPIPM-2S4

U20SSN-3ART-4VOUT-210-5-6

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010002000300040005000

LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)

MAX3237E

TRANSMITTER OUTPUT VOLTAGETRANSMITTER OUTPUT VOLTAGE

MAX3237E

vs. LOAD CAPACITANCE (MBAUD = GND)

vs. LOAD CAPACITANCE

TRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCE (MBAUD = V670A7.5

CC)

80c67o0c5to ctE 7otE3 7)2VVOUT+)VE335(OUT+1Mbps6)2XA4M E4V( 42V3X3(AX GFOR DATA RATES UP TO 250kbpsEAE5.0MMG2MbpsAT3G1 TRANSMITTER AT 250kbpsAT3AT1.5MbpsLLOV2L4 TRANSMITTERS AT 15.6kbpsOV2 TFOR DATA RATES UP TO 250kbpsOV2.5U1ALL TRANSMITTERS LOADED TUPP1 TRANSMITTER 250kbpsTU1 TRANSMITTER AT FULL DATA RATET0WITH 3kΩ + C1LPTUUOO04 TRANSMITTERS 15.6kbpsTUO04 TRANSMITTERS AT 1/16 DATA RATE -1 RREE-1ALL TRANSMITTERS LOADED 3kΩ + CL LOAD, EACH OUTPUT RTTWITH 3kΩ + CELTIM-2TTIM-2TIM-2.5SN-3SN-3SNAART-4ARVT-4RT-5.02Mbps1.5Mbps-5OUT--5VOUT-1Mbps-6

-6-7.5

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LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)

_______________________________________________________________________________________

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246ETypical Operating Characteristics (continued)(VCC= +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩand CL, TA = +25°C, unless otherwise noted.)

MAX3237E

SLEW RATE vs. LOAD CAPACITANCE

(MBAUD = GND)

MAX3237E toc09MAX3237E toc1010

SR-SLEW RATE (V/µs)8

SR+200

1 TRANSMITTER AT 250kbps4 TRANSMITTERS AT 15.6kbpsALL TRANSMITTERS LOADED WITH 3kΩ + CL500

1000

1500

2000

2500

60SLEW RATE (V/µs)50403020100

1 TRANSMITTER AT FULL DATA RATE4 TRANSMITTERS AT 1/16 DATA RATE3kΩ + CL LOAD EACH OUTPUT0

500

1000

1500

-SLEW, 1Mbps+SLEW, 1Mbps-SLEW, 2Mbps+SLEW, 2Mbps250kbps40SUPPLY CURRENT (mA)120kbps20kbps30

1 TRANSMITTER AT 20kbps, 120kbps, 250kbps4 TRANSMITTERS AT 15.6kbpsALL TRANSMITTERS LOADED WITH 3kΩ + CL0

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LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)

MAX3237E toc12TRANSMITTER OUTPUT VOLTAGE (V)VOUT+MAX3237E toc13TRANSMITTER SKEW (ns)SUPPLY CURRENT (mA)80

4030

6040

|tPLH - tPHL|1 TRANSMITTER AT 500kbps4 TRANSMITTERS AT 1/16 DATA RATEALL TRANSMITTERS LOADED WITH 3kΩ + CL0

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1 TRANSMITTER AT 250kbps4 TRANSMITTERS AT 15.6kbpsALL TRANSMITTERS LOADED WITH 3kΩ +1000pF2010

1 TRANSMITTER AT 250kbps4 TRANSMITTERS AT 15.6kbpsALL TRANSMITTERS LOADEDWITH 3kΩ AND 1000pF2.0

2.5

3.0

3.5

4.0

4.5

5.0

VOUT-0

2.0

2.5

3.0

3.5

4.0

4.5

5.0

SUPPLY VOLTAGE (V)

MAX3246E

TRANSMITTER OUTPUT VOLTAGE

vs. LOAD CAPACITANCE

763210-1-2-3-4-5-6

MAX3237E toc15MAX3246E

SLEW RATE vs. LOAD CAPACITANCE

MAX3237E toc16MAX3246E

OPERATING SUPPLY CURRENTvs. LOAD CAPACITANCE

55504035302520151050

20kbps1 TRANSMITTER AT 250kbps2 TRANSMITTERS AT 15.6kbpsMAX3237E toc171614SLEW RATE (V/µs)1210

SR+86

SR-60

TRANSMITTER OUTPUT VOLTAGE (V)VOUT+1 TRANSMITTER AT 250kbps2 TRANSMITTERS AT 15.6kbpsSUPPLY CURRENT (mA)250kbps120kbpsVOUT-4

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6_______________________________________________________________________________________

MAX3237E toc14100

MAX3237E

TRANSMITTER SKEW vs. LOAD CAPACITANCE

(MBAUD = VCC)

