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74ACT520NSN/a1786avai8-Bit Identity Comparator


74ACT520 ,8-Bit Identity Comparator54AC/74AC520 54ACT/74ACT5208-BitIdentityComparator#April199354AC/74AC520 54ACT/74ACT520#8-BitIdenti ..
74ACT520PC ,8-Bit Identity Comparator74AC520 • 74ACT520 8-Bit Identity ComparatorFebruary 1989Revised November 199974AC520  74ACT5208-B ..
74ACT520SJX ,8-Bit Identity ComparatorFeaturesThe AC/ACT520 are expandable 8-bit comparators. They

74ACT520
8-Bit Identity Comparator
TL/F/10194
54AC/74AC520
54ACT/74ACT520
8-Bit
Identity
Comparator
April 1993
54AC/74AC520# 54ACT/74ACT520
8-Bit Identity Comparator
General Description
The ’AC/’ACT520are expandable 8-bit comparators. They
comparetwo wordsofupto eightbits eachand providea
LOW output whenthetwo words matchbitforbit.Theex-
pansion inputIAeB also servesasan active LOW enable
input.
Features Comparestwo 8-bit wordsin6.5nstyp Expandabletoany word length 20-pin package Outputs source/sink24mA ’ACT520has TTL-compatible inputs
Logic Symbols
TL/F/10194–1
IEEE/IEC
TL/F/10194–4
Connection Diagrams
Pin Assignment
forDIP, Flatpakand SOIC
TL/F/10194–2
Pin Assignment
for LCC
TL/F/10194–3
PinNames Description
A0–A7 WordA Inputs
B0–B7 WordB InputseB ExpansionorEnable Input
OAeB Identity Output
FACTTMisa trademarkof NationalSemiconductor Corporation.
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
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