CD54HC688F3A

Comparators Overview

The CD54HC688F3A is an 8-bit magnitude comparator from the HC/UH series, manufactured by Harris Corporation. It features active low outputs indicating equality (A=B) between two 8-bit binary words. The device utilizes CMOS technology and is housed in a ceramic DIP-20 package. It operates within a supply voltage range of 2V to 6V and supports a maximum frequency of 20 MHz at nominal supply. The component is rated for military-grade temperatures ranging from -55°C to 125°C.

Comparators Feature Summary

• Provides active low output indication when two 8-bit binary inputs are equal
• Utilizes high-speed CMOS technology for efficient power consumption
• Features ceramic glass-sealed packaging for environmental durability

Comparators Applications

• Digital comparison circuits requiring equality detection
• Military and aerospace electronic systems
• Industrial control logic interfaces

Comparators Procurement Notes

Verify component authenticity through manufacturer documentation or authorized channels. Confirm package integrity and pin configuration match CDIP-20 specifications. Ensure temperature ratings align with operational requirements. Check for lead-free compliance status if required by specific project standards. Validate datasheet revisions against current manufacturing releases.

Comparators Selection Notes

Select this component for applications requiring precise 8-bit equality comparison in harsh environments. Consider the HC/UH series compatibility for system integration. Evaluate the ceramic package benefits for radiation or thermal stability needs. Compare performance metrics against alternative comparators if higher speed or different output polarities are required.

Comparators Part Context

This part belongs to the Harris Corporation 54HC series of digital logic components. The 54-series designation typically indicates military-grade quality and extended temperature ranges. The HC suffix denotes High-speed CMOS technology, offering faster switching speeds compared to standard 74HC counterparts while maintaining low power consumption.

Comparators Replacement Considerations

CD54HC688N

Comparators FAQ

What is the primary function of the CD54HC688F3A?

It functions as an 8-bit magnitude comparator that outputs a low signal when two 8-bit binary numbers are equal.

What type of output does this comparator provide?

The device provides an active low output specifically for the A=B condition.