MAX3237E

TRANSMITTER OUTPUT VOLTAGEvs. SUPPLY VOLTAGE (MBAUD = GND)

63210-1-2-3-4-5-6

MAX3237E SUPPLY CURRENTvs. SUPPLY VOLTAGE (MBAUD = GND)

MAX3237E toc1112

MAX3237E

SLEW RATE vs. LOAD CAPACITANCE

(MBAUD = VCC)

MAX3237E

SUPPLY CURRENT vs. LOAD CAPACITANCEWHEN TRANSMITTING DATA (MBAUD = GND)

元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

Pin Description

PINMAX3222EMAX3232EMAX3241ESO/DIP/TQFNSO/TSSOP/MAX3237EDIPSSOPTQFNSSOP/20-PINSSOP/QFNMAX3246ENAMEFUNCTION16-PINTSSOPSOTSSOP1911———13*2322B3ENReceiver Enable. Activelow.Positive Terminal of1221612282828F3C1+Voltage-Doubler Charge-Pump Capacitor20331523272727F1V++5.5V Generated by theCharge PumpNegative Terminal of244134252423F4C1-Voltage-Doubler Charge-Pump CapacitorPositive Terminal of3552451129E1C2+Inverting Charge-PumpCapacitorNegative Terminal of4663563230D1C2-Inverting Charge-PumpCapacitor5774674331C1V--5.5V Generated by theCharge Pump6, 15158,8, 17125,7, 148, 175, 6, 7,6,10, 1210,9,7,F6, E6,T_OUTRS-232 Transmitter118D6Outputs7, 149,6,A4, A5,149, 16118, 139, 168, 9, 114–81–5A6, B6,R_INC6RS-232 Receiver Inputs13,8, 1310,7,12,18, 20,C2, B1,1310, 15109, 12152115–1914,15,A1, A2,R_OUTTTL/CMOS ReceiverA3Outputs17, 1817*, 19*,10, 1111,12,10,E3, E2,1212, 138, 910, 1113,1422*, 23*,13,D2T_INTTL/CMOS Transmitter24*1411,12Inputs*These pins have an active positive feedback resistor internal to the MAX3237E, allowing unused inputs to be left unconnected._______________________________________________________________________________________7

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EPin Description (continued)PINMAX3222ETQFN161718SO/DIP161718TSSOP/TQFNSSOP1819201314—MAX3232EMAX3241EFUNCTIONSO/DIP/NAMEMAX3237ESSOP/MAX3246ESSOP/20-PINSO/QFN16-PINTSSOPTSSOPTSSOP1516—1819—22614*252622242621F5F2B2GNDVCCSHDNGround+3.0V to +5.5V SupplyVoltageShutdown Control. Activelow.No Connection. ForMAX3246E, theselocations are notpopulated with solderbumps.MegaBaud Control Input.Connect to GND fornormal operation; connectto VCC for 1Mbpstransmission rates.NoninvertingComplementary ReceiverOutputs. Always active.Exposed Paddle. Solderthe exposed paddle tothe ground alone or leaveunconnected.9, 12—11, 14——1, 10,11, 20——C3, D3, B4,9, 16,C4, D4, E4,25,B5, C5, D5,32E5N.C.——————15*———MBAUD——————1620,2119, 20—R_OUTBEP——EP————EP—GND8_______________________________________________________________________________________

元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

VCCVCC 0.1µF 0.1µFC1+VCCV+C1+VCCV+C1 C3C1 C3C1-MAX3222EC1-MAX3222EC2+MAX3232EC2+MAX3232EMAX3237EV-MAX3237EV-C2 MAX3241EC4C2 MAX3241EC4C2-MAX3246EC2-MAX3246ET_ INT_ OUTT_ INT_ OUTR_ OUTR_ INR_ OUTR_ IN5kΩ5kΩGND3kΩ1000pF(2500pF, MAX3237E only)GND7kΩ150pFMINIMUM SLEW-RATE TEST CIRCUITMAXIMUM SLEW-RATE TEST CIRCUITFigure 1. Slew-Rate Test Circuits

Detailed Descriptioninto a high-impedance state when the device is in shut-Dual Charge-Pump Voltage Converter

down mode (SHDN= GND). The MAX3222E/The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3232E/MAX3237E/MAX3241E/MAX3246E permitMAX3246Es’ internal power supply consists of a regu-the outputs to be driven up to ±12V in shutdown.

lated dual charge pump that provides output voltagesThe MAX3222E/MAX3232E/MAX3241E/MAX3246Eof +5.5V (doubling charge pump) and -5.5V (invertingtransmitter inputs do not have pullup resistors. Connectcharge pump) over the +3.0V to +5.5V VCCrange. Theunused inputs to GND or VCC. The MAX3237E’s trans-charge pump operates in discontinuous mode; if themitter inputs have a 400kΩactive positive-feedbackoutput voltages are less than 5.5V, the charge pump isresistor, allowing unused inputs to be left unconnected.

enabled, and if the output voltages exceed 5.5V, thecharge pump is disabled. Each charge pump requiresMAX3237E MegaBaud Operation

a flying capacitor (C1, C2) and a reservoir capacitorFor higher-speed serial communications, the(C3, C4) to generate the V+ and V- supplies (Figure 1).

