CD74FCT521ATM

Comparators Overview

The CD74FCT521ATM is an 8-bit magnitude comparator manufactured by Harris Corporation, belonging to the FCT series. It features active low outputs for A=B, A>B, and A<B comparisons. The device operates within a supply voltage range of 4.5V to 5.5V and utilizes CMOS technology. It is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package with a width of 7.50mm. The component supports surface mount installation and functions as a single-function logic IC designed for digital comparison applications.

Comparators Feature Summary

• Performs 8-bit magnitude comparison between two binary inputs
• Provides distinct active low status outputs for equality and inequality conditions
• Utilizes FCT series CMOS technology for high-speed digital processing
• Operates reliably within standard 5V logic supply voltage ranges

Comparators Applications

• Digital data path monitoring and validation
• Address matching circuits in memory systems
• Control logic for conditional branching operations
• Error detection mechanisms in data transmission interfaces

Comparators Procurement Notes

Verify component authenticity through manufacturer documentation or authorized distributors. Confirm RoHS compliance status as indicated in official specifications. Ensure the 20-SOIC package dimensions match design constraints. Validate operating temperature ranges against environmental requirements. Cross-reference part numbers to avoid confusion with similar logic families.

Comparators Selection Notes

Select this component when precise 8-bit magnitude comparison is required in CMOS-based designs. Consider the active low output polarity for interface compatibility with downstream logic gates. Evaluate the FCT series speed characteristics against system timing requirements. Ensure the 20-pin SOIC footprint aligns with existing PCB layout specifications and assembly capabilities.

Comparators Part Context

This device belongs to the Harris Corporation FCT logic family, which bridges Fast CMOS and TTL performance levels. The CD74FCT521ATM specifically addresses digital comparison needs within this portfolio. It complements other bus drivers and transceivers in the same series, providing essential decision-making functionality for complex digital systems requiring reliable binary value assessment.

Comparators Replacement Considerations

Consult official Harris Corporation substitution guides for verified equivalents. Verify pinout compatibility before replacing with alternative manufacturers' parts. Ensure electrical parameters such as supply voltage and output drive strength remain consistent. Check package dimensions to confirm mechanical fit without redesigning the printed circuit board.