74AC253 ,Dual 4-Input Multiplexer with TRI-STATE Outputs54AC/74AC253 54ACT/74ACT253Dual4-InputMultiplexerwithTRI-STATEOutputs#July199554AC/74AC253 54ACT/74 ..
74AC253SC ,Dual 4-Input Multiplexer with 3-STATE OutputsFeaturesThe AC/ACT253 is a dual 4-input multiplexer with 3-STATE
74AC253
Dual 4-Input Multiplexer with TRI-STATE Outputs
TL/F/9946
54AC/74AC253
54ACT/74ACT253
Dual
4-Input
Multiplexer
with
TRI-STATE
Outputs
July 1995
54AC/74AC253# 54ACT/74ACT253
Dual 4-Input Multiplexer with TRI-STATEÉ Outputs
General Description
The ’AC/’ACT253isa dual 4-input multiplexer with TRI-
STATE outputs.It can selecttwo bitsof data from four
sources using common select inputs. The outputs maybe
individually switchedtoa high impedance statewitha HIGHthe respective Output Enable (OE) inputs, allowingthe
outputsto interface directlywithbus oriented systems.
Features ICCandIOZ reducedby 50% Multifunction capability Noninverting TRI-STATE outputs Outputs source/sink24mA ’ACT253has TTL-compatible inputs Standard Military Drawing (SMD) ’AC253: 5962-87693 ’ACT253: 5962-87761
Logic Symbols Connection Diagrams
TL/F/9946–1
IEEE/IEC
TL/F/9946–2
Pin Assignment
forDIP, Flatpakand SOIC
TL/F/9946–3
Pin Names Description
I0a–I3a Side AData Inputs
I0b–I3b Side BData Inputs
S0,S1 CommonSelect Inputs
OEa Side AOutput EnableInput
OEb Side BOutput EnableInput
Za,Zb TRI-STATE Outputs
Pin Assignment
for LCC
TL/F/9946–4
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
FACTTMisa trademarkof NationalSemiconductor Corporation.
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