MAX3237E features MegaBaud operation. InMegaBaud operating mode (MBAUD = VCC), theRS-232 Transmitters

MAX3237E transmitters guarantee a 1Mbps data rateThe transmitters are inverting level translators that con-with worst-case loads of 3kΩin parallel with 250pF forvert TTL/CMOS-logic levels to ±5V EIA/TIA-232-compli-+3.0V < Vant levels.

MAX3237ECC< +4.5V. For +5V ±10% operation, thetransmitters guarantee a 1Mbps data rateThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/into worst-case loads of 3kΩin parallel with 1000pF.

MAX3246E transmitters guarantee a 250kbps data rateRS-232 Receivers

with worst-case loads of 3kΩin parallel with 1000pF,The receivers convert RS-232 signals to CMOS-logicproviding compatibility with PC-to-PC communicationoutput levels. The MAX3222E/MAX3237E/MAX3241E/software (such as LapLink™). Transmitters can be par-MAX3246E receivers have inverting three-state outputs.alleled to drive multiple receivers or mice.

Drive ENhigh to place the receiver(s) into a high-The MAX3222E/MAX3237E/MAX3241E/MAX3246Eimpedance state. Receivers can be either active ortransmitters are disabled and the outputs are forced

inactive in shutdown (Table 1).

LapLink is a trademark of Traveling Software.

_______________________________________________________________________________________9

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±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EVCC5V/div0SHDNT2OUTVCCPROTECTIONDIODERxPREVIOUSRS-2322V/div05kΩUARTTxGNDSHDN = GNDVCC = 3.3VC1–C4 = 0.1µF40µs/divT1OUTa) OLDER RS-232: POWERED-DOWN UART DRAWS CURRENT FROMA ACTIVE RECEIVER OUTPUT IN SHUTDOWN.VCCTOµPLOGICTRANSITIONDETECTORFigure 3. Transmitter Outputs Recovering from Shutdown orPowering Up

MAX3222E/MAX3237E/MAX3241E/

MAX3246E Shutdown Mode

MAX3237E/MAX3241ER1OUTBVCCPROTECTIONDIODERxR1OUTTHREE-STATEDEN = VCC5kΩR1INUARTTxGNDT1INSHDN = GNDT1OUTSupply current falls to less than 1µA in shutdown mode(SHDN= low). The MAX3237E’s supply current fallsto10nA (typ) when all receiver inputs are in the invalidrange (-0.3V < R_IN < +0.3). When shut down, thedevice’s charge pumps are shut off, V+ is pulled downto VCC, V- is pulled to ground, and the transmitter out-puts are disabled (high impedance). The time requiredto recover from shutdown is typically 100µs, as shownin Figure 3. Connect SHDNto VCCif shutdown mode isnot used. SHDNhas no effect on R_OUT or R_OUTB(MAX3237E/MAX3241E).

±15kV ESD Protection

As with all Maxim devices, ESD-protection structuresare incorporated to protect against electrostatic dis-charges encountered during handling and assembly.The driver outputs and receiver inputs of theMAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246Ehave extra protection against static electricity. Maxim’sengineers have developed state-of-the-art structures toprotect these pins against ESD of ±15kV without damage.The ESD structures withstand high ESD in all states:normal operation, shutdown, and powered down. Afteran ESD event, Maxim’s E versions keep working withoutlatchup, whereas competing RS-232 products can latchand must be powered down to remove latchup.

Furthermore, the MAX3237E logic I/O pins also have±15kV ESD protection. Protecting the logic I/O pins to±15kV makes the MAX3237E ideal for data cable applications.

b) NEW MAX3237E/MAX3241E: EN SHUTS DOWN RECEIVER OUTPUTS B (EXCEPT FOR B OUTPUTS), SO NO CURRENT FLOWS TO UART IN SHUTDOWN. B B OUTPUTS INDICATE RECEIVER ACTIVITY DURING SHUTDOWN WITH EN HIGH. Figure 2. Detection of RS-232 Activity when the UART andInterface are Shut Down; Comparison of MAX3237E/MAX3241E(b) with Previous Transceivers (a)The complementary outputs on the MAX3237E/MAX3241E(R_OUTB) are always active, regardless of thestate of ENor SHDN. This allows the device to be usedfor ring indicator applications without forward biasingother devices connected to the receiver outputs. This isideal for systems where VCCdrops to zero in shutdownto accommodate peripherals such as UARTs (Figure 2).

