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54AC169

National Semiconductor
Part Number 54AC169
Manufacturer National Semiconductor
Description 4-Stage Synchronous Bidirectional Counter
Published Feb 15, 2007
Detailed Description www.DataSheet4U.com 54AC169 • 54ACT169 4-Stage Synchronous Bidirectional Counter July 1998 54AC169 • 54ACT169 4-Stage...
Datasheet PDF File 54AC169 PDF File

54AC169
54AC169

Overview
www.
DataSheet4U.
com 54AC169 • 54ACT169 4-Stage Synchronous Bidirectional Counter July 1998 54AC169 • 54ACT169 4-Stage Synchronous Bidirectional Counter General Description The ’AC/’ACT169 is fully synchronous 4-stage up/down counter.
The ’AC/’ACT169 is a modulo-16 binary counter.
It features a preset capability for programmable operation, carry lookahead for easy cascading and a U/D input to control the direction of counting.
All state changes, whether in counting or parallel loading, are initiated by the LOW-to-HIGH transition of the Clock.
n n n n n n Synchronous counting and loading Built-In lookahead carry capability Presettable for programmable operation Outputs source/sink 24 mA ’ACT has TTL-compatible inputs Standard Microcircuit Drawing (SMD) 5962-91603 Features n ICC reduced by 50% Logic Symbols Pin Names CEP CET CP P0–P3 PE U/D DS100276-1 Description Count Enable Parallel Input Count Enable Trickle Input Clock Pulse Input Parallel Data Inputs Parallel Enable Input Up-D...


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