DM74LS169AN Datasheet PDF - Fairchild

●General Description

●This synchronous presettable counter features an internal carry look-ahead for cascading in high-speed counting applications. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs all change at the same time when so instructed by the count-enable inputs and internal gating. This mode of operation helps eliminate the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four master-slave flip-flops on the rising edge of the clock waveform.

●Features

●Fully synchronous operation for counting and programming.

●Internal look-ahead for fast counting.

●Carry output for n-bit cascading.

●Fully independent clock circuit