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±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

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Table 1. MAX3222E/MAX3237E/MAX3241E/ESD protection can be tested in various ways; theMAX3246E Shutdown and Enable Controltransmitter outputs and receiver inputs for theTruth TableMAX3222E/MAX3232E/MAX3241E/MAX3246E arecharacterized for protection to the following limits:R_OUTB•±15kV using the Human Body Model

SHDNENT_OUTR_OUT(MAX3237E/•±8kV using the Contact Discharge method specifiedMAX3241E)in IEC 1000-4-2

00HighimpedanceActiveActive•±9kV (MAX3246E only) using the Contact Dischargemethod specified in IEC 1000-4-2

01HighHigh±15kV using the Air-Gap Discharge method speci-impedanceimpedanceActive•fied in IEC 1000-4-2

10ActiveActiveActive11ActiveHighimpedanceActiveRC RD 1MΩ1500ΩIP 100%I90%rPEAK-TO-PEAK RINGING(NOT DRAWN TO SCALE)CHARGE-CURRENT-DISCHARGELIMIT RESISTORRESISTANCEAMPERESHIGH-DEVICE-36.8%VOLTAGECsSTORAGE100pFCAPACITORUNDER-DCTEST10%SOURCE00tRLTIMEtDLCURRENT WAVEFORMFigure 4a. Human Body ESD Test ModelFigure 4b. Human Body Model Current Waveform

I100%RC RD 50MΩ to 100MΩ330Ω90%CHARGE-CURRENT-DISCHARGELIMIT RESISTORRESISTANCEKAEPIHIGH- VOLTAGECSTORAGEDEVICE-s150pFCAPACITORUNDER-DCTESTSOURCE10%tr = 0.7ns to 1nst30ns60nsFigure 5a. IEC 1000-4-2 ESD Test ModelFigure 5b. IEC 1000-4-2 ESD Generator Current Waveform

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MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EVCC(V)3.0 to 3..5 to 5.53.0 to 5.5MAX3237E/MAX3246E3.0 to 3.63.15 to 3..5 to 5.53.0 to 5.5C1(µF)0.10.0470.10.220.10.0470.22C2, C3, C4(µF)0.10.330.470.220.10.331.0TRANSMITTER OUTPUT VOLTAGE (V)3210-1-2-3-4-5-601234567VCCVOUT-VOUT-VCC = 3.0VVOUT+VOUT+MAX3222E/MAX3232E/MAX3241E10LOAD CURRENT PER TRANSMITTER (mA)Table 3. Logic-Family Compatibility withVarious Supply Voltages

SYSTEMPOWER-SUPPLYVOLTAGE(V)3.3VCC SUPPLYVOLTAGE(V)3.3COMPATIBILITYFigure 6a. MAX3241E Transmitter Output Voltage vs. LoadCurrent Per Transmitter

IEC 1000-4-2

The IEC 1000-4-2 standard covers ESD testing andperformance of finished equipment; it does not specifi-cally refer to integrated circuits. The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E help youdesign equipment that meets level 4 (the highest level)of IEC 1000-4-2, without the need for additional ESD-protection components.

The major difference between tests done using theHuman Body Model and IEC 1000-4-2 is higher peakcurrent in IEC 1000-4-2, because series resistance islower in the IEC 1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 1000-4-2 is generallylower than that measured using the Human BodyModel. Figure 5a shows the IEC 1000-4-2 model, andFigure 5b shows the current waveform for the ±8kV IEC1000-4-2 level 4 ESD Contact Discharge test. The Air-Gap Discharge test involves approaching the devicewith a charged probe. The Contact Discharge methodconnects the probe to the device before the probe isenergized.

Compatible with allCMOS familiesCompatible with allTTL and CMOSfamiliesC om pa ti bl e w it h AC Tand H CT C M OS , and w it h AC , H C, or C D 4000 C MO S 5553.3For the MAX3237E, all logic and RS-232 I/O pins arecharacterized for protection to ±15kV per the HumanBody Model.

ESD Test Conditions

ESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documentstest setup, test methodology, and test results.

Machine Model

The Machine Model for ESD tests all pins using a200pF storage capacitor and zero discharge resis-tance. Its objective is to emulate the stress caused bycontact that occurs with handling and assembly duringmanufacturing. All pins require this protection duringmanufacturing, not just RS-232 inputs and outputs.Therefore, after PC board assembly, the MachineModel is less relevant to I/O ports.

Human Body Model

Figure 4a shows the Human Body Model, and Figure4b shows the current waveform it generates when dis-charged into a low impedance. This model consists ofa 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a1.5kΩresistor.

