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54AC163TMN/a20avai4-Bit Binary Counter, Synchronous Reset
54AC163NSN/a20avai4-Bit Binary Counter, Synchronous Reset


54AC163 ,4-Bit Binary Counter, Synchronous Reset54AC/74AC163 54ACT/74ACT163SynchronousPresettableBinaryCounter#December199554AC/74AC163 54ACT/74ACT ..
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54AC163
4-Bit Binary Counter, Synchronous Reset
TL/F/9932
54AC/74AC163
54ACT/74ACT163
Synchronous
Presettable
Binary
Counter
December 1995
54AC/74AC163# 54ACT/74ACT163
Synchronous Presettable Binary Counter
General Description
The ’AC/’ACT163are high-speed synchronous modulo-16
binary counters. Theyare synchronously presettableforap-
plicationin programmable dividers and havetwo typesof
Count Enable inputsplusa Terminal Countoutputfor versa-
tilityin forming synchronous multistage counters.The ’AC/
’ACT163 hasa Synchronous Reset input that overrides
countingand parallel loading and allowsthe outputstobe
simultaneously resetonthe rising edgeofthe clock.
Features ICC reducedby 50% Synchronous countingand loading High-speed synchronous expansion Typical count rateof 125 MHz Outputs source/sink24mA ’ACT163has TTL-compatible inputs Standard Military Drawing (SMD) ’AC163: 5962-89582 ’ACT163: 5962-90575
Logic Symbols
TL/F/9932–1
IEEE/IEC
TL/F/9932–2
Connection Diagrams
Pin Assignment
forDIP, Flatpakand SOIC
TL/F/9932–3
Pin Assignment
for LCC
TL/F/9932–4
Pin Names Description
CEP Count EnableParallelInput
CET Count EnableTrickle Input Clock Pulse Input Synchronous ResetInput
P0–P3 Parallel Data Inputs Parallel Enable Input
Q0–Q3 Flip-Flop Outputs Terminal Count Output
FACTTMisa trademarkof NationalSemiconductor Corporation.
C1995National SemiconductorCorporation RRD-B30M16/PrintedinU.S.A.
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