The MC74AC161DG is an Integrated Circuit (IC) component from the 74AC series, specifically designed for digital applications. It is a 4-bit synchronous binary counter with internal logic and preloaded data inputs. Here is an overview of its key features:
1. Synchronous Operation: The MC74AC161DG operates synchronously, which means that the data inputs are updated and the counter stages advance only when a clock pulse is received.
2. Binary Counter: It acts as a 4-bit binary counter, capable of counting from 0 to 15 (2^4 - 1) in binary format. Each bit represents a count value, and the overall output provides the counter value.
3. Cascadable: The IC supports cascading, making it possible to combine multiple units together to create higher bit-count counters. When cascaded, the carry output of one counter is connected to the clock input of the next counter, allowing a wider range of counting possibilities.
4. Asynchronous Parallel Load: The MC74AC161DG features an asynchronous parallel load capability, enabling users to preset a desired count value. The parallel inputs (P0-P3) can be used to load any 4-bit value into the counter asynchronously.
5. Clear Function: It includes a clear input (CLR) to reset the counter value back to zero when required. When the CLR input is active, the counter output becomes zero regardless of other inputs