______________________________________________________________________________________

MAX3222E-fig06aTable 2. Required Minimum CapacitorValues

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±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

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VCC = +3.0V TO +5.5V CBYPASS 2628C1+VC1CCV+2724C1-C3 COMPUTER SERIAL PORT1C2+MAX3241EV-3C22C4C2-14T1INT1OUT9+V13T2INT2OUT10VCC12T3IN+VT3OUT1121R1OUTB-V20R2OUTBGND19R1OUTR1IN4Tx18R2OUT5kΩR2IN517R3OUT5kΩR3IN616R4OUT5kΩR4IN7MOUSE15R5OUT5kΩR5IN823EN5kΩ22GNDSHDNVCC25Figure 6b. Mouse Driver Test Circuit

Applications Informationexcessively with temperature. If in doubt, use capaci-Capacitor Selection

tors with a larger nominal value. The capacitor’s equiv-The capacitor type used for C1–C4 is not critical foralent series resistance (ESR), which usually rises at lowproper operation; polarized or nonpolarized capacitorstemperatures, influences the amount of ripple on V+can be used. The charge pump requires 0.1µF capaci-and V-.

tors for 3.3V operation. For other supply voltages, seePower-Supply Decoupling

Table 2 for required capacitor values. Do not use val-In most circumstances, a 0.1µF Vues smaller than those listed in Table 2. Increasing theis adequate. In applications sensitive to power-supplyCCbypass capacitorcapacitor values (e.g., by a factor of 2) reduces ripplenoise, use a capacitor of the same value as charge-on the transmitter outputs and slightly reduces powerpump capacitor C1. Connect bypass capacitors asconsumption. C2, C3, and C4 can be increased withoutclose to the IC as possible.

changing C1’s value. However, do not increase C1without also increasing the values of C2, C3, C4,Operation Down to 2.7V

and CBYPASSto maintain the proper ratios (C1 toTransmitter outputs meet EIA/TIA-562 levels of ±3.7Vthe other capacitors).

with supply voltages as low as 2.7V.

When using the minimum required capacitor values,make sure the capacitor value does not degrade

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MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246ETransmitter Outputs Recovering

from Shutdown

Figure 3 shows two transmitter outputs recovering fromshutdown mode. As they become active, the two trans-mitter outputs are shown going to opposite RS-232 levels(one transmitter input is high; the other is low). Eachtransmitter is loaded with 3kΩin parallel with 2500pF.The transmitter outputs display no ringing or undesir-able transients as they come out of shutdown. Note that

the transmitters are enabled only when the magnitudeof V- exceeds approximately -3.0V.

Mouse Drivability

The MAX3241E is designed to power serial mice whileoperating from low-voltage power supplies. It hasbeen tested with leading mouse brands from manu-facturers such as Microsoft and Logitech. TheMAX3241E successfully drove all serial mice testedand met their current and voltage requirements.

VCC 0.1µFT1INC1+C1 C1-C2+C2 C2-VCCV+C35V/divMAX3222EMAX3232EMAX3237EMAX3241EMAX3246ET1OUTV-C45V/divR1OUTT_ OUT5V/divVCC = 3.3V, C1–C4 = 0.1µF2µs/divT_ INR_ OUTR_ IN5kΩFigure 9. MAX3241E Loopback Test Result at 250kbps

1000pFGND+5V0T_INFigure 7. Loopback Test Circuit

+5V0-5V+5VVCC = 3.3VC1–C4 = 0.1µFT_OUT5kΩ + 250pFT1IN5V/divR_OUT0400ns/div5V/divT1OUTFigure 10. MAX3237E Loopback Test Result at 1000kbps(MBAUD = VCC)

VCC = 3.3VC1–C4 = 0.1µF2µs/div5V/divR1OUTFigure 8. MAX3241E Loopback Test Result at 120kbps14

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±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

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Figure 6a shows the transmitter output voltages underUCSP Reliability

increasing load current at +3.0V. Figure 6b shows aThe UCSP represents a unique packaging form factortypical mouse connection using the MAX3241E.

that may not perform equally to a packaged productHigh Data Rates

through traditional mechanical reliability tests. UCSPThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/reliability is integrally linked to the user’s assemblyMAX3246E maintain the RS-232 ±5V minimum transmit-methods, circuit board material, and usage environ-ter output voltage even at high data rates. Figure 7ment. The user should closely review these areas whenshows a transmitter loopback test circuit. Figure 8considering use of a UCSP package. Performanceshows a loopback test result at 120kbps, and Figure 9through Operating Life Test and Moisture Resistanceshows the same test at 250kbps. For Figure 8, all trans-remains uncompromised as the wafer-fabricationmitters were driven simultaneously at 120kbps into RS-process primarily determines it.

