UT54ACTS191 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 presettable with load c.
The UT54ACS191 and the UT54ACTS191 are synchronous 4bit reversible up-down binary counters. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instr.
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