Product Sample & Technical Tools & Support & Reference Folder Buy Documents Software Community Design MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 MAX3221 3-V to 5.5-V RS-232 Line Driver and Receiver With ±15-kV ESD Protection 1 Features 3 Description • RS-232Bus-PinESDProtectionExceeds The MAX3221 device consists of one line driver, one 1 line receiver with dedicated enable pin, and a dual ±15kVUsingHumanBodyModel(HBM) charge-pump circuit with ±15-kV ESD protection pin • MeetsorExceedstheRequirementsof to pin (serial-port connection pins, including GND). TIA/EIA-232-FandITUV.28Standards The device meets the requirements of TIA/EIA-232-F • OperatesWith3-Vto5.5-VV Supply and provides the electrical interface between an CC asynchronous communication controller and the • Operatesupto250kbps serial-port connector. The charge pump and four • OneDriverandOneReceiver small external capacitors allow operation from a • LowStandbyCurrent:1 μATypical single 3-V to 5.5-V supply. These devices operate at • ExternalCapacitors:4 ×0.1 μF data signaling rates up to 250 kbps and a maximum of30-V/μsdriveroutputslewrate. • Accepts5-VLogicInputWith3.3-VSupply • AlternativeHigh-SpeedPin-Compatible Flexible control options for power management are available when the serial port is inactive. The Device(1Mbps) automatic power-down feature functions when – SNx5C3221 FORCEON is low and FORCEOFF is high. During • AutomaticPower-DownFeatureAutomatically this mode of operation, if the device does not sense a DisablesDriversforPowerSavings valid RS-232 signal on the receiver input, the driver output 2 Applications is disabled and the supply current is reduced to 1 μA. The INVALID output notifies the user if an RS-232 • Battery-Powered,Hand-Held,andPortable signalispresentatthereceiverinput. Equipment • Notebooks,Subnotebooks,andLaptops DeviceInformation(1) • DigitalCameras PARTNUMBER PACKAGE BODYSIZE(NOM) • MobilePhonesandWirelessDevices MAX3221xDB SSOP(32) 6.20mm×5.30mm MAX3221xPW TSSOP(32) 5.00mm×4.40mm (1) For all available packages, see the orderable addendum at theendofthedatasheet. SimplifiedDiagram 3.3V,5V POWER EN[RX] FORCEON APD FORCEOFF 1 1 DOUT DIN TX RS232 1 1 RIN ROUT RX RS232 INVALID STATUS 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com Table of Contents 1 Features.................................................................. 1 8 DetailedDescription............................................ 11 2 Applications........................................................... 1 8.1 Overview.................................................................11 3 Description............................................................. 1 8.2 FunctionalBlockDiagram.......................................11 4 RevisionHistory..................................................... 2 8.3 FeatureDescription.................................................11 8.4 DeviceFunctionalModes........................................12 5 PinConfigurationandFunctions......................... 3 9 ApplicationandImplementation........................ 13 6 Specifications......................................................... 4 9.1 ApplicationInformation............................................13 6.1 AbsoluteMaximumRatings......................................4 9.2 TypicalApplication..................................................13 6.2 ESDRatings..............................................................4 10 PowerSupplyRecommendations..................... 14 6.3 RecommendedOperatingConditions.......................4 6.4 ThermalInformation..................................................5 11 Layout................................................................... 15 6.5 ElectricalCharacteristics–Power............................5 11.1 LayoutGuidelines.................................................15 6.6 ElectricalCharacteristics–Driver.............................5 11.2 LayoutExample....................................................15 6.7 ElectricalCharacteristics–Receiver........................6 12 DeviceandDocumentationSupport................. 