232 loads in parallel with 1000pF. For Figure 9, a singleMechanical stress performance is a greater considera-transmitter was driven at 250kbps, and all transmitterstion for a UCSP package. UCSPs are attached throughwere loaded with an RS-232 receiver in parallel withdirect solder contact to the user’s PC board, foregoing1000pF.

the inherent stress relief of a packaged product leadThe MAX3237E maintains the RS-232 ±5.0V minimumframe. Solder joint contact integrity must be consid-transmitter output voltage at data rates up to 1Mbps.ered. Table 4 shows the testing done to characterizeFigure 10 shows a loopback test result at 1Mbps withthe UCSP reliability performance. In conclusion, theMBAUD = VUCSP is capable of performing reliably through envi-loaded with an RS-232 receiver in parallel with 250pF.

CC. For Figure 10, all transmitters wereronmental stresses as indicated by the results in thetable. Additional usage data and recommendations areInterconnection with 3V and 5V Logic

detailed in the UCSP application note, which can beThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/found on Maxim’s website at www.maxim-ic.com.

MAX3246E can directly interface with various 5V logicfamilies, including ACT and HCT CMOS. See Table 3for more information on possible combinations of inter-connections.

Table 4. Reliability Test Data

TESTCONDITIONSDURATIONFAILURES PERSAMPLE SIZETemperature CycleTA = -35°C to +85°C,150 cycles,0/10,TA = -40°C to +100°C900 cycles0/200Operating LifeTA = +70°C240 hours0/10Moisture ResistanceTA = +20°C to +60°C, 90% RH240 hours0/10Low-Temperature StorageTA = -20°C240 hours0/10Low-Temperature OperationalTA = -10°C24 hours0/10Solderability8-hour steam age—0/15ESD±15kV, Human Body Model—0/5High-Temperature OperatingLifeTJ = +150°C168 hours0/45______________________________________________________________________________________15

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MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E__________________________________________________________Pin Configurations

TOP VIEWEN1C1+2V+3C1-4C2+5C2-V-T2OUTR2IN6718SHDN17VCC16GND15T1OUTEN1C1+2V+3C1-4C2+5C2-6V-7T2OUT8R2IN9R2OUT1020SHDN19VCC18GND17T1OUTN.C.1C1+2V+3C1-4C2+5C2-6V-7T2OUT8R2IN9N.C.1020N.C.19VCC18GND17T1OUTC1+1V+2C1-3C2+4C2-5V-6T2OUT7R2IN816VCC15GND14T1OUTMAX3232E13R1IN12R1OUT11T1IN10T2IN9R2OUTMAX3222E14R1IN13R1OUT12T1IN11T2IN10R2OUTMAX3222E16R1IN15R1OUT14N.C.13T1IN12T2IN11N.C.MAX3232E16R1IN15R1OUT14T1IN13T2IN12R2OUT11N.C.SO/DIP/SSOP/TSSOPSO/DIPTSSOP/SSOPTSSOPTOP VIEWN.C.C2+C1+323130292827C2-V-T1OUTT2OUTT3OUTR1INR2IN3456726VCC25C1-V-R1INR2INR3INR4INR5INT1OUT3456726VCC25GND262524232221GND227V+C2-227V+V-V+C2+128C1+C2+128C1+VCCC2-N.C.R1INR2INR3INR4INR5INT1OUTT2OUTT3OUT1234567810111213141516GNDC1-ENSHDNR1OUTBR2OUTBR1OUTR2OUTMAX3237E24T1IN23T2IN22T3IN21R1OUT20R2OUT19T4IN18R3OUT17T5IN16R1OUTB15MBAUDMAX3241E24C1-23EN22SHDN21R1OUTB20R2OUTB19R1OUT18R2OUT17R3OUT16R4OUT15R5OUTMAX3241E20191817T4OUT10R3IN11T5OUT12EN13SHDN14T2OUT10T3OUT11T3IN12T2IN13T1IN149T3INT2INT1INN.C.R5OUTR4OUTSSOPSSOP/SO/TSSOPQFN16______________________________________________________________________________________

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Pin Configurations (continued)

TOP VIEWTTTTUNU.UUOCNTOP VIEWONIOIION11I1.1111TRRN1TTRRT15141312111211109GND1610T2INGND138T2INVCC179N.C.VCC147R2OUTSHDN18MAX3222E8R2OUTENV+15MAX3232E6R2IN19EXPOSED 7R2INEXPOSED V+20PADDLE6T2OUTC1+16PADDLE5T2OUT123451234+---11+-V+--22CC21CCC2CCVTQFNTQFNTOP VIEW(BUMPS ON BOTTOM)B2: SHDNC2: R1OUTD2: T3INR4OUTR5OUTR1INR2INE2: T2INB3: ENR3OUTA1A2A3A4A5A6R3INE3: T1INBUMPS B4, B5, C3, C4,C5, D3, D4, D5, E4, ANDR2OUTB1B2B3B6R4INE5 NOT POPULATEDV-C1C2C6R5INMAX3246EC2-D1D2D6T3OUTC2+E1E2E3E6T2OUTV+F1F2F3F4F5F6T1OUTVCCC1+C1-GNDUCSP______________________________________________________________________________________17MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E__________________________________________________Typical Operating Circuits

