DS9638 www.ti.com SNLS389D–MAY1998–REVISEDAPRIL2013 DS9638 RS-422 Dual High Speed Differential Line Driver CheckforSamples:DS9638 FEATURES DESCRIPTION 1 • Single5VSupply The DS9638 is a Schottky, TTL compatible, dual 2 differential line driver designed specifically to meet • SchottkyTechnology the EIA Standard RS-422 specifications. It is • TTLandCMOSCompatibleInputs designed to provide unipolar differential drive to • OutputShortCircuitProtection twisted pair or parallel wire transmission lines. The inputs are TTL compatible. The outputs are similar to • InputClampDiodes totem pole TTL outputs, with active pull-up and pull- • ComplementaryOutputs down. The device features a short circuit protected • MinimumOutputSkew(<1.0nstypical) active pull-up with low output impedance and is specified to drive 50Ω transmission lines at high • 50mAOutputDriveCapabilityfor50Ω speed.Themini-DIPprovideshighpackagedensity. TransmissionLines • MeetsEIARS-422Specifications • PropagationDelayofLessThan10ns • “Glitchless”DifferentialOutput • DelayTimeStablewithV andTemperature CC Variations(<2.0nstypical)(SeeFigure4) • ExtendedTemperatureRange Connection Diagram Figure1. 8-LeadPDIPorCDIPorSOIC(TopView) SeePorNAB0008AorDPackage 1 Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. Alltrademarksarethepropertyoftheirrespectiveowners. 2 PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©1998–2013,TexasInstrumentsIncorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarilyincludetestingofallparameters.

DS9638 SNLS389D–MAY1998–REVISEDAPRIL2013 www.ti.com Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. Absolute Maximum Ratings(1)(2) StorageTemperatureRange CeramicDIP −65°Cto+175°C MoldedDIPandSO-8 −65°Cto+150°C LeadTemperature CDIP(Soldering,60sec.) 300°C PDIP(Soldering,10sec.) 265°C MaximumPowerDissipationat25°C(3) CDIPPackage 1300mW PDIPPackage 930mW SOICPackage 810mW V LeadPotentialtoGround −0.5Vto7V CC InputVoltage −0.5Vto+7V (1) “AbsoluteMaximumRatings”arethosevaluesbeyondwhichthesafetyofthedevicecannotbeverified.Theyarenotmeanttoimply thatthedevicesshouldbeoperatedattheselimits.Thetablesof“ElectricalCharacteristicsprovideconditionsforactualdevice operation. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexasInstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) DerateCDIPpackage8.7mW/°Cabove25°C;deratePDIPpackage7.5mW/°Cabove25°C;derateSOICpackage6.5mW°Cabove 25°C. Recommended Operating Conditions DS9638M DS9638C Min Typ Max Min Typ Max Units SupplyVoltage(V ) 4.5 5.0 5.5 4.75 5.0 5.25 V CC OutputCurrentHIGH(I ) −50 −50 mA OH OutputCurrentLOW(I ) 50 40 50 mA OL OperatingTemperature(T ) −55 25 125 0 25 70 °C A 2 SubmitDocumentationFeedback Copyright©1998–2013,TexasInstrumentsIncorporated ProductFolderLinks:DS9638

