CD54HC4520F3A

Counter Dividers Overview

The CD54HC4520F3A is a dual binary up-counter from the High-Speed CMOS Logic family, housed in a 16-lead Ceramic Dual In-Line Package (CDIP). It operates within a supply voltage range of 2V to 6V and supports an extended temperature range of -55°C to 125°C. The device contains two independent internally synchronous 4-stage counters utilizing D-type flip-flops with interchangeable clock and enable lines for positive or negative edge triggering.

Counter Dividers Feature Summary

• Supports positive or negative edge triggering via interchangeable clock and enable lines
• Features synchronous internal carry propagation for cascading applications
• Provides direct compatibility with standard LSTTL loads

Counter Dividers Applications

• Military and defense electronic systems requiring wide temperature tolerance
• Cascaded counter configurations for frequency division
• High-speed digital logic circuits operating at elevated temperatures

Counter Dividers Procurement Notes

Verify the complete part number including suffixes when ordering. Confirm that the specific variant matches the required military-grade specifications and ceramic packaging requirements. Ensure compliance with handling procedures due to electrostatic discharge sensitivity.

Counter Dividers Selection Notes

Select this component for designs requiring dual independent counters in a ruggedized ceramic package. The HC series offers wide voltage operation compared to HCT variants. Verify pinout compatibility with existing layouts as it differs from the BCD CD74HC4518.

Counter Dividers Part Context

This component belongs to the Texas Instruments CD54HC4520 family, designated for military and defense applications. It is distinct from the commercial CD74HC4520 series but shares identical logical functionality. The device is QML certified for use in demanding environments.

Counter Dividers Replacement Considerations

The CD74HC4520E serves as the commercial equivalent. For BCD counting functions, the CD74HC4518 provides similar architecture but requires different logic implementation.