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74LS163A - Synchronous 4-Bit Binary Counters

Datasheet Summary

Description

These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs.

The DM74LS161A and DM74LS163A are 4-bit binary counters.

Features

  • s Synchronously programmable s Internal look-ahead for fast counting s Carry output for n-bit cascading s Synchronous counting s Load control line s Diode-clamped inputs s Typical propagation time, clock to Q output 14 ns s Typical clock frequency 32 MHz s Typical power dissipation 93 mW Ordering Code: Order Number DM74LS161AM DM74LS161AN DM74LS163AM DM74LS163AN Package Number M16A N16E M16A N16E Package.

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Datasheet Details

Part number 74LS163A
Manufacturer Fairchild Semiconductor
File Size 103.03 KB
Description Synchronous 4-Bit Binary Counters
Datasheet download datasheet 74LS163A Datasheet
Additional preview pages of the 74LS163A datasheet.

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Full PDF Text Transcription

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DM74LS161A • DM74LS163A Synchronous 4-Bit Binary Counters August 1986 Revised April 2000 DM74LS161A • DM74LS163A Synchronous 4-Bit Binary Counters General Description These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The DM74LS161A and DM74LS163A are 4-bit binary counters. The carry output is decoded by means of a NOR gate, thus preventing spikes during the normal counting mode of operation. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating.
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