74HC193 counter equivalent, presettable synchronous 4-bit binary up/down counter.
* Input levels:
* For 74HC193: CMOS level
* For 74HCT193: TTL level
* Synchronous reversible 4-bit binary counting
* Asynchronous parallel load
* .
The 74HC193; 74HCT193 is a 4-bit synchronous binary up/down counter. Separate up/down clocks, CPU and CPD respectively, simplify operation. The outputs change state synchronously with the LOW-to-HIGH transition of either clock input. If the CPU clock.
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