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74LS191 - Synchronous 4-Bit Up/Down Counter

Fairchild Semiconductor

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Datasheet Details

Part number	74LS191
Manufacturer	Fairchild ↗ Semiconductor
File Size	70.93 KB
Description	Synchronous 4-Bit Up/Down Counter
Datasheet	74LS191-FairchildSemiconductor.pdf

74LS191 Product details

Description

The DM74LS191 circuit is a synchronous, reversible, up/ down counter.

Features

s Counts binary s Single down/up count control line s Count enable control input s Ripple clock output for cascading s Asynchronously presettable with load control s Parallel outputs s Cascadable for n-bit.

📁 74LS191 Similar Datasheet

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Published: Sep 15, 2025 |