DS9638 www.ti.com SNLS389D–MAY1998–REVISEDAPRIL2013 Electrical Characteristics(1)(2) Overrecommendedoperatingtemperatureandsupplyvoltageranges,unlessotherwisespecified Symbol Parameter Conditions Min Typ Max Units V InputVoltageHIGH 2.0 V IH V InputVoltageLOW 0°Cto+70°C 0.8 V IL −55°Cto+125°C 0.5 V InputClampVoltage V =Min,I =−18mA −1.0 −1.2 V IC CC I V OutputVoltageHIGH V =Min, I =−10mA 2.5 3.5 OH CC OH V =V , V IH IHMin I =−40mA 2.0 V =V OH IL ILMax V OutputVoltageLOW V =Min,V =V , OL CC IH IHMin 0.5 V V =V ,I =40mA IL ILMax OL I InputCurrentatMaximumInput V =Max,V =5.5V I CC IMax 50 μA Voltage I InputCurrentHIGH V =Max,V =2.7V 25 μA IH CC IH I InputCurrentLOW V =Max,V =0.5V −200 μA IL CC IL I OutputShortCircuitCurrent V =Max,V =0V(2) −50 −150 mA OS CC O V ,V TerminatedOutputVoltage SeeFigure2 2.0 V T T V –V OutputBalance 0.4 V T T V ,V OutputOffsetVoltage 3.0 V OS OS V –V OutputOffsetBalance 0.4 V OS OS I OutputLeakageCurrent T =25°C X A 100 μA −0.25V<V <5.5V X I SupplyCurrent(BothDrivers) V =5.5V, 45 65 mA CC CC Allinputat0V, NoLoad (1) Unlessotherwisespecifiedmin/maxlimitsapplyacrossthe−55°Cto+125°CtemperaturerangefortheDS9638Mandacrossthe0°Cto +70°CrangefortheDS9638C.AlltypicalsaregivenforV =5VandT =25°C. CC A (2) Allcurrentsintothedevicepinsarepositive;allcurrentsoutofthedevicepinsarenegative.Allvoltagesarereferencedtoground unlessotherwisespecified. Switching Characteristics V =5.0V,T =25°C. CC A Symbol Parameter Conditions Min Typ Max Units t PropagationDelay C =15pF 10 20 ns PHL L R =100Ω,SeeFigure3 t L 10 20 ns PLH t FallTime,90%–10% 10 20 ns f t RiseTime,10%–90% 10 20 ns r t –t SkewBetweenOutputs PO PO 1.0 ns A/AandB/B Copyright©1998–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:DS9638

DS9638 SNLS389D–MAY1998–REVISEDAPRIL2013 www.ti.com Figure2. EquivalentCircuit DC Test Circuit Figure3. TerminatedOutputVoltageandOutputBalance (1) Thepulsegeneratorhasthefollowingcharacteristics: C includesprobeandjigcapacitance. L PRR=500kHz,t =100ns, W t ≤5.0ns,Z =50Ω. r O Figure4. ACTestCircuitandVoltageWaveform 4 SubmitDocumentationFeedback Copyright©1998–2013,TexasInstrumentsIncorporated ProductFolderLinks:DS9638

DS9638 www.ti.com SNLS389D–MAY1998–REVISEDAPRIL2013 Typical Characteristics Figure5.TypicalDelayCharacteristics(a) Figure6.TypicalDelayCharacteristics(b) Copyright©1998–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:DS9638

DS9638 SNLS389D–MAY1998–REVISEDAPRIL2013 www.ti.com REVISION HISTORY ChangesfromRevisionC(April2013)toRevisionD Page • ChangedlayoutofNationalDataSheettoTIformat............................................................................................................ 5 6 SubmitDocumentationFeedback Copyright©1998–2013,TexasInstrumentsIncorporated ProductFolderLinks:DS9638

PACKAGE OPTION ADDENDUM www.ti.com 25-Aug-2017 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) DS9638CM/NOPB LIFEBUY SOIC D 8 95 Green (RoHS CU SN Level-1-260C-UNLIM 0 to 70 DS963 & no Sb/Br) 8CM DS9638CMX/NOPB LIFEBUY SOIC D 8 2500 Green (RoHS CU SN Level-1-260C-UNLIM 0 to 70 DS963 & no Sb/Br) 8CM (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. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 25-Aug-2017 Addendum-Page 2

