IDT74FCT191 counter equivalent, fast cmos up/down binary counter.
* IDT54/74FCT191 equivalent to FAST™ speed
* IDT54/74FCT191A 35% faster than FAST
* Equivalent to FAST output drive over full temperature
and voltage supply .
The IDT54/74FCT191 and IDT54/74FCT191A are reversible modulo-16 binary counters, featuring synchronous counting and asynchronous presetting and are built using an advanced dual metal CMOS technology. The preset feature allows the IDT54/74FCT191 and .
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