The document describes the features and characteristics of the 74F169 4-bit up/down binary synchronous counter, including synchronous counting and loading, up/down counting, modulo 16 binary counter, two count enable inputs for n-bit cascading, positive edge-triggered clock, built-in carry look-ahead capability, and presettable for programmable operation.
The Philips 74F169 is a 4-bit synchronous, presettable Modulo 16 up/down counter designed for high-speed counting applications. It features an internal carry look-ahead circuit to support n-bit synchronous applications without additional gating and eliminates output spikes associated with asynchronous counters. The device operates on a buffered clock input that triggers flip-flops on the Low-to-High transition.
| Supply Voltage | 4.5V to 5.5V |
|---|---|
| Package Type | 16-pin plastic DIP or SO |
No, the 74F169 is a discontinued part.
The direction is controlled by the Up/Down (U/D) input; a High level causes the count to increase, while a Low level causes it to decrease.
When PE is Low, the data on the D0-D3 inputs are loaded into the counter on the next rising edge of the clock.