NE556双路精密定时器

1、NE556SA556SE556July1998 #/9July1998 /9GENERALPURPOSEDUALBIPOLARTIMERSLOWTURNOFFTIMEMAXIMUMOPERATINGFREQUENCYGREATERTHAN500kHzTIMINGFROMMICROSECONDSTOHOURSOPERATESINBOTHASTABLEANDMONOSTABLEMODESHIGHOUTPUTCURRENTCANSOURCEORSINK200mAADJUSTABLEDUTYCYCLETTLCOMPATIBLENDIP14(PlasticPackage)DSO14(PlasticMic

2、ropackage)TEMPERATURESTABILITYOF0.005%PERCNE556SA556SE556July1998 #/9July1998 #/9NE556SA556SE556July1998 #/9July1998 #/9DESCRIPTIONTheNE556dualmonolithictimingcircuitisahighlystablecontrollercapableofproducingaccuratetimedelaysoroscillation.Inthetimedelaymodeofoperation,thetimeispreciselycontrolledb

3、yoneexternalresistorandcapacitor.Forastableoperationasanoscillator,thefreerunningfrequencyandthedutycyclearebothaccuratelycontrolledwithtwoexternalresistorsandonecapacitor.Thecircuitmaybetriggeredandresetonfallingwaveforms,andtheoutputstructurecansourceorsinkupto200mA.ORDERCODESPartNumberTemperature

4、RangePakcageNDNE5560Ct70CSA556-40C;105CSE556-55C;125CNE556SA556SE556July1998 #/9July1998 #/9NE556SA556SE556July1998 #/9July1998 #/9PINCONNECTIONS(topview)Discharge114VccThreshold2匚13DischargeControlVoltage3匚12ThresholdReset4匚11ControlVoltageOutput5J10ResetTrigger6匚9OutputGND7匚J8TriggerNE556/SA556/SE

5、556NE556/SA556/SE556 /9叼 /9BLOCKDIAGRAMDISCHARGEOUT|/2NE556SCHEMATICDIAGRAMOUTPUTCONTROLVOLUGETHRESHOLDoCOMPARATORRESETDISCHARGECCCCCCCC)(-note1)-(2timers)LowStatevcc=+5VVcc=+15VHighStateVcc=5V6204102462041230mATimingError(monostable)(Ra=2kto100kQ,C=0.1pF)InitialAccuracy(note2)DriftwithTemperatureDr

6、iftwithSupplyVoltage0.5300.0521000.21500.130.5%ppm/C%/VTimingError(astable)(Ra,Rb=1kdto10OkQ,C=0.1pF,Vcc=+15V)InitialAccuracy(note2)DriftwithTemperatureDriftwithSupplyVoltage1.5900.152.251500.3%ppm/C%/VVCLControlVoltagelevelVcc=+15VVcc=+5V9.62.9103.3310.43.892.6103.33114VVthThresholdVoltagefcc=+15VV

7、cc=+5V9.42.7103.3310.648.82.4103.3311.24.2VIthThresholdCurrent-(note3)0.25mAVtrigTriggerVoltageVcc=+15VVcc=+5V4.81.4551.61.151.675.62.2VItrigTriggerCurrent(Vlrig=0V)2.0pAVresetResetVoltage-(note4)0.40.710.40.71VIresetResetCurrentVreset=+0.4VVreset=0V1.

8、5mAVolLowLevelOutputVoltaaeVcc=+15V,lo(sink)=10mAlo(sink)=50mAlo(sink)=100mAlo(sink)=200mAVcc=+5V,lo(sink)=8mAlo(sink)=5mA0.10.40.450.250.75VVohHighLevelOutputVoltageVcc=+15V,O(source)=200mAO(source)=100mAVcc=+5V,O(source)=100mA13312.513.33.312.752.