None

IMPORTANTNOTICE TexasInstrumentsIncorporated(TI)reservestherighttomakecorrections,enhancements,improvementsandotherchangestoits semiconductorproductsandservicesperJESD46,latestissue,andtodiscontinueanyproductorserviceperJESD48,latestissue.Buyers shouldobtainthelatestrelevantinformationbeforeplacingordersandshouldverifythatsuchinformationiscurrentandcomplete. TI’spublishedtermsofsaleforsemiconductorproducts(http://www.ti.com/sc/docs/stdterms.htm)applytothesaleofpackagedintegrated circuitproductsthatTIhasqualifiedandreleasedtomarket.AdditionaltermsmayapplytotheuseorsaleofothertypesofTIproductsand services. ReproductionofsignificantportionsofTIinformationinTIdatasheetsispermissibleonlyifreproductioniswithoutalterationandis accompaniedbyallassociatedwarranties,conditions,limitations,andnotices.TIisnotresponsibleorliableforsuchreproduced documentation.Informationofthirdpartiesmaybesubjecttoadditionalrestrictions.ResaleofTIproductsorserviceswithstatements differentfromorbeyondtheparametersstatedbyTIforthatproductorservicevoidsallexpressandanyimpliedwarrantiesforthe associatedTIproductorserviceandisanunfairanddeceptivebusinesspractice.TIisnotresponsibleorliableforanysuchstatements. BuyersandotherswhoaredevelopingsystemsthatincorporateTIproducts(collectively,“Designers”)understandandagreethatDesigners remainresponsibleforusingtheirindependentanalysis,evaluationandjudgmentindesigningtheirapplicationsandthatDesignershave fullandexclusiveresponsibilitytoassurethesafetyofDesigners'applicationsandcomplianceoftheirapplications(andofallTIproducts usedinorforDesigners’applications)withallapplicableregulations,lawsandotherapplicablerequirements.Designerrepresentsthat,with respecttotheirapplications,Designerhasallthenecessaryexpertisetocreateandimplementsafeguardsthat(1)anticipatedangerous consequencesoffailures,(2)monitorfailuresandtheirconsequences,and(3)lessenthelikelihoodoffailuresthatmightcauseharmand takeappropriateactions.DesigneragreesthatpriortousingordistributinganyapplicationsthatincludeTIproducts,Designerwill thoroughlytestsuchapplicationsandthefunctionalityofsuchTIproductsasusedinsuchapplications. TI’sprovisionoftechnical,applicationorotherdesignadvice,qualitycharacterization,reliabilitydataorotherservicesorinformation, including,butnotlimitedto,referencedesignsandmaterialsrelatingtoevaluationmodules,(collectively,“TIResources”)areintendedto assistdesignerswhoaredevelopingapplicationsthatincorporateTIproducts;bydownloading,accessingorusingTIResourcesinany way,Designer(individuallyor,ifDesignerisactingonbehalfofacompany,Designer’scompany)agreestouseanyparticularTIResource solelyforthispurposeandsubjecttothetermsofthisNotice. TI’sprovisionofTIResourcesdoesnotexpandorotherwisealterTI’sapplicablepublishedwarrantiesorwarrantydisclaimersforTI products,andnoadditionalobligationsorliabilitiesarisefromTIprovidingsuchTIResources.TIreservestherighttomakecorrections, enhancements,improvementsandotherchangestoitsTIResources.TIhasnotconductedanytestingotherthanthatspecifically describedinthepublisheddocumentationforaparticularTIResource. Designerisauthorizedtouse,copyandmodifyanyindividualTIResourceonlyinconnectionwiththedevelopmentofapplicationsthat includetheTIproduct(s)identifiedinsuchTIResource.NOOTHERLICENSE,EXPRESSORIMPLIED,BYESTOPPELOROTHERWISE