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54LS125N/a2avaiQuad TRI-STATE Buffer


54LS125 ,Quad TRI-STATE BufferFeatureslines without external resistors. When disabled, both theYAlternate Military/Aerospace devi ..
54LS126 , QUAD TRI-STATE BUFFERS
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54LS125
Quad TRI-STATE Buffer
TL/F/6387
54LS125A/DM54LS125A/DM74LS125A
Quad
TRI-STATE
Buffers
June 1989
54LS125A/DM54LS125A/DM74LS125A
Quad TRI-STATEÉ Buffers
General Description
This device contains four independent gates eachof which
performsa non-inverting buffer function. The outputs have
the TRI-STATE feature. When enabled,the outputs exhibit
thelow impedance characteristicsofa standardLS output
with additional drive capabilityto permitthe drivingofbus
lines without external resistors. When disabled, boththe
output transistorsare turnedoff presentinga high-imped-
ance statetothebus line. Thus theoutput willact neitheras significant loadnorasa driver.To minimizethe possibility
thattwo outputswill attemptto takea commonbusto oppo-
site logic levels,the disable timeis shorter thanthe enable
timeofthe outputs.
Features Alternate Military/Aerospace device (54LS125)is avail-
able. Contacta National Semiconductor Sales Office/
Distributorfor specifications.
Connection Diagram
Dual-In-Line Package
TL/F/6387–1
Order Number 54LS125ADMQB, 54LS125AFMQB, 54LS125ALMQB,
DM54LS125AJ, DM54LS125AW,DM74LS125AMor DM74LS125AN
See NSPackage Number E20A, J14A, M14A, N14A orW14B
Function TableeA
Inputs Output Y L H H Hi-ZeHigh Logic LeveleLow Logic Levele EitherLow orHighLogicLevel
Hi-Ze TRI-STATE (Outputsare disabled)
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
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