CD74FCT521DTM

Comparators Overview

The CD74FCT521DTM is an 8-bit identity comparator manufactured by Harris Corporation, belonging to the FCT logic series. It features active low outputs indicating equality between two 8-bit inputs. The device utilizes BiCMOS technology and is housed in a 20-pin SOIC package. It operates within a standard voltage range typical for the FCT family, ensuring fast switching speeds suitable for high-performance digital systems requiring precise data comparison.

Comparators Feature Summary

• Provides active low output signals when input data words are identical
• Utilizes BiCMOS technology for high-speed operation
• Features 8-bit parallel data comparison capability

Comparators Applications

• Digital data bus monitoring
• Memory address matching circuits
• System configuration verification

Comparators Procurement Notes

Verify manufacturer origin as Harris Corporation or authorized successor entities like Texas Instruments due to corporate acquisitions. Confirm RoHS compliance status as legacy documentation may indicate non-compliance. Ensure the SOIC-20 package matches design requirements. Validate electrical specifications against current datasheets to account for potential manufacturing changes over time.

Comparators Selection Notes

Select this component for applications requiring fast, parallel 8-bit equality checks with active low signaling. Consider the FCT series speed advantages over standard HC logic. Verify power supply compatibility and ensure thermal management suits the SOIC-20 package constraints. Compare propagation delays against system timing requirements to confirm suitability for high-frequency operations.

Comparators Part Context

This part belongs to the CD74FCT521 family of identity comparators. It serves as a digital logic solution for comparing two binary numbers. The FCT series offers improved performance characteristics compared to earlier CMOS families, making it suitable for modern digital interfaces while maintaining pin compatibility with legacy designs where applicable.

Comparators Replacement Considerations

Check for equivalents from Texas Instruments which acquired Harris semiconductor logic lines. Verify pinout and electrical parameters match exactly before substitution. Consider newer generation comparators if higher integration or lower power consumption is required.