The SN74AS161DR is an Integrated Circuit (IC) component designed by Texas Instruments. It is a synchronous 4-bit binary counter that operates on positive edge-triggered clocks. The IC is widely used in various applications requiring efficient and reliable counting capabilities.
Key features of the SN74AS161DR include:
1. 4-Bit Binary Counter: The IC can count up to 15 (2^4 - 1) in binary sequence, making it suitable for various counting tasks in digital systems.
2. Synchronous Operation: The counter operates synchronously, meaning that the outputs change simultaneously with respect to the clock input transition, resulting in precise outputs.
3. Positive Edge-Triggered Clock: The counter responds to positive edge-triggered clocks, enabling consistent and accurate counting without any undesired glitches.
4. Asynchronous Reset: The IC incorporates an asynchronous reset pin (CLR) that resets the counter to zero (0000) upon activation, allowing for easy initialization.
5. Carry Output: The IC provides a carry (CARRY OUT) output pin to cascade multiple counters and create larger counting systems when additional bits are required.
6. Low Propagation Delay: The IC has low propagation delay, ensuring quick and responsive operation with minimal delay between clock transitions and output changes.
7. Wide Operating Voltage Range: The IC is designed to operate within a wide voltage range, typically from 2V to 6V, making it compatible with various power supply configurations
