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MM54HC190 - Up/Down Counters

This page provides the datasheet information for the MM54HC190, a member of the MM54HC191 Up/Down Counters family.

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

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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Full PDF Text Transcription

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MM54HC190 MM74HC190 MM54HC191 MM74HC191 January 1988 MM54HC190 MM74HC190 Synchronous Decade Up Down Counters with Mode Control MM54HC191 MM74HC191 Synchronous Binary Up Down Counters with Mode Control General 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 instructed by the steering logic This mode of operation eliminates the output
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