MM58342

MM58342 TI1 | Alldatasheet

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www.ti.com SNOSBV5C –FEBRUARY 1995–REVISED APRIL 2013 MM58342HighVoltageDisplayDriver Check forSamples: MM58342 1FEATURES APPLICATIONS 2• DirectInterfacetoHigh VoltageDisplay • COPS ™ or Microprocessor-drivenDisplays

• SerialData Input • InstrumentationReadouts
• No ExternalResistorsRequired • IndustrialControlIndicator
• Wide DisplayPower Supply Operation • DigitalClock,Thermostat,Counter,Voltmeter
• LSTTL Compatible Inputs • Word Processor TextDisplays
• SoftwareCompatible withNS DisplayDriver • Automotive Dashboards Family DESCRIPTION• Compatible withAlphanumeric or Dot Matrix The MM58342 isa monolithicMOS integratedcircuitDisplays utilizingCMOS metal gate low thresholdP- and N-• DisplayBlankingControlInput channeldevices.Itisavailablebothin28-pinmolded• Simple toCascade dual-in-linepackages or as dice.The MM58342 is particularlysuitedfordrivinghighvoltage(35V max) vacuum fluorescent(VF) displays(e.g.,a 20-digit alphanumericordotmatrixdisplay). Block Diagram These deviceshave limitedbuilt-inESD protection.The leadsshouldbe shortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamage totheMOS gates. Pleasebe aware thatan importantnoticeconcerningavailability,standardwarranty,and use incriticalapplicationsof Texas Instrumentssemiconductorproductsand disclaimerstheretoappearsattheend ofthisdatasheet. 2Alltrademarksarethepropertyoftheirrespectiveowners. PRODUCTION DATA informationiscurrentas ofpublicationdate. Copyright© 1995–2013,Texas InstrumentsIncorporatedProductsconform to specificationsper the terms of the Texas Instrumentsstandardwarranty.Productionprocessingdoes not necessarilyincludetestingofallparameters.

SNOSBV5C –FEBRUARY 1995–REVISED APRIL 2013 www.ti.com AbsoluteMaximum Ratings(1)(2) VoltageatAny InputPin VDD + 0.3Vto VSS −0.3V VoltageatAny DisplayPin VDD toVDD −36.5V VDD + |VDIS| 36.5V StorageTemperature −65°C to+150°C Power Dissipationat25°C Molded DIP Package,Board Mount 2.03W (3) Molded DIP Package,SocketMount 1.83W (4) JunctionTemperature 130°C Lead Temperature(Soldering,10 sec.) 260°C (1) AbsoluteMaximum Ratingsindicatelimitsbeyond whichdamage tothedevicemay occur. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexas InstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Molded DIP Package,Board Mount,θJA = 52°C/W, derate19.2mW/ °C above 25°C. (4) Molded DIP Package,SocketMount,θJA = 58°C/W, derate17.2mW/ °C above 25°C. OperatingConditions Min Max Units SupplyVoltage(VDD ) VSS = 0V 4.5 5.5 V DisplayVoltage(VDIS) −30 −10 V TemperatureRange −40 +85 °C ElectricalCharacteristics TA = −40°C to+85°C, VDD = 5V ±0.5V,VSS = 0V unlessotherwisespecified Symbol Parameter Conditions Min Typ Max Units Power SupplyCurrents IDD VIN = VSS orVDD ,VSS = 0V, 150 µAVDIS Disconnected IDIS VDD = 5.5V,VSS = 0V,VDIS = −30V 10 mAAllOutputsLow InputLogicLevels DATA IN,CLOCK ENABLE, BLANK VIL Logic“0” 0.8 V VIH Logic“1” See (1) 2.4 V Data OutputLogicLevels VOL Logic“0” IOUT = 400 µA 0.4 V VOH Logic“1” IOUT = −10 µA VDD −0.5 V VOH Logic“1” IOUT = −500 µA 2.8 V IIN InputCurrentsDATA IN,CLOCK VIN = 0V orVDD −10 10 µAENABLE, BLANK C IN InputCapacitanceDATA IN, 15 pFCLOCK ENABLE, BLANK DisplayOutputImpedances VDD = 5.5V,VSS = 0V R OFF OutputOff(Figure3) VDIS = −10V 55 250 kΩ VDIS = −20V 60 300 kΩ VDIS = −30V 65 400 kΩ R ON OutputOn (Figure4) VDIS = −10V 700 800 Ω VDIS = −20V 600 750 Ω VDIS = −30V 500 680 Ω VDOL DisplayOutputLow Voltage VDD = 5.5V,IOUT = Open Circuit, VDIS VDIS + 2 V−30V ≤ VDIS ≤ −10V (1) 74LSTTL VOH = 2.7V@ IOUT = −400 µA,TTL VOH = 2.4V@ IOUT = −400 µA.

