DM54LS191 - Synchronous 4-Bit Up/Down Counters

Product Overview

National Semiconductor

Datasheet Details

Part number	DM54LS191
Manufacturer	National Semiconductor
File Size	125.07 KB
Description	Synchronous 4-Bit Up/Down Counters
Datasheet	DM54LS191 Datasheet
Note	This datasheet PDF includes multiple part numbers: DM54LS191, DM54LS190. Please refer to the document for exact specifications by model.
Additional preview pages of the DM54LS191 datasheet.

Product details

Description

These circuits are synchronous reversible up down counters The LS191 is a 4-bit binary counter and the LS190 is a BCD counter Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change simultaneously when so instructed by the steering logic This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters The outputs of the four master-slave flip-flops are triggered on a low-to-high level t

Features

Y Counts 8-4-2-1 BCD or binary Y Single down up count control line Y Count enable control input Y Ripple clock output for cascading Y Asynchronously presettable with load control Y Parallel outputs Y Cascadable for n-bit.

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Other Datasheets by National Semiconductor

DM54LS190 - Synchronous 4-Bit Up/Down Counters
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Published: Jun 23, 2016 |