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