84075012A

Counter Dividers Overview

The Texas Instruments 84075012A is a SN54HC161 synchronous 4-bit binary counter housed in a 20-pin LCCC (FK) package. It operates within a military-grade temperature range of -55°C to 125°C. The device features synchronous preset capability, allowing data loading on the clock edge, and includes a ripple clock output for cascading multiple counters. It supports high-speed operation with low power consumption typical of HC logic families.

Counter Dividers Feature Summary

• Synchronous 4-bit binary counting with parallel load capability
• Military-grade temperature rating for extreme environments
• Ripple clock output facilitates multi-stage counter expansion

Counter Dividers Applications

• Military aerospace timing systems
• High-reliability industrial control counters
• Spacecraft telemetry data processing

Counter Dividers Procurement Notes

Verify the specific suffix 'FK' corresponds to the 20-pin LCCC package when sourcing. Confirm the SN54HC161 designation matches the required military temperature range specifications. Ensure compatibility with existing board layouts designed for ceramic leadless chip carrier footprints.

Counter Dividers Selection Notes

Select this component for applications requiring robust performance under wide thermal variations. The synchronous design minimizes propagation delay issues compared to asynchronous alternatives. Consider the LCCC package for superior thermal dissipation and mechanical stability in harsh operational conditions.

Counter Dividers Part Context

This part belongs to the SN54HC series, which provides high-speed CMOS logic functionality. The SN54 variant indicates qualification for extended military temperature ranges, distinguishing it from commercial SN54 variants. It serves as a fundamental building block for digital counting and frequency division circuits.

Counter Dividers Replacement Considerations

Direct substitutes include other SN54HC161 variants from Texas Instruments or equivalent parts from manufacturers like ON Semiconductor, provided they match the LCCC-20 package and military temperature ratings.