The HC393 devices contain eight Flip-Flops and additional gating to implement two individual 4-bit Counters in a single package. These devices comprise two independent 4-bit binary Counters each having a clear (CLR) and a Clock (CLK) input. N-bit binary Counters CAN be implemented with each package, providing the capability of divide by 256. The HC393 devices have parallel outputs from each Counter stage so that any submultiple of the input count frequency is available for system Timing signals. By Texas Instruments
Part Manufacturer Description Datasheet Samples
SNJ54HC393W Texas Instruments Dual 4-Bit Binary Counters 14-CFP -55 to 125
SNJ54HC393J Texas Instruments Dual 4-Bit Binary Counters 14-CDIP -55 to 125
SNJ54HC393FK Texas Instruments Dual 4-Bit Binary Counters 20-LCCC -55 to 125
SNJ54HC393 's PackagesSNJ54HC393 's pdf datasheet

SNJ54HC393 Pinout, Pinouts
SNJ54HC393 pinout,Pin out
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