74F191 counter equivalent, up/down binary counter.
* High speed
–125MHz typical fMAX
* Synchronous, reversible counting
* 4-Bit binary
* Asynchronous parallel load capability
* Cascada.
DIRECTION CONTROL U/D ENABLE CLOCK CE CP RC U/D CE CP RC U/D CE CP RC
a. N-Stage Counter Using Ripple Clock
DIRECTION C.
The 74F191 is a 4-bit binary counter. It contains four edge-triggered master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operations. Asynchronous parallel load capabi.
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