CD74HCT85MT

Overview

The CD74HCT85MT is a high-speed CMOS logic device functioning as a 4-bit magnitude comparator. Manufactured by Texas Instruments, it operates within an extended temperature range of -55°C to 125°C and is housed in a 16-pin SOIC (D) package. The component provides true outputs for comparing two 4-bit binary words, featuring active high output signals. It is designed for applications requiring reliable digital comparison with standard HCT logic compatibility.

Feature Summary

• High-speed CMOS technology implementation
• Four-bit parallel magnitude comparison capability
• Extended industrial temperature operation range
• Standard 16-pin surface-mount packaging

Applications

• Digital data comparison circuits
• Address decoding systems
• Control logic interfaces
• Industrial instrumentation signal processing

Procurement Notes

Verify the complete part number including the MT suffix to ensure correct tape-and-reel packaging and specific manufacturer lot codes. Confirm that the required operating temperature range aligns with the specified -55°C to 125°C limit for your application environment. Cross-reference datasheet revisions to ensure pinout and electrical characteristics remain consistent with current design requirements.

Selection Notes

Select this component when a 4-bit magnitude comparison function is required within HCT logic families. Ensure voltage levels match standard 5V HCT specifications. Consider the SOIC package dimensions for PCB layout constraints. Verify that the propagation delay characteristics meet the timing requirements of the target digital system architecture.

Part Context

This device belongs to the CD74HCT series of high-speed CMOS logic components from Texas Instruments. It serves as a specialized comparator within the broader family of digital logic ICs, providing dedicated arithmetic comparison functionality rather than general-purpose logic gates.

Replacement Considerations

Check for direct equivalents such as the CD74HCT85M variant, noting differences in packaging format. Verify functional compatibility with other 4-bit comparators from different manufacturers if supply chain adjustments are necessary.