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1、SL74LS14HexSchmitt-TriggerInverterThisdevicecontainssixindependentgateseachofwhichperformsthelogicINVERTfunction.Eachinputhashysteresiswhichincreasesthenoiseimmunityandtransformsaslowlychanginginputsignaltoafastchanging,jitterfreeoutput.ORDERINGINFORMATIONSL74LS14NPlasticSL74LS14DSOICTA=0°t
2、o70°CforallpackagesLOGICDIAGRAMPINASSIGNMENTFUNCTIONTABLEInputsOutputAYLHHLPIN14=VCCPIN7=GNDSystemLogicSLSSemiconductorSL74LS14*MAXIMUMRATINGSSymbolParameterValueUnitVCCSupplyVoltage7.0VVINInputVoltage7.0VVOUTOutputVoltage5.5VTstgStorageTemperatureRange-65to+150°C*MaximumRatingsarethosevalu
3、esbeyondwhichdamagetothedevicemayoccur.FunctionaloperationshouldberestrictedtotheRecommendedOperatingConditions.RECOMMENDEDOPERATINGCONDITIONSSymbolParameterMinMaxUnitVCCSupplyVoltage4.755.25VIOHHighLevelOutputCurrent-15mAIOLLowLevelOutputCurrent24mATAAmbientTemperatureRange0+70°CDCELECTRIC
4、ALCHARACTERISTICSoverfulloperatingconditionsGuaranteedLimitSymbolParameterTestConditionsMinMaxUnitVT+-Positive-GoingInputThresholdVCC=5V0.51VVoltageVT--Negative-GoingInputThresholdVCC=5V1.41.9VVoltageVT+-VT-HysteresisVCC=5V0.4VVIKInputClampVoltageVCC=min,IIN=-18mA-1.5VVOHHighLevelOutputVolt
5、ageVCC=min,IOH=-0.4mA,2.7VVI=0.5VVOLLowLevelOutputVoltageVCC=min,IOL=4mA0.4VVI=1.9VVCC=min,IOL=8mA0.5VI=1.9VIIHHighLevelInputCurrentVCC=max,VIN=2.7V20mAVCC=max,VIN=7.0V0.1mAIILLowLevelInputCurrentVCC=max,VIN=0.4V-0.4mAIOOutputShortCircuitCurrentVCC=max,VO=0V-20-100mA(Note1)ICCSupplyCurrentT
6、otalwithVCC=max16mAoutputshighTotalwith21outputslowSystemLogicSLSSemiconductorSL74LS14Note1:Notmorethanoneoutputshouldbeshortedatatime,andthedurationshouldnotexceedonesecond.SystemLogicSLSSemiconductorSL74LS14ACELECTRICALCHARACTERISTICS(TA=25°C,VCC=5.0V,CL=15pF,RL=2kW,tr=15ns,tf=6.0ns)Symbo
7、lParameterMinMaxUnittPLHPropagationDelay,InputAtoOutputY22nstPHLPropagationDelay,InputAtoOutputY22nsFigure1.SwitchingWaveformsNOTESA.CLincludesprobeandjigcapacitance.B.Alldiodesare1N916or1N3064.Figure2.TestCircuitSystemLogicSLSSemiconductor
