SN74HC163N


Integrated Circuit


SN74HC163N


SN54HC163, SN74HC163 4-Bit Synchronous Binary Counters


These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The ’HC163 devices are 4-bit binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when instructed by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output counting spikes normally associated with synchronous (ripple-clock) counters. A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform.


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  1. SN54HC163, SN74HC163 4-Bit Synchronous Binary Counters