16 6.8 ElectricalCharacteristics–Status ...........................6 12.1 CommunityResources..........................................16 6.9 SwitchingCharacteristics–Driver............................6 12.2 Trademarks...........................................................16 6.10 SwitchingCharacteristics–Receiver.....................7 12.3 ElectrostaticDischargeCaution............................16 6.11 SwitchingCharacteristics–Status..........................7 12.4 Glossary................................................................16 6.12 TypicalCharacteristics............................................7 13 Mechanical,Packaging,andOrderable 7 ParameterMeasurementInformation..................8 Information........................................................... 16 4 Revision History NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion. ChangesfromRevisionN(January2014)toRevisionO Page • AddedPinConfigurationandFunctionssection,ESDRatingstable,FeatureDescriptionsection,DeviceFunctional Modes,ApplicationandImplementationsection,PowerSupplyRecommendationssection,Layoutsection,Device andDocumentationSupportsection,andMechanical,Packaging,andOrderableInformationsection .............................. 1 ChangesfromRevisionM(March2004)toRevisionN Page • UpdateddocumenttonewTIdatasheetformat-nospecificationchanges......................................................................... 1 • DeletedOrderingInformationtable........................................................................................................................................ 1 2 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 5 Pin Configuration and Functions DBorPWPackage 16-PinSSOPorTSSOP TopView EN 1 16 FORCEOFF C1+ 2 15 VCC V+ 3 14 GND C1− 4 13 DOUT C2+ 5 12 FORCEON C2− 6 11 DIN V− 7 10 INVALID RIN 8 9 ROUT PinFunctions PIN I/O DESCRIPTION NAME NO. C1+ 2 — Positiveterminalsofthevoltage-doublercharge-pumpcapacitors C2+ 5 C1– 4 — Negativeterminalsofthevoltage-doublercharge-pumpcapacitors C2– 6 DIN 11 I Driverinput DOUT 13 O RS-232driveroutput EN 1 I LowinputenablesreceiverROUToutput.HighinputsetsROUTtohighimpedance. FORCEOFF 16 I Automaticpower-downcontrolinput FORCEON 12 I Automaticpower-downcontrolinput GND 14 — Ground INVALID 10 O Invalidoutputpin.OutputlowwhenallRINinputsareunpowered. RIN 8 I RS-232receiverinput ROUT 9 O Receiveroutput V 15 — 3-Vto5.5-Vsupplyvoltage CC V+ 3 O 5.5-Vsupplygeneratedbythechargepump V– 7 O –5.5-Vsupplygeneratedbythechargepump Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings overoperatingfree-airtemperaturerange(unlessotherwisenoted)(1) MIN MAX UNIT V toGND –0.3 6 CC V+toGND –0.3 7 V V–toGND 0.3 –7 V++|V–|(2) 13 DIN,EN,FORCEOFF,andFORCEONtoGND –0.3 6 V Inputvoltage V I RINtoGND ±25 DOUTtoGND ±13.2 V Outputvoltage V O ROUTtoGND –0.3 V +0.3 CC T Junctiontemperature(3) 150 J °C T Storagetemperaturerange –65 150 stg (1) StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratings only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommendedOperating Conditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability. (2) V+andV–canhavemaximummagnitudesof7V,buttheirabsolutedifferencecannotexceed13V. (3) MaximumpowerdissipationisafunctionofT(max),R ,andT .Themaximumallowablepowerdissipationatanyallowableambient J θJA A temperatureisP =(T(max)–T )/R .OperatingattheabsolutemaximumT of150°Ccanaffectreliability. D J A θJA J 6.2 ESD Ratings VALUE UNIT Humanbodymodel(HBM),per Allpinsexcept8,13 ±3000 ANSI/ESDA/JEDECJS-001(1) Pins8,13 ±15,000 V Electrostaticdischarge V (ESD) Charged-devicemodel(CDM),perJEDECspecificationJESD22- C101(2) ±1500 (1) JEDECdocumentJEP155statesthat500-VHBMallowssafemanufacturingwithastandardESDcontrolprocess. (2) JEDECdocumentJEP157statesthat250-VCDMallowssafemanufacturingwithastandardESDcontrolprocess. 