+3.3VCBYPASS C10.1µF2C1+45 C20.1µF6C1-C2+C2-T1OUT15RS-232OUTPUTS11T2INT2OUT8TTL/CMOSINPUTS10T2INT2OUT7 17VCCV+3C3*0.1µF7C40.1µFC20.1µF C10.1µF+3.3VCBYPASS1C1+345C1-C2+C2-T1OUT14RS-232OUTPUTS 16VCCV+2C3*0.1µF6C40.1µFMAX3222EV-MAX3232EV-12T1INTTL/CMOSINPUTS11T1IN13R1OUTTTL/CMOSOUTPUTS10R2OUT1ENGND16R1IN145kΩR2IN95kΩSHDN18RS-232INPUTSTTL/CMOSOUTPUTS12R1OUTR1IN135kΩRS-232INPUTS9R2OUTR2IN85kΩGND15*C3 CAN BE RETURNED TO EITHER VCC OR GROUND.NOTE: PIN NUMBERS REFER TO SO/DIP PACKAGES. MAX3222E PINOUT REFERS TO SO/DIP PACKAGES. MAX3232E PINOUT REFERS TO TSSOP/SSOP/SO/DIP/ PACKAGES SEE TABLE 2 FOR CAPACITOR SELECTION.18______________________________________________________________________________________

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_____________________________________Typical Operating Circuits (continued)

+3.3V+3.3VCBYPASS 26CBYPASS 2628VC1+CCV0.1µFV+27C128C3*C1+CCV+2725C1-0.1µF 0.1µF241MAX3237EC1-C3*MAX3241E0.1µF C2+V-410.1µF C2C2+V-330.1µF C2-0.1µF 2C4C2-0.1µF 24T1INT1T1OUT514T1INT1OUT923T2INT2T2OUT6TTL/CMOS13T2INT2OUT10RS-232INPUTSOUTPUTSLOGIC22T3INT3T3OUT7RS-23212T3INT3OUT11INPUTSOUTPUTS21R1OUTB19T4INT4T4OUT1020R2OUTB17T5INT5T5OUT1219R1OUTR1IN416R1OUTB5kΩ18R2OUTR2IN521R1OUTR1R1IN85kΩ5kΩTTL/CMOSOUTPUTS17R3OUTR3IN6LOGIC20R2OUTR2R2IN9RS-232RS-232OUTPUTSINPUTSINPUTS5kΩ5kΩ18R3OUT16R4OUTR4IN7R3R3IN115kΩ5kΩ15R5OUTR5IN8MBAUD155kΩ13EN1423ENGNDSHDNGNDSHDN22225*C3 CAN BE RETURNED TO EITHER VCC OR GROUND.______________________________________________________________________________________19

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MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E_____________________________________Typical Operating Circuits (continued)

+3.3VCBYPASSF3C1+F4E1C20.1µF D1C1-C2+C2-T1OUTF6T2OUTE6T3OUTD6RS-232OUTPUTSF2VCCV+F1C3*0.1µF C1C40.1µF C10.1µFMAX3246EV-E3T1INTTL/CMOSINPUTSE2T2IND2T3INC2R1OUTR1INA45kΩB1R2OUTR2IN5kΩA5TTL/CMOSOUTPUTSA1R3OUTR3INA65kΩRS-232INPUTSA2R4OUTR4INB65kΩA3R5OUTR5INC65kΩB3ENGNDF5SHDNB2*C3 CAN BE RETURNED TO EITHER VCC OR GROUND.20______________________________________________________________________________________

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Selector GuideOrdering Information (continued)NO. OFGUARANTEEDPARTDRIVERS/LOW-POWERPART TEMP RANGEPIN-PKGPACKAGECODERECEIVERSSHUTDOWNDATA RATE(bps)16 Thin QFN-MAX3222E2/2✔250kMAX3232ECTE 0°C to +70°CEP** (5mm xT1655-2MAX3232E2/2—250k5mm)MAX3237EMAX3232ECUE 0°C to +70°C16 TSSOP—(Normal)5/3✔250kMAX3232ECUP 0°C to +70°C20 TSSOP—MAX3237EMAX3232EEAE-40°C to +85°C16 SSOP—(MegaBaud)5/3✔1MMAX3232EEWE-40°C to +85°C16 Wide SO—MAX3241E3/5✔250kMAX3232EEPE-40°C to +85°C16 Plastic DIP—MAX3246E3/5✔250k16 Thin QFN-MAX3232EETE-40°C to +85°CEP** (5mm xT1655-25mm)___________________Chip Information

