CD74HC688PWR

Overview

The CD74HC688PWR is an 8-bit magnitude comparator from Texas Instruments, housed in a 20-pin TSSOP package. It operates on a supply voltage range of 2 V to 6 V and supports surface-mount installation. The device features active low outputs and provides propagation delays of 210 ns, 42 ns, and 36 ns. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Performs 8-bit magnitude comparison with active low output indication
• High-speed CMOS technology for efficient digital logic operations
• Compatible with standard 2 V to 6 V power supply ranges

Applications

• Digital data validation circuits
• Address decoding systems
• Error detection logic in data transmission

Procurement Notes

Verify the specific suffix PWR indicates the TSSOP-20 package and tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure thermal management aligns with the specified operating temperature range during PCB layout design.

Selection Notes

Select this component when an 8-bit identity or magnitude comparison function is required in a compact surface-mount form factor. The HC series offers high-speed performance suitable for general-purpose digital applications. Verify that the 2 V to 6 V operating voltage matches the system power rails.

Part Context

This part belongs to the Texas Instruments SN74HC688 family of high-speed CMOS logic comparators. It serves as a digital integrated circuit designed for comparing two 8-bit binary words. The device is widely used in industrial and consumer electronics requiring reliable digital comparison capabilities.

Replacement Considerations

SN74HC688PWRE4 and SN74HC688DWRG4 are verified substitutes within the same family offering identical logical functionality.