HD74LS162A - Renesas

HD74LS162A Synchronous Decade Counter

HD74LS162A Synchronous Decade Counter (synchronous clear) REJ03D0446–0300 Rev.3.00 Jul.15.2005 This synchronous decade counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs changes coincident with each other when so.

Features

an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs changes coincident with each other when so instructed by the count-enable inputs and internal gating. This mode is operation eliminates the output counting spikes that 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. This counter is fully programmable; that is, the outputs may be prese.