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USC EE 459Lx - 74ls21

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5-1FAST AND LS TTL DATADUAL 4-INPUT AND GATE14 13 12 11 10 9123456VCC87GNDGUARANTEED OPERATING RANGESSymbol Parameter Min Typ Max UnitVCCSupply Voltage 54744.54.755.05.05.55.25VTAOperating Ambient Temperature Range 5474–550252512570°CIOHOutput Current — High 54, 74 –0.4 mAIOLOutput Current — Low 54744.08.0mASN54/74LS21DUAL 4-INPUT AND GATELOW POWER SCHOTTKYJ SUFFIXCERAMICCASE 632-08N SUFFIXPLASTICCASE 646-06141141ORDERING INFORMATIONSN54LSXXJ CeramicSN74LSXXN PlasticSN74LSXXD SOIC141D SUFFIXSOICCASE 751A-025-2FAST AND LS TTL DATASN54/74LS21DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)SblPLimitsUiT C di iSymbol ParameterMin Typ MaxUnit Test ConditionsVIHInput HIGH Voltage 2.0 VGuaranteed Input HIGH Voltage forAll InputsVILInput LOW Voltage54 0.7VGuaranteed Input LOW Voltage forVILInput LOW Voltage74 0.8VpgAll InputsVIKInput Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mAVOHOutput HIGH Voltage54 2.5 3.5 VVCC = MIN, IOH = MAX, VIN = VIHVOHOutput HIGH Voltage74 2.7 3.5 VCC,OH,IN IHor VIL per Truth TableVOLOutput LOW Voltage54, 74 0.25 0.4 V IOL = 4.0 mAVCC = VCC MIN,VIN=VILor VIHVOLOutput LOW Voltage74 0.35 0.5 V IOL = 8.0 mAVIN = VIL or VIHper Truth TableIIHInput HIGH Current20 µA VCC = MAX, VIN = 2.7 VIIHInput HIGH Current0.1 mA VCC = MAX, VIN = 7.0 VIILInput LOW Current –0.4 mA VCC = MAX, VIN = 0.4 VIOSShort Circuit Current (Note 1) –20 –100 mA VCC = MAXICCPower Supply CurrentTotal, Output HIGH2.4mA VCC = MAXICCpTotal, Output LOW4.4mAVCC MAXNote 1: Not more than one output should be shorted at a time, nor for more than 1 second.AC CHARACTERISTICS (TA = 25°C)SblPLimitsUiT C di iSymbol ParameterMin Typ MaxUnit Test ConditionstPLHTurn-Off Delay, Input to Output 8.0 15 nsVCC = 5.0 VtPHLTurn-On Delay, Input to Output 10 20 nsCCCL = 15


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USC EE 459Lx - 74ls21

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