TOANYOTHERTIINTELLECTUALPROPERTYRIGHT,ANDNOLICENSETOANYTECHNOLOGYORINTELLECTUALPROPERTY RIGHTOFTIORANYTHIRDPARTYISGRANTEDHEREIN,includingbutnotlimitedtoanypatentright,copyright,maskworkright,or otherintellectualpropertyrightrelatingtoanycombination,machine,orprocessinwhichTIproductsorservicesareused.Information regardingorreferencingthird-partyproductsorservicesdoesnotconstitutealicensetousesuchproductsorservices,orawarrantyor endorsementthereof.UseofTIResourcesmayrequirealicensefromathirdpartyunderthepatentsorotherintellectualpropertyofthe thirdparty,oralicensefromTIunderthepatentsorotherintellectualpropertyofTI. TIRESOURCESAREPROVIDED“ASIS”ANDWITHALLFAULTS.TIDISCLAIMSALLOTHERWARRANTIESOR REPRESENTATIONS,EXPRESSORIMPLIED,REGARDINGRESOURCESORUSETHEREOF,INCLUDINGBUTNOTLIMITEDTO ACCURACYORCOMPLETENESS,TITLE,ANYEPIDEMICFAILUREWARRANTYANDANYIMPLIEDWARRANTIESOF MERCHANTABILITY,FITNESSFORAPARTICULARPURPOSE,ANDNON-INFRINGEMENTOFANYTHIRDPARTYINTELLECTUAL PROPERTYRIGHTS.TISHALLNOTBELIABLEFORANDSHALLNOTDEFENDORINDEMNIFYDESIGNERAGAINSTANYCLAIM, INCLUDINGBUTNOTLIMITEDTOANYINFRINGEMENTCLAIMTHATRELATESTOORISBASEDONANYCOMBINATIONOF PRODUCTSEVENIFDESCRIBEDINTIRESOURCESOROTHERWISE.INNOEVENTSHALLTIBELIABLEFORANYACTUAL, DIRECT,SPECIAL,COLLATERAL,INDIRECT,PUNITIVE,INCIDENTAL,CONSEQUENTIALOREXEMPLARYDAMAGESIN CONNECTIONWITHORARISINGOUTOFTIRESOURCESORUSETHEREOF,ANDREGARDLESSOFWHETHERTIHASBEEN ADVISEDOFTHEPOSSIBILITYOFSUCHDAMAGES. UnlessTIhasexplicitlydesignatedanindividualproductasmeetingtherequirementsofaparticularindustrystandard(e.g.,ISO/TS16949 andISO26262),TIisnotresponsibleforanyfailuretomeetsuchindustrystandardrequirements. WhereTIspecificallypromotesproductsasfacilitatingfunctionalsafetyorascompliantwithindustryfunctionalsafetystandards,such productsareintendedtohelpenablecustomerstodesignandcreatetheirownapplicationsthatmeetapplicablefunctionalsafetystandards andrequirements.Usingproductsinanapplicationdoesnotbyitselfestablishanysafetyfeaturesintheapplication.Designersmust ensurecompliancewithsafety-relatedrequirementsandstandardsapplicabletotheirapplications.DesignermaynotuseanyTIproductsin life-criticalmedicalequipmentunlessauthorizedofficersofthepartieshaveexecutedaspecialcontractspecificallygoverningsuchuse. Life-criticalmedicalequipmentismedicalequipmentwherefailureofsuchequipmentwouldcauseseriousbodilyinjuryordeath(e.g.,life support,pacemakers,defibrillators,heartpumps,neurostimulators,andimplantables).Suchequipmentincludes,withoutlimitation,all medicaldevicesidentifiedbytheU.S.FoodandDrugAdministrationasClassIIIdevicesandequivalentclassificationsoutsidetheU.S. TImayexpresslydesignatecertainproductsascompletingaparticularqualification(e.g.,Q100,MilitaryGrade,orEnhancedProduct). Designersagreethatithasthenecessaryexpertisetoselecttheproductwiththeappropriatequalificationdesignationfortheirapplications andthatproperproductselectionisatDesigners’ownrisk.Designersaresolelyresponsibleforcompliancewithalllegalandregulatory requirementsinconnectionwithsuchselection. DesignerwillfullyindemnifyTIanditsrepresentativesagainstanydamages,costs,losses,and/orliabilitiesarisingoutofDesigner’snon- compliancewiththetermsandprovisionsofthisNotice. MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265 Copyright©2018,TexasInstrumentsIncorporated