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www.ti.com SNOSBV5C –FEBRUARY 1995–REVISED APRIL 2013 AC ElectricalCharacteristics TA = −40°C to+85°C, VDD = 5V ±0.5V Symbol Parameter Conditions Min Typ Max Units ClockInput See (1)(2) fC Frequency 800 kHz tH HighTime 300 ns tL Low Time 300 ns Data Input tDS Set-UpTime 100 ns tDH HoldTime 100 ns EnableInput See (3) tES Set-UpTime 100 ns tEH HoldTime 100 ns Data Output C L = 50 pF tCDO 500 nsClockLow toData Out Time (1) AC inputwaveform specificationfortestpurposes:tr,tf≤ 20 ns,f= 800 kHz,50% ±10% dutycycle. (2) Clockinputriseand falltimesmust notexceed 5 µs. (3) Fortimingpurposes,thesignalsENABLE and BLANK can be consideredtobe totallyindependentofeach other. Connection Diagrams Figure1.Dual-In-LinePackage -Top View Figure2.PlasticChip Carrier-Top View Package PLCC (FN) Copyright© 1995–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:MM58342

SNOSBV5C –FEBRUARY 1995–REVISED APRIL 2013 www.ti.com FUNCTIONAL DESCRIPTION Thisproductisspecificallydesignedto drivemultiplexedor non-multiplexedhighvoltagealphanumericor dot matrixvacuum fluorescent(VF)displays.Charactergenerationisdone externallyinthemicroprocessor,witha serialdatapathtothedisplaydriver.The MM58342 uses threesignals,DATA IN,CLOCK and ENABLE, where ENABLE acts as an externalload signal.Displayblankingcan be achievedby means of the BLANKING CONTROL input,and a logic“1” willturnoffallsectionsof the display.A blockdiagram of the MM58342 is shown inBlockDiagram. Figure1 shows thepinoutoftheMM58342 device,where output1 (pin12)isequivalenttobit1 (i.e.,thefirstbit of data to be loaded intothe shiftregisterfollowingENABLE high).A logic“1” at the inputwillturnon the correspondingdisplaydigit/segment/dotoutput. A significantreductionindiscreteboardcomponents can be achievedby use oftheMM58342, because external pull-downresistorsarenotrequired.Due tothenatureoftheoutputstage,bothitson and offimpedance values vary as a functionof the displayvoltageapplied.However, Figure3 and Figure4 show thatthisoutput impedance willremainconstantfora fixedvalueofdisplayvoltage. Figure5 demonstratesthecriticaltimingrequirementsbetween CLOCK and DATA IN fortheMM58342. To clear(reset)thedisplaydriveratpower on orany time,thefollowingflushingroutinemay be used.Withthe enable signalhigh,clockin 20 zeroes.Drive the enable signallow and the displaywillbe blank.Itis recommended toclearthedriveratpower on. InFigure6,theENABLE signalactsas an envelope,and onlywhilethissignalisata logic“1” does thecircuit acceptCLOCK inputsignals.Data istransferredand shiftedintheinternalshiftregisteron therisingclockedge, i.e.,“0”–“1”transition.When theENABLE signalgoes low,thecontentsoftheshiftregistersarelatched,and the displaywillshow new data.Duringdatatransfer,thedisplaywillshow olddata.DATA OUT isalsoprovidedon theMM58342 beingoutputon thefallingedge.At any time,thedisplaymay be blankedunderprocessorcontrol, usingtheBLANKING CONTROL input. Figure7 shows a schematicdiagramofa microprocessor-basedsystem where theMM58342 isused toprovide the griddrivefora 40-digit2 line5 x 7 multiplexedvacuum fluorescent(VF) display.The anode driveinthis example isprovidedby anothermember ofthehighvoltagedisplaydriverfamily,namely theMM58348, which does notrequirean extremelygeneratedloadsignal. Figure3. Output Impedance Off Figure4. Output Impedance On

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www.ti.com SNOSBV5C –FEBRUARY 1995–REVISED APRIL 2013 Timing Diagrams Figure5. Clock and Data Timings Figure6. Timings (DataFormat) TypicalApplication Figure7. Microprocessor-ControlledWord Processor Copyright© 1995–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:MM58342

SNOSBV5C –FEBRUARY 1995–REVISED APRIL 2013 www.ti.com

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