* Y Level changes on Enable or Down Up can be made regardless of the level of the clock input Y Wide power supply range 2
* 6V Y Low quiescent supply current 80 mA maximum (74HC Series) Y Low input current 1 mA maximum Connection Diagram Dual-In-Line Package Load H H L H Enable G L L X H
74HC191
National Semiconductor
182.21 KB
Synchronous binary up/down counters.
MM54HC190 MM74HC190 MM54HC191 MM74HC191 January 1988 MM54HC190 MM74HC190 Synchronous Decade Up Down Counters with Mode Control MM54HC191 MM74HC191.
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