UT54ACS191E counters equivalent, synchronous 4-bit up-down binary counters.
* Single down/up count control line
* Look-ahead circuitry enhances speed of cascaded counters
* Fully synchronous in count modes
* Asynchronously pre-set.
The UT54ACS191E is a performance and voltage enhanced version of the UT54ACS191 synchronous 4-bit, reversible updown binary counter. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change.
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