6.3 Recommended Operating Conditions (seeFigure8)(1) MIN NOM MAX UNIT V =3.3V 3 3.3 3.6 CC Supplyvoltage V V =5V 4.5 5 5.5 CC DIN,FORCEOFF, VCC=3.3V 2 V Driverhigh-levelinputvoltage V IH FORCEON,EN V =5V 2.4 CC DIN,FORCEOFF, V Driverlow-levelinputvoltage 0.8 V IL FORCEON,EN DIN,FORCEOFF, Driverinputvoltage 0 5.5 V FORCEON,EN V I Receiverinputvoltage –25 25 MAX3221C 0 70 T Operatingfree-airtemperature °C A MAX3221I –40 85 (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC 4 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 6.4 Thermal Information MAX3221 THERMALMETRIC(1) DB(SSOP) PW(TSSOP) UNIT 16PINS 16PINS R Junction-to-ambientthermalresistance 98.0 106.4 °C/W θJA R Junction-to-case(top)thermalresistance 48.3 41.1 °C/W θJC(top) R Junction-to-boardthermalresistance 48.7 51.4 °C/W θJB ψ Junction-to-topcharacterizationparameter 10.1 3.9 °C/W JT ψ Junction-to-boardcharacterizationparameter 48.1 50.9 °C/W JB (1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheSemiconductorandICPackageThermalMetricsapplication report,SPRA953. 6.5 Electrical Characteristics – Power overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER TESTCONDITIONS MIN TYP(2) MAX UNIT Inputleakage II current FORCEOFF,FORCEON,EN ±0.01 ±1 µA Automaticpower-down Noload,FORCEOFFand 0.3 1 mA disabled FORCEONatVCC Poweredoff Noload, Noload,FORCEOFFatGND 1 10 ICC Supplycurrent VCC=3.3Vto5V Noload,FORCEOFFatVCC, µA Automaticpower-downenabled FORCEONatGND, 1 10 AllRINareopenorgrounded (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A 6.6 Electrical Characteristics – Driver overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER TESTCONDITIONS MIN TYP(2) MAX UNIT V High-leveloutputvoltage D atR =3kΩtoGND, D =GND 5 5.4 V OH OUT L IN V Low-leveloutputvoltage D atR =3kΩtoGND, D =V –5 –5.4 V OL OUT L IN CC I High-levelinputcurrent V =V ±0.01 ±1 μA IH I CC I Low-levelinputcurrent V atGND ±0.01 ±1 μA IL I V =3.6V V =0V ±35 ±60 I Short-circuitoutputcurrent(3) CC O mA OS V =5.5V V =0V ±35 ±60 CC O r Outputresistance V ,V+,andV–=0V V =±2V 300 10M Ω O CC O V =±12V, O ±25 V =3Vto3.6V CC I Outputleakagecurrent FORCEOFF=GND µA off V =±12V, O ±25 V =4.5Vto5.5V CC (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5 CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A (3) Short-circuitdurationsshouldbecontrolledtopreventexceedingthedeviceabsolutepowerdissipationratings,andnotmorethanone outputshouldbeshortedatatime. Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com 6.7 Electrical Characteristics – Receiver overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER TESTCONDITIONS MIN TYP(2) MAX UNIT V High-leveloutputvoltage I =–1mA V –0.6 V –0.1 V OH OH CC CC V Low-leveloutputvoltage I =1.6mA 0.4 V OL OL V =3.3V 1.5 2.4 CC V Positive-goinginputthresholdvoltage V IT+ V =5V 1.8 2.4 CC V =3.3V 0.6 1.1 CC V Negative-goinginputthresholdvoltage V IT– V =5V 0.8 1.4 CC V Inputhysteresis(V –V ) 0.5 V hys IT+ IT– I Outputleakagecurrent FORCEOFF=0V ±0.05 ±10 µA off r Inputresistance V =±3Vto±25V 3 5 7 kΩ i I (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A 6.8 Electrical Characteristics – Status overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER TESTCONDITIONS MIN TYP(2) MAX UNIT ReceiverinputthresholdforINVALID FORCEON=GND, V 2.7 V T+(valid) high-leveloutputvoltage FORCEOFF=V CC ReceiverinputthresholdforINVALID FORCEON=GND, V –2.7 V T–(valid) high-leveloutputvoltage FORCEOFF=V CC ReceiverinputthresholdforINVALIDlow- FORCEON=GND, V –0.3 0.3 V T(invalid) leveloutputvoltage FORCEOFF=V CC I =–1mA, OH V INVALIDhigh-leveloutputvoltage FORCEON=GND, V –0.6 V OH CC FORCEOFF=V CC I =–1mA, OH V INVALIDlow-leveloutputvoltage FORCEON=GND, 0.4 V OL FORCEOFF=V CC (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A 6.9 Switching Characteristics – Driver overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER