Synchronous 4-bit Binary Counters - National Semiconductor

These synchronous, presettable Counters 54LS161A DM54LS161A DM74LS161A 54LS163A DM54LS163A DM74LS163A feature an inter- nal carry look-ahead for application in high-speed counting designs. The LS161A and LS163A are 4-bit binary Counters The carry output is decoded by means of a NOR Gate thus preventing spikes during the normal counting mode of oper- ation. Synchronous operation is provided by having all flip- flops clocked simultaneously so that the outputs change co- incident with each other when so instructed by the count- enable inputs and internal gating. This mode of operation eliminates the output counting spikes which are normally associated with asynchronous (ripple clock) Counters A buffered Clock input triggers the four Flip-Flops on the rising (positive-going) edge of the Clock input waveform. By National Semiconductor Corporation
DM54LS161A 's PackagesDM54LS161A 's pdf datasheet

DM54LS161A Pinout, Pinouts
DM54LS161A pinout,Pin out
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