MM54HC191 - Synchronous Binary Up/Down Counters

Product Overview

National Semiconductor

Datasheet Details

Part number	MM54HC191
Manufacturer	National Semiconductor
File Size	202.84 KB
Description	Synchronous Binary Up/Down Counters
Datasheet	MM54HC191 Datasheet
Additional preview pages of the MM54HC191 datasheet.

Product details

Description

These high speed synchronous counters utilize advanced silicon-gate CMOS technology They possess the high noise immunity and low power consumption of CMOS technology along with the speeds of low power Schottky TTL These circuits are synchronous reversible up down counters The MM54HC191 MM74HC191 are 4-bit binary counters and the MM54HC190 MM74HC190 are BCD counters Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change simultaneously when so

Features

Y Y Y Y Level changes on Enable or Down Up can be made regardless of the level of the clock input Wide power supply range 2.
6V Low quiescent supply current 80 mA maximum (74HC Series) Low input current 1 mA maximum Connection Diagram Dual-In-Line Package Load H H L H Enable G L L X H Down Up L H X X Clock Function Count Up Count Down Load No Change u u X X Asynchronous inputs Low input to load sets QA e A QB e B QC e C and QD e D Order Number MM54HC190 191 or MM74HC190 191.

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Published: Sep 23, 2005 |