TESTCONDITIONS MIN TYP(2) MAX UNIT C =1000pF,R =3kΩ, Maximumdatarate L L 150 250 kbps seeFigure3 t Pulseskew(3) CL=150to2500pF,RL=3kΩto7kΩ, 100 ns sk(p) seeFigure4 SR(tr) Slewrate,transitionregion VCC=3.3V, CL=150to1000pF 6 30 V/μs (seeFigure3) RL=3kΩto7kΩ CL=150to2500pF 4 30 (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A (3) Pulseskewisdefinedas|t −t |ofeachchannelofthesamedevice. PLH PHL 6 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 6.10 Switching Characteristics – Receiver overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER TESTCONDITIONS MIN TYP(2) MAX UNIT C =150pF, t Propagationdelaytime,low-tohigh-leveloutput L 150 ns PLH seeFigure5 C =150pF, t Propagationdelaytime,high-tolow-leveloutput L 150 ns PHL seeFigure5 C =150pF,R =3kΩ, t Outputenabletime L L 200 ns en seeFigure6 C =150pF,R =3kΩ, t Outputdisabletime L L 200 ns dis seeFigure6 t Pulseskew(3) SeeFigure5 50 ns sk(p) (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A (3) Pulseskewisdefinedas|t −t |ofeachchannelofthesamedevice. PLH PHL 6.11 Switching Characteristics – Status overrecommendedrangesofsupplyvoltageandoperatingfree-airtemperature(unlessotherwisenoted)(1) PARAMETER MIN TYP(2) MAX UNIT t Propagationdelaytime,low-tohigh-leveloutput 1 µs valid t Propagationdelaytime,high-tolow-leveloutput 30 µs invalid t Supplyenabletime 100 µs en (1) TestconditionsareC1–C4=0.1μFatV =3.3V±0.3V;C1=0.047μF,C2–C4=0.33μFatV =5V±0.5V. CC CC (2) AlltypicalvaluesareatV =3.3VorV =5V,andT =25°C. CC CC A 6.12 Typical Characteristics V =3.3V CC 6 0 VOH VOL 5 ±1 e (V) 4 e (V) ±2 g g a a olt3 olt±3 V V T T U U O2 O±4 D D 1 ±5 0 ±6 0 5 10 15 20 25 0 5 10 15 20 25 DOUT Current (mA) DOUT Current (mA) C001 C001 Figure1.DOUTV vsLoadCurrent Figure2.DOUTV vsLoadCurrent OH OL Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com 7 Parameter Measurement Information 3 V Input RS-232 0 V Output Generator (see Note B) 50Ω CL tTHL tTLH RL (see NoteA) VOH 3 V 3 V 3 V Output FORCEOFF −3 V −3 V VOL 6V SR(tr) = TESTCIRCUIT t ort VOLTAGEWAVEFORMS THL TLH A. C includesprobeandjigcapacitance. L B. The pulse generator has the following characteristics: PRR = 250 kbps, Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, O r t ≤10ns. f Figure3. DriverSlewRate 3 V RS-232 Input 1.5V 1.5 V Output 0 V Generator 50Ω (see Note B) CL tPHL tPLH RL (see NoteA) VOH 3 V Output 50% 50% FORCEOFF VOL TESTCIRCUIT VOLTAGEWAVEFORMS A. C includesprobeandjigcapacitance. L B. The pulse generator has the following characteristics: PRR = 250 kbps, Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, O r t ≤10ns. f Figure4. DriverPulseSkew 3 V or 0 V 3 V FORCEON Input 1.5 V 1.5 V −3 V Output Generator 50Ω tPHL tPLH (see Note B) CL (see NoteA) 3 V VOH FORCEOFF Output 50% 50% VOL TESTCIRCUIT VOLTAGEWAVEFORMS A. C includesprobeandjigcapacitance. L B. Thepulsegeneratorhasthefollowingcharacteristics:Z =50Ω,50%dutycycle,t ≤10ns,t ≤10ns. O r f Figure5. ReceiverPropagationDelayTimes 8 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 Parameter Measurement Information (continued) 3 V Input 1.5 V 1.5 V VCC GND 3 V or 0 V 0 V S1 FORCEON tPHZ tPZH RL (S1 at GND) (S1atGND) 3 V or 0 V Output VOH Output 50% CL 0.3 V (see NoteA) EN tPLZ tPZL Generator (S1 at VCC) (S1 at VCC) 50Ω (see Note B) 0.3 V Output 50% VOL TEST CIRCUIT VOLTAGE WAVEFORMS A. C includesprobeandjigcapacitance. L B. Thepulsegeneratorhasthefollowingcharacteristics:Z =50Ω,50%dutycycle,t ≤10ns,t ≤10ns. O r f C. t andt arethesameast . PLZ PHZ dis D. t andt arethesameast . PZL PZH en Figure6. ReceiverEnableandDisableTimes Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com Parameter Measurement Information (continued) 3 V 2.7 V 2.7 V Receiver 0 V Input 0 V ROUT −2.7 V −2.7 V Generator −3 V 50Ω (see Note B) tinvalid tvalid VCC 50% VCC 50% VCC INVALID 0 V Output Auto- INVALID ten powerdown CL= 30 pF V+ ≈V+ (see NoteA) 0.3 V FORCEOFF Supply VCC Voltages 