CD74HCT688E

Comparators Overview

The CD74HCT688E is an 8-bit magnitude comparator manufactured by Texas Instruments in the CD74HCT688 series. It operates within a supply voltage range of 4.5 V to 5.5 V and features active-low outputs for A=B identity detection. The device utilizes High-Speed CMOS technology, offering propagation delays of 9 ns and 14 ns under specified conditions. It supports through-hole mounting in a PDIP-20 package and functions across an extended temperature range from -55°C to +125°C.

Comparators Feature Summary

• Provides 8-bit magnitude comparison with active-low output indicating equality between inputs
• Utilizes high-speed CMOS technology compatible with standard LSTTL loads
• Supports cascading configurations for expanded bit-width applications

Comparators Applications

• Digital data comparison circuits
• Address decoding systems
• Cascaded arithmetic logic operations

Comparators Procurement Notes

Verify the specific suffix 'E' corresponds to the PDIP-20 through-hole package variant when ordering. Confirm RoHS compliance status as indicated in official documentation. Ensure the operating environment remains within the specified -55°C to +125°C temperature range to maintain guaranteed performance parameters.

Comparators Selection Notes

Select this component for applications requiring precise 8-bit identity checking with active-low signaling. The HCT input compatibility ensures direct interfacing with TTL logic families without additional level shifting. Consider the PDIP-20 form factor for prototyping or through-hole manufacturing requirements where surface mount options are unsuitable.

Comparators Part Context

This part belongs to the CD74HCT688 family of high-speed CMOS logic comparators. It serves as a digital solution for determining equality between two 8-bit binary words. The device integrates enable functionality and provides fanout capabilities suitable for driving multiple LSTTL loads, ensuring robust signal integrity in complex digital systems.

Comparators Replacement Considerations

CD74HC688E: HC series equivalent with similar pinout but different electrical characteristics.