74AC161SJ

Counter Dividers Overview

The Fairchild Semiconductor 74AC161SJ is a synchronous 4-bit binary counter implemented in high-speed silicon-gate CMOS technology. It features parallel load capability, asynchronous reset, and internal carry look-ahead for high-speed cascading applications. The device operates on a positive-edge triggered clock input and includes count-enable controls to manage counting sequences precisely.

Counter Dividers Feature Summary

• Synchronous operation with all flip-flops clocked simultaneously to eliminate output counting spikes
• Internal carry look-ahead logic designed for fast counting applications
• Parallel load control line allows direct presetting of data inputs
• Asynchronous reset function for immediate clearing of counter outputs

Counter Dividers Applications

• High-speed binary counting designs requiring precise timing
• Cascaded multi-stage counter systems utilizing internal carry look-ahead
• Digital frequency division circuits within larger logic systems

Counter Dividers Procurement Notes

Verify the specific manufacturer designation as sources indicate potential discrepancies between Fairchild and onsemi branding for this part number. Confirm package type and voltage specifications against official datasheets prior to integration. Ensure compatibility with system logic levels and power supply requirements.

Counter Dividers Selection Notes

Select this component for applications requiring synchronous binary counting with minimal propagation delay. The internal carry look-ahead makes it suitable for high-frequency designs compared to ripple counters. Verify that the asynchronous reset behavior aligns with system safety requirements.

Counter Dividers Part Context

This component belongs to the 74AC series of logic integrated circuits, which are based on advanced CMOS technology offering higher speed than standard LS counterparts while maintaining CMOS noise immunity. It serves as a fundamental building block for digital state machines and timing control units.