MM54HC190 - Up/Down Counters

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

• 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.