MAX3232EEUE-40°C to +85°C16 TSSOP—TRANSISTOR COUNT:

MAX3232EEUP-40°C to +85°C20 TSSOP—MAX3222E/MAX3232E: 1129MAX3237ECAI 0°C to +70°C28 SSOP—MAX3237E: 2110MAX3237EEAI-40°C to +85°C28 SSOP—MAX3241E: 1335MAX3241ECAI 0°C to +70°C28 SSOP—MAX3246E: 842MAX3241ECWI 0°C to +70°C28 Wide SO—MAX3241ECUI 0°C to +70°C28 TSSOP—PROCESS: BICMOS

MAX3241ECTJ 0°C to +70°C32 Thin QFN—MAX3241EEAI-40°C to +85°C28 SSOP—MAX3241EEWI-40°C to +85°C28 Wide SO—MAX3241EEUI-40°C to +85°C28 TSSOP—MAX3246ECBX-T 0°C to +70°C6 x 6 UCSP†—MAX3246EEBX-T-40°C to +85°C6 x 6 UCSP†—†Requires solder temperature profile described in the Absolute

Maximum Ratings section. UCSP Reliability is integrally linkedto the user’s assembly methods, circuit board material, andenvironment. Refer to the UCSP Reliability Notice in the UCSPReliability section of this datasheet for more information.

**EP = Exposed paddle.

______________________________________________________________________________________21

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EPackage Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

24L QFN THIN.EPSPACKAGE OUTLINE,12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm21-0139E12PACKAGE OUTLINE,12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm21-0139E2222______________________________________________________________________________________

元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

SPE.mm04.4POSSTPACKAGE OUTLINE, TSSOP 4.40mm BODY21-0066I11______________________________________________________________________________________23

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EPackage Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

36L,UCSP.EPSPACKAGE OUTLINE, 6x6 UCSP21-0082K1124______________________________________________________________________________________

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±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

SPE.INCHESMILLIMETERSWCINDIMMINMAXMINMAXOSA0.0930.1042.352.65A10.0040.0120.100.30B0.0140.0190.350.49C0.0090.0130.230.32EHe0.0501.27E0.2910.2997.407.60H0.3940.41910.0010.65L0.0160.0500.401.27VARIATIONS:1INCHESMILLIMETERSTOP VIEWDIMMINMAXMINMAXNMS013D0.3980.41310.1010.5016AAD0.4470.46311.3511.7518ABD0.4960.51212.6013.0020ACD0.5980.61415.2015.6024ADDD0.6970.71317.7018.1028AEACeBA10∞-8∞FRONT VIEWLSIDE VIEWPROPRIETARY INFORMATIONTITLE:PACKAGE OUTLINE, .300\" SOICAPPROVALDOCUMENT CONTROL NO.REV.21-0042B11SPE21.POSSINCHESMILLIMETERSDIMMINMAXMINMAXINCHESMILLIMETERSA0.0680.0781.731.99MINMAXMINMAXNA10.0020.0080.050.21D0.2390.2496.076.3314LB0.0100.0150.250.38D0.2390.2496.076.3316LC0.0040.0080.090.20D0.2780.27.077.3320LEHDSEE VARIATIONSD0.3170.3288.078.3324LE0.2050.2125.205.38D0.3970.40710.0710.3328Le0.0256 BSC0.65 BSCH0.3010.3117.657.90L0.0250.0370.630.950∞8∞0∞8∞NACBeA1LDNOTES:1. D&E DO NOT INCLUDE MOLD FLASH.2. MOLD FLASH OR PROTRUSIONS NOT TO EXCEED .15 MM (.006\").3. CONTROLLING DIMENSION: MILLIMETERS.PROPRIETARY INFORMATIONTITLE:4. MEETS JEDEC MO150.PACKAGE OUTLINE, SSOP, 5.3 MM5. LEADS TO BE COPLANAR WITHIN 0.10 MM.APPROVALDOCUMENT CONTROL NO.REV.21-0056C11______________________________________________________________________________________

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246E元器件交易网www.cecb2b.com

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,Up to 1Mbps, True RS-232 Transceivers

MAX3222E/MAX3232E/MAX3237E/MAX3241E†/MAX3246EPackage Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

Revision HistoryPages changed at Rev 10: 1–4, 9, 11, 21, 22, 26

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

is a registered trademark of Maxim Integrated Products, Inc.

PDIPN.EPS

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