0 V DIN DOUT 0.3 V FORCEON V− ≈V− TESTCIRCUIT VOLTAGEWAVEFORMS ValidRS-232Level,INVALIDHigh 2.7 V Indeterminate 0.3 V IfSignalRemainsWithinThisRegion 0 V For More Than 30µs,INVALIDIs Low† −0.3 V Indeterminate −2.7 V ValidRS-232Level,INVALIDHigh †Auto-powerdowndisables drivers and reduces supply currentto1µA. Figure7. INVALID PropagationDelayTimesandDriverEnablingTime 10 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 8 Detailed Description 8.1 Overview The MAX3221 device is a one-driver and one-receiver RS-232 interface device. All RS-232 inputs and outputs are protected to ±15 kV using the Human Body Model. The charge pump requires only four small 0.1-μF capacitors for operation from a 3.3-V supply. The MAX3221 is capable of running at data rates up to 250 kbps, whilemaintainingRS-232-compliantoutputlevels. Automatic power-down can be disabled when FORCEON and FORCEOFF are high. With automatic power-down plus enabled, the device activates automatically when a valid signal is applied to any receiver input. The device canautomaticallypowerdownthedrivertosavepowerwhentheRINinputisunpowered. INVALID is high (valid data) if receiver input voltage is greater than 2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less than 30 μs. INVALID is low (invalid data) if receiver input voltages are between –0.3Vand0.3Vformorethan30 μs.RefertoFigure7forreceiverinputlevels. 8.2 Functional Block Diagram 3.3V, 5V POWER EN [RX] FORCEON APD FORCEOFF 1 1 DOUT DIN TX RS232 1 1 RIN ROUT RX RS232 INVALID STATUS 8.3 Feature Description 8.3.1 Power The power block increases, inverts, and regulates voltage at V+ and V- pins using a charge pump that requires four external capacitors. Auto-power-down feature for driver is controlled by FORCEON and FORCEOFF inputs. ReceiveriscontrolledbyENinput.SeeTable1andTable2 WhenMAX3221isunpowered,itcanbesafelyconnectedtoanactiveremoteRS232device. 8.3.2 RS232Driver OnedriverinterfacesstandardlogicleveltoRS232levels.DINinputmustbevalidhighorlow. 8.3.3 RS232Receiver OnereceiverinterfacesRS232levelstostandardlogiclevels.AnopeninputwillresultinahighoutputonROUT. RIN input includes an internal standard RS232 load. A logic high input on the EN pin will shutdown the receiver output. 8.3.4 RS232Status The INVALID output goes low when RIN input is unpowered for more than 30 μs. The INVALID output goes high when receiver has a valid input. The INVALID output is active when V is powered irregardless of FORCEON cc andFORCEOFF inputs(seeTable3). Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com 8.4 Device Functional Modes Table 1, Table 2, and Table 3 show the behavior of the driver, receiver, and INVALID(activelow) features under allpossiblerelevantcombinationsofinputs. Table1. Driver(1) INPUTS OUTPUT VALIDRINRS-232 DRIVERSTATUS DIN FORCEON FORCEOFF DOUT LEVEL X X L X Z Poweredoff L H H X H Normaloperationwith H H H X L automaticpowerdowndisabled L L H Yes H Normaloperationwith H L H Yes L automaticpowerdownenabled L L H No Z Poweredoffby H L H No Z automaticpowerdownfeature (1) H=highlevel,L=lowlevel,X=irrelevant,Z=highimpedance,Yes=|RIN|>2.7V,No=|RIN|<0.3V Table2.Receiver(1) INPUTS OUTPUT VALIDRINRS-232 RECEIVERSTATUS RIN EN ROUT LEVEL X H X Z Outputoff L L X H H L X L Normaloperation Open L No H (1) H=highlevel,L=lowlevel,X=irrelevant,Z=highimpedance(off),Open=inputdisconnectedorconnecteddriveroff Table3.INVALID(1) INPUTS OUTPUT RIN FORCEON FORCEOFF EN INVALID L X X X H H X X X H Open X X X L (1) H=highlevel,L=lowlevel,X=irrelevant,Z=highimpedance(off),Open=inputdisconnectedorconnecteddriveroff 11 13 DIN DOUT 16 FORCEOFF 10 Auto-powerdown INVALID 12 FORCEON 9 8 ROUT RIN 1 EN LogicDiagram 12 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validateandtesttheirdesignimplementationtoconfirmsystemfunctionality. 