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®
74VHC20
DUAL4-INPUTNANDGATE
PRELIMINARYDATA
ss
s
ss
s
s
s
s
HIGHSPEED:tPD=3.3ns(TYP.)atVCC=5VLOWPOWERDISSIPATION:ICC=2µA(MAX.)atTA=25oCHIGHNOISEIMMUNITY:VNIH=VNIL=28%VCC(MIN.)
POWERDOWNPROTECTIONONINPUTSSYMMETRICALOUTPUTIMPEDANCE:|IOH|=IOL=8mA(MIN)
BALANCEDPROPAGATIONDELAYS:tPLH≅tPHL
OPERATINGVOLTAGERANGE:VCC(OPR)=2Vto5.5V
PINANDFUNCTIONCOMPATIBLEWITH74SERIES20
IMPROVEDLATCH-UPIMMUNITY
M
(MicroPackage)T
(TSSOPPackage)
ORDERCODES:
74VHC20M74VHC20T
immunityandstableoutput.
Powerdownprotectionisprovidedonallinputsand0to7Vcanbeacceptedoninputswithnoregardtothesupplyvoltage.Thisdevicecanbeusedtointerface5Vto3V.
Allinputsandoutputsareequippedwithprotectioncircuitsagainststaticdischarge,givingthem2KVESDimmunityandtransientexcessvoltage.
DESCRIPTION
The74VHC20isanadvancedhigh-speedCMOSDUAL4-INPUTNANDGATEfabricatedwithsub-micronsilicongateanddouble-layermetalwiringC2MOStechnology.
Theinternalcircuitiscomposedof3stagesincludingbufferoutput,whichprovidehighnoise
PINCONNECTIONANDIECLOGICSYMBOLS
June19991/7
元器件交易网www.cecb2b.com
74VHC20
INPUTEQUIVALENTCIRCUIT
PINDESCRIPTION
PINNo1,92,103,114,125,136,8714
SYMBOL1Ato2A1Bto2BN.C.1Cto2C1Dto2D1Yto2YGNDVCC
NAMEANDFUNCTIONDataInputsDataInputsNotConnectedDataInputsDataInputsDataOutputsGround(0V)
PositiveSupplyVoltage
TRUTHTABLE
ALXXXH
X:”H”or”L”
BXLXXH
CXXLXH
DXXXLH
YHHHHL
ABSOLUTEMAXIMUMRATINGS
SymbolVCCVIVOIIKIOKIOTstgTL
SupplyVoltageDCInputVoltageDCOutputVoltageDCInputDiodeCurrentDCOutputDiodeCurrentDCOutputCurrentStorageTemperatureLeadTemperature(10sec)
Parameter
Value-0.5to+7.0-0.5to+7.0-0.5toVCC+0.5
-20±20±25±50-65to+150
300
UnitVVVmAmAmAmA
oo
ICCorIGNDDCVCCorGroundCurrent
CC
AbsoluteMaximumRatingsarethosevaluesbeyondwhichdamagetothedevicemayoccur.Functionaloperationundertheseconditionisnotimplied.
RECOMMENDEDOPERATINGCONDITIONS
SymbolVCCVIVOTopdt/dv
SupplyVoltageInputVoltageOutputVoltageOperatingTemperature
InputRiseandFallTime(seenote1)(VCC=3.3±0.3V)
(VCC=5.0±0.5V)
Parameter
Value2.0to5.50to5.50toVCC-40to+850to1000to20
UnitVVV
o
C
ns/Vns/V
1)VINfrom30%to70%ofVCC
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74VHC20
DCSPECIFICATIONS
Symbol
Parameter
TestConditionsVCC(V)
VIHVILVOH
HighLevelInputVoltageLowLevelInputVoltage
HighLevelOutputVoltage
2.03.0to5.52.03.0to5.52.03.04.53.04.5
VOL
LowLevelOutputVoltage
2.03.04.53.04.5
IIICC
InputLeakageCurrentQuiescentSupplyCurrent
0to5.55.5
IO=-50µAIO=-50µAIO=-50µAIO=-4mAIO=-8mAIO=50µAIO=50µAIO=50µAIO=4mAIO=8mAVI=5.5VorGNDVI=VCCorGND
1.92.94.42.583.94
0.00.00.0
0.10.10.10.360.36±0.12
2.03.04.5
o
Value
TA=25CMin.1.50.7VCC
0.50.3VCC
1.92.94.42.483.8
0.10.10.10.440.44±1.020
Typ.
Max.
-40to85CMin.1.50.7VCC
0.50.3VCCMax.
o
Unit
VV
V
V
µAµA
ACELECTRICALCHARACTERISTICS(Inputtr=tf=3ns)
Symbol
Parameter
TestConditionVCCCL(V)(pF)3.33.3(*)5.0(**)5.0
(*)Voltagerangeis3.3V±0.3V(**)Voltagerangeis5V±0.5V
(**)(*)
Value
TA=25oCMin.
Typ.4.67.13.34.8
Max.6.610.15.07.0
Unit
-40to85oCMin.1.01.01.01.0
Max.8.011.56.08.0
tPLHtPHLPropagationDelayTime
15501550
ns
CAPACITIVECHARACTERISTICS
Symbol
Parameter
TestConditions
o
Value
TA=25CMin.
Typ.419
Max.10
-40to85CMin.
Max.10
o
Unit
CINCPD
InputCapacitancePowerDissipationCapacitance(note1)
pFpF
1)CPDisdefinedasthevalueoftheIC’sinternalequivalentcapacitancewhichiscalculatedfromtheoperatingcurrentconsumptionwithoutload.(RefertoTestCircuit).Averageoperatingcurrentcanbeobtainedbythefollowingequation.ICC(opr)=CPD•VCC•fIN+ICC/4(perGate)
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74VHC20
TESTCIRCUIT
CL=15/50pForequivalent(includesjigandprobecapacitance)RT=ZOUTofpulsegenerator(typically50Ω)
WAVEFORM:PROPAGATIONDELAYS(f=1MHz;50%dutycycle)
4/7
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74VHC20
SO-14MECHANICALDATA
DIM.
MIN.
Aa1a2bb1Cc1DEee3FGLMS
3.84.60.58.555.8
1.277.62
4.05.31.270.68
8(max.)
0.1490.1810.019
8.756.2
0.350.19
0.5
45(typ.)
0.3360.228
0.0500.300
0.1570.2080.0500.0260.3440.244
0.1
mmTYP.
MAX.1.750.21.650.460.25
0.0130.007
0.019
0.003MIN.
inchTYP.
MAX.0.0680.0070.00.0180.010
P013G
5/7
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74VHC20
TSSOP14MECHANICALDATA
mm
MIN.
AA1A2bcDEE1eKL
0o0.500.050.850.190.094.96.254.3
56.44.40.65BSC
4o0.60
8o0.70
0o0.020
0.100.9TYP.
MAX.1.10.150.950.300.205.16.54.48
0.0020.3350.00750.00350.1930.2460.169
0.1970.2520.1730.0256BSC
4o0.024
8o0.028
0.0040.354
MIN.
inchTYP.
MAX.0.4330.0060.3740.01180.00790.2010.2560.176
DIM.
A
A2
A1
b
e
K
c
L
E
D
E1
PIN1IDENTIFICATION
1
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74VHC20
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