onsemi

MC74ACT161DG

MC74ACT161DG Description

The MC74ACT161DG from onsemi is a high-performance 4-bit synchronous binary counter designed for precision timing and counting applications. Housed in a 16-SOIC package, this IC operates within a 4.5V to 5.5V supply range, making it ideal for 5V TTL-compatible systems. With a count rate of 125 MHz, it delivers fast, reliable performance in high-speed digital circuits. The device features synchronous operation, ensuring all outputs transition simultaneously with the clock signal, while its asynchronous reset allows immediate clearing of the counter.

MC74ACT161DG Features

• 4-bit binary counter with up-counting direction and positive-edge triggering.
• Synchronous timing for precise output transitions, reducing skew in critical applications.
• Asynchronous reset for instant counter clearing without clock dependency.
• 125 MHz maximum count rate, enabling high-frequency operation.
• 5V supply compatibility (4.5V–5.5V) with TTL-level inputs for seamless integration.
• ROHS3 compliant and REACH unaffected, meeting environmental regulations.
• Surface-mount (SOIC-16) packaging, suitable for compact PCB designs.
• Last Time Buy status, indicating limited availability—ideal for legacy system support.

MC74ACT161DG Applications

This counter is well-suited for:

• High-speed frequency dividers in communication systems.
• Digital clocks and timers requiring synchronous counting.
• Industrial control systems where precise event counting is critical.
• Microcontroller-based designs needing external counting logic.
• Test and measurement equipment demanding reliable, high-frequency operation.

Conclusion of MC74ACT161DG

The MC74ACT161DG stands out for its high-speed performance, synchronous operation, and 5V compatibility, making it a robust choice for digital counting applications. Its asynchronous reset and 125 MHz capability provide flexibility in time-critical systems. While classified as Last Time Buy, it remains a dependable solution for legacy or low-volume production needs. Engineers should consider this IC for designs requiring fast, accurate counting with minimal propagation delay.