9.1 Application Information The MAX3221 line driver and receiver is a specialized device for 3-V to 5.5-V RS-232 communication applications. This application is a generic implementation of this device with all required external components. Forproperoperation,addcapacitorsasshowninFigure8. 9.2 Typical Application ROUT and DIN connect to UART or general purpose logic lines. FORCEON and FORCEOFF may be connected general purpose logic lines or tied to ground or V . INVALID may be connected to a general purpose logic line CC or left unconnected. RIN and DOUT lines connect to a RS232 connector or cable. DIN, FORCEON, and FORCEOFF inputsmustnotbeleftunconnected. 1 16 EN FORCEOFF 2 C1+ VCC 15 + 3 − CBYPASS= 0.1µF + + V+ Auto- 14 C1 C3† powerdown GND − − 4 C1− 13 5 DOUT C2+ + 12 C2 FORCEON − 6 C2− 11 DIN 7 V− − 10 C4 INVALID + 8 9 RIN ROUT 5 kΩ †C3 can be connected to VCCor GND. NOTES: A. Resistorvaluesshownarenominal. B. Nonpolarizedceramic capacitors are acceptable. If polarized tantalum or electrolytic capacitors are used, they should be connectedasshown. VCCvsCAPACITORVALUES VCC C1 C2,C3,andC4 3.3 V±0.3 V 0.1µF 0.1µF 5 V±0.5 V 0.047µF 0.33µF 3 V to 5.5 V 0.1µF 0.47µF Figure8. TypicalOperatingCircuitandCapacitorValues Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com Typical Application (continued) 9.2.1 DesignRequirements • RecommendedV is3.3Vor5V. CC – 3Vto5.5Visalsopossible • Maximumrecommendedbitrateis250kbps. • UsecapacitorsasshowninFigure8. 9.2.2 DetailedDesignProcedure • DIN, FORCEOFF andFORCEONinputsmustbeconnectedtovalidloworhighlogiclevels. • SelectcapacitorvaluesbasedonVCClevelforbestperformance. 9.2.3 ApplicationCurve CurvesforV of3.3Vand250kbpsalternativebitdatastream. CC 6 5 4 3 2 V) 1 ge ( 0 a olt ±1 V ±2 ±3 ±4 DIN ±5 DOUT to RIN ±6 ROUT 0 1 2 3 4 5 6 7 8 9 10 Time ((cid:29)s) C001 Figure9.250-kbpsDrivertoReceiverLoopbackTimingWaveform, V =3.3V CC 10 Power Supply Recommendations TIrecommendsa0.1-μFcapacitortofilternoiseonthepowersupplypin.Foradditionalfiltercapability,a 0.01-μF capacitor may be added in parallel as well. Power supply input voltage is recommended to be any valid levelinRecommendedOperatingConditions. 14 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

MAX3221 www.ti.com SLLS348O–JUNE1999–REVISEDJUNE2015 11 Layout 11.1 Layout Guidelines Keep the external capacitor traces short. This is more important on C1 and C2 nodes that have the fastest rise andfalltimes. 11.2 Layout Example 1 EN FORCEOFF 16 Ground C3 2 C1+ VCC 15 VCC (cid:19)(cid:17)(cid:20)PF C1 3 V+ GND 14 Ground 4 C1- DOUT 13 5 C2+ FORCEON 12 C2 6 C2- DIN 11 Ground 7 V- INVALID 10 C4 8 RIN ROUT 9 Figure10. LayoutDiagram Copyright©1999–2015,TexasInstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:MAX3221

MAX3221 SLLS348O–JUNE1999–REVISEDJUNE2015 www.ti.com 12 Device and Documentation Support 12.1 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TIE2E™OnlineCommunity TI'sEngineer-to-Engineer(E2E)Community.Createdtofostercollaboration amongengineers.Ate2e.ti.com,youcanaskquestions,shareknowledge,exploreideasandhelp solveproblemswithfellowengineers. DesignSupport TI'sDesignSupport QuicklyfindhelpfulE2Eforumsalongwithdesignsupporttoolsand contactinformationfortechnicalsupport. 12.2 Trademarks E2EisatrademarkofTexasInstruments. Allothertrademarksarethepropertyoftheirrespectiveowners. 12.3 Electrostatic Discharge Caution Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. 12.4 Glossary SLYZ022—TIGlossary. Thisglossarylistsandexplainsterms,acronyms,anddefinitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical packaging and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of thisdocument.Forbrowserbasedversionsofthisdatasheet,refertothelefthandnavigation. 16 SubmitDocumentationFeedback Copyright©1999–2015,TexasInstrumentsIncorporated ProductFolderLinks:MAX3221