9、7512.513.33.3VNotes:1.Supplycurrentwhenoutputishighistypically1mAless.TestedatVcc=+5VandVcc=十15V.ThiswilldeterminethemaximumvalueofRA+Refor+15VoperationthemaxtotalisR=20MQandfor5VoperationthemaxtotalR=3.5MQSpecifiedwithtriggerinputhigh.ELECTRICALCHARACTERISTICS(continued)SymbolParameterSE556NE556SA5

10、56UnitMin.Typ.Max.Min.Typ.Max.Idis(off)DischargePinLeakageCurrent(outputhigh)(Vis=10V)2010020100nAVdis(sat)DischaraepinSaturationVoltage(outputlow)-(note5)Vcc=+15V,Idis=15mAVcc=+5V,idis=4.5mA1808048020018080480200mVtrtfOutputRiseTimeOutputFallTime100100200200100100300300nstoffTurnoffTime-(note6)(Vre

11、set=Vcc)0.50.5MSMotes:5.NoprotectionagainstexcessivePin7currentisnecessary,providingthepackagedissipationratingwillnotbeexceeded.6.Timemesauredfromapositivegoinginputpulsefrom0to0.8xVccintothethresholdtothedropfromhightolowoftheoutputtriggeristiedtotreshold.NE556/SA556/SE556NE556/SA556/SE556 #/9叼 #/

12、9NE556/SA556/SE556NE556/SA556/SE556 #/9叼 #/9Figure1:MinimumPulseWidthRequiredforTrigeringFigure3:DelayTimeversusTemperature6-5025Figure4:LowOutputVoltageversusOutputSinkCurrentNE556/SA556/SE556NE556/SA556/SE556 #/9叼 /9NE556/SA556/SE556NE556/SA556/SE556 /9叼 #/9Figure6:LowOutputVoltageversusOutputSink

13、CurrentFigure5:LowOutputVoltageversusOutputSinkCurrentC-WB-55cLI三P么G乂9W20Figure7:HighOutputVoltageDropversusOutputFigure8:DelayTimeversusSupplyVoltageG-W25Figure9:PropagationDelayversusVoltageLevelofTriggerValuebi117一-SVCt0*c21-crcit/unt1QI0203Vj(V)NE556/SA556/SE556NE556/SA556/SE556 #/9叼 /9PULSEWIDT

14、HMODULATORTYPICALAPPLICATION50%DUTYCYCLEOSCILLATORNE556/SA556/SE556NE556/SA556/SE556 #/9叼 #/9NE556/SA556/SE556NE556/SA556/SE556 /9叼 #/9ti=0.693Ra.Ct2=(RaRb)/(Ra+Rb)CLnRb-2Ra2RbRaRaOutputcRb；RaHNE556/SA556/SE556NE556/SA556/SE556 #/9 /9TONEBURSTGENERATORForatoneburstgeneratorthefirsttimerisusedasamono

15、stableanddeterminesthetonedurationwhentriggeredbyapositivepulseatpin6.Thesecondtimerisenabledbythehighoutputosthemonostable.Itisconnectedasanastableanddeterminesthefrequencyofthetone.1+15VResetDischargelogger13TriggerDischarge12Threshold-O8Trigger-O111Conlrol-O-i1CNE556SE5565101CNE556SE556OutputRese

16、tControlo-Outputr-OOThresholdGround0.01MPGroUnd0.01KFOGroundMONOSTABLEOPERATIONASTABLEOPERATIONRa+2Rb)Ci(10)H(13)|1|(13)1/2NE556SE556Ra(12)T=1.1R、CANE556/SA556/SE556NE556/SA556/SE556 #/9 #/9NE556/SA556/SE556NE556/SA556/SE556 #/9 #/9ti=0.693(Ra+Rb)COutputHight2=0.693RbCOutputLowNE556/SA556/SE556NE556

17、/SA556/SE556 /9 /9PACKAGEMECHANICALDATA14PINSPLASTICDIPBmmmmmmm2:u.LJllLJLJLJLJLJDimensionsMillimetersInchesMin.Typ.Max.Min.Typ.Max.a10.510.020B1.391.650.0550.065b0.50.020b10.250.010D200.787E8.50.335e2.540.100e315.240.600F7.10.28015.10.201L3.30.130Z1.272.540.0500.100PACKAGEMECHANICALDATA14PINSPLASTI

18、CMICROPACKAGE(SO)14817liuuuuuLlDimensionsMillimetersInchesMin.Typ.Max.Min.Typ.Max.A1.750.069a040.008a21.60.063b0.350.460.0140.018b070.010C0.50.020c145typ)D8.558.750.3360.334E280.244e1.270.050e37.620.300F3.84.00.1500.157G810.208L0.51.270.0200.050M0.680.027S8(max.)InformationfurnishedIsbelievedtobeaccurateandreliableHowever,STMicroelectronicsassumesnoresponsibilityfortheconsequencesofuseofsuchinformationnorforanyInfringementofpatentsorotherrightsofthirdpartieswhichmayresultfromitsuseNolicenseisgrantedbyimplicationorotherwiseun