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74LVC169
Presettable synchronous 4-bit up/down binary counter
Rev. 05 — 8 June 2009
Product data sheet
1. General description
The 74LVC169 is a synchronous presettable 4-bit binary counter which features an internal look-ahead carry circuitry for cascading in high-speed counting applications. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs (pins Q0 to Q3) change simultaneously with each other when so instructed by the count-enable (pins CEP and CET) inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock (pin CP) input triggers the four flip-flops on the LOW-to-HIGH transition of the clock.
74LVC169 Datasheet