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) MAX3221CDB ACTIVE SSOP DB 16 80 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CDBE4 ACTIVE SSOP DB 16 80 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CDBR ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CDBRG4 ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CPW ACTIVE TSSOP PW 16 90 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CPWE4 ACTIVE TSSOP PW 16 90 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CPWR ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CPWRE4 ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221CPWRG4 ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 MA3221C & no Sb/Br) MAX3221IDB ACTIVE SSOP DB 16 80 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IDBE4 ACTIVE SSOP DB 16 80 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IDBG4 ACTIVE SSOP DB 16 80 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IDBR ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IDBRE4 ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IDBRG4 ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IPW ACTIVE TSSOP PW 16 90 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IPWG4 ACTIVE TSSOP PW 16 90 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) MAX3221IPWR ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU | SN Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) MAX3221IPWRG4 ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 MB3221I & no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF MAX3221 : Addendum-Page 2

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 •Enhanced Product: MAX3221-EP NOTE: Qualified Version Definitions: •Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 3

PACKAGE MATERIALS INFORMATION www.ti.com 17-Apr-2020 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) MAX3221CPWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 MAX3221IPWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 MAX3221IPWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 MAX3221IPWRG4 TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 17-Apr-2020 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) MAX3221CPWR TSSOP PW 16 2000 367.0 367.0 35.0 MAX3221IPWR TSSOP PW 16 2000 367.0 367.0 35.0 MAX3221IPWR TSSOP PW 16 2000 364.0 364.0 27.0 MAX3221IPWRG4 TSSOP PW 16 2000 367.0 367.0 35.0 PackMaterials-Page2

PACKAGE OUTLINE PW0016A TSSOP - 1.2 mm max height SCALE 2.500 SMALL OUTLINE PACKAGE SEATING PLANE C 6.6 TYP 6.2 A 0.1 C PIN 1 INDEX AREA 14X 0.65 16 1 2X 5.1 4.55 4.9 NOTE 3 8 9 0.30 B 4.5 16X 0.19 1.2 MAX 4.3 0.1 C A B NOTE 4 (0.15) TYP SEE DETAIL A 0.25 GAGE PLANE 0.15 0.05 0.75 0.50 0 -8 DETA 20AIL A TYPICAL 4220204/A 02/2017 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. 4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side. 5. Reference JEDEC registration MO-153. www.ti.com

EXAMPLE BOARD LAYOUT PW0016A TSSOP - 1.2 mm max height SMALL OUTLINE PACKAGE 16X (1.5) SYMM (R0.05) TYP 1 16X (0.45) 16 SYMM 14X (0.65) 8 9 (5.8) LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE: 10X SOLDER MASK METAL UNDER SOLDER MASK OPENING METAL SOLDER MASK OPENING EXPOSED METAL EXPOSED METAL 0.05 MAX 0.05 MIN ALL AROUND ALL AROUND NON-SOLDER MASK SOLDER MASK DEFINED DEFINED (PREFERRED) SOLDE15.000R MASK DETAILS 4220204/A 02/2017 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN PW0016A TSSOP - 1.2 mm max height SMALL OUTLINE PACKAGE 16X (1.5) SYMM (R0.05) TYP 1 16X (0.45) 16 SYMM 14X (0.65) 8 9 (5.8) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE: 10X 4220204/A 02/2017 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com

MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,65 0,15 M 0,22 28 15 0,25 0,09 5,60 8,20 5,00 7,40 Gage Plane 1 14 0,25 A 0°–(cid:1)8° 0,95 0,55 Seating Plane 2,00 MAX 0,05 MIN 0,10 PINS ** 14 16 20 24 28 30 38 DIM A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 4040065/E 12/01 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. D. Falls within JEDEC MO-150 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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