74ACT161SJ

Counter Dividers Overview

The onsemi MC74ACT161SJ is a high-speed synchronous modulo-16 binary counter housed in a 16-Lead Small Outline Package (SOP). It features synchronous presettable loading, asynchronous master reset, and two count enable inputs for versatile multistage configurations. The device operates within a supply voltage range of 4.5V to 5.5V and supports a typical count rate of 125 MHz. Outputs are capable of sourcing and sinking 24 mA, while the ACT logic family ensures TTL-compatible input thresholds.

Counter Dividers Feature Summary

• Synchronous counting and parallel data loading capabilities
• Asynchronous Master Reset input that overrides all other functions
• TTL-compatible input voltage levels for direct interface with standard logic
• High-speed synchronous expansion via Terminal Count output

Counter Dividers Applications

• Programmable frequency dividers
• Synchronous multistage counter systems
• Digital timing and sequencing circuits

Counter Dividers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status as required by project specifications. Review datasheet electrical characteristics against system operating conditions. Ensure proper handling procedures are followed due to static sensitivity. Validate package dimensions against PCB footprint requirements prior to integration.

Counter Dividers Selection Notes

Select this component when synchronous operation with TTL-compatible inputs is required. The 125 MHz maximum count rate suits high-frequency digital applications. Consider the 16-SOP package for surface-mount assembly constraints. Evaluate power dissipation limits under maximum load conditions. Verify availability status as manufacturing lifecycle stages may impact long-term supply.

Counter Dividers Part Context

This device belongs to the 74ACT series of high-speed CMOS logic components originally developed by Fairchild Semiconductor. The 74ACT161 specifically implements a 4-bit synchronous binary counter architecture. It shares functional compatibility with other members of the AC/ACT logic families while offering improved speed performance over standard LS counterparts.

Counter Dividers Replacement Considerations

CD74ACT161M and CD74ACT161M96 from Texas Instruments are documented as similar replacement options.