DESCRIPTION

· The 74LVC169 is a synchronous presettable 4-bit binary counter with internal look-ahead carry circuitry for high-speed counting applications.

· It features synchronous operation with all flip-flops clocked simultaneously, eliminating output counting spikes.

· The counter is fully programmable, allowing outputs to be preset to any number between 0 and its maximum count.

· It includes a buffered clock input, parallel enable input, and up/down control for counting direction.

· The look-ahead carry circuitry facilitates cascading for n-bit synchronous applications without additional gating.

FEATURES

· Synchronous operation with simultaneous clocking of all flip-flops.

· Fully programmable outputs with synchronous presetting.

· Buffered clock input triggers on LOW-to-HIGH transition.

· Parallel enable input for synchronous data loading.

· Up/down control for counting direction.

· Look-ahead carry circuitry for cascading.

· Edge-triggered J-K type flip-flops with no constraints on changing control or data input signals.

APPLICATIONS

· High-speed counting applications.

· Cascaded n-bit synchronous counters.

· Programmable counting systems.

· Directional counting systems.

· Systems requiring synchronous data loading.