74AC251 ,8-Input Multiplexer with TRI-STATE Output54AC/74AC251 54ACT/74ACT2518-InputMultiplexerwithTRI-STATEOutput#February199354AC/74AC251 54ACT/74A ..
74AC251PC ,8-Input Multiplexer with 3-STATE OutputFeaturesThe AC/ACT251 is a high-speed 8-input digital multiplexer.
74AC251-74ACT251
8-Input Multiplexer with TRI-STATE Output
TL/F/9945
54AC/74AC251
54ACT/74ACT251
8-Input
Multiplexer
with
TRI-STATE
Output
February 1993
54AC/74AC251# 54ACT/74ACT251
8-Input Multiplexer with TRI-STATEÉ Output
General Description
The ’AC/’ACT251is ahigh-speed 8-input digital multiplexer. provides,in one package,the abilityto selectonebitof
data fromupto eight sources.Itcanbe usedas universal
function generatorto generate any logic functionof four
variables. Bothtrueand complementary outputsare provid-
ed.
Features ICC reducedby 50% Multifunctional capability On-chip select logic decoding Invertingand noninverting TRI-STATE outputs Outputs source/sink24mA ’ACT251has TTL-compatible inputs Standard Military Drawing (SMD) ’AC251: 5962-87692 ’ACT251: 5962-89599
Logic Symbols
TL/F/9945–1
IEEE/IEC
TL/F/9945–2
Connection Diagrams
Pin Assignment
forDIP, Flatpakand SOIC
TL/F/9945–3
Pin Assignment
for LCC
TL/F/9945–4
Pin Names Description
S0–S2 Select Inputs TRI-STATE Output Enable Input
I0–I7 Multiplexer Inputs TRI-STATE MultiplexerOutput ComplementaryTRI-STATE Multiplexer
Output
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
FACTTMisa trademarkof NationalSemiconductor Corporation.
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
