CD74FCT2374ATQM

Overview

The CD74FCT2374ATQM is an octal D-type flip-flop manufactured by Harris Corporation, belonging to the FCT series. It features a PDSO-20 plastic small outline package with 20 terminals. The device operates within a supply voltage range of 4.5 V to 5.5 V, with a nominal rating of 5 V. It supports a wide operating temperature range from -40 °C to 85 °C. Key electrical parameters include a propagation delay of 5.2 ns at nominal supply and a load capacitance of 50 pF. The outputs provide three-state capability, and the maximum output current (Iol) is specified at 0.012 A.

Feature Summary

• Octal D-type flip-flop configuration for high-density data storage applications
• Three-state outputs facilitate direct connection to system buses without additional buffering
• Bus hold input functionality eliminates the requirement for external pull-up resistors
• CMOS technology ensures low power consumption while maintaining fast switching speeds

Applications

• Parallel data latching in high-speed digital communication interfaces
• Register stages in microprocessor-based control systems
• Data acquisition systems requiring precise timing and storage
• Industrial automation controllers managing multiple I/O channels

Procurement Notes

Verify that the specific suffix ATQM corresponds to the exact package variant and tape-and-reel quantity intended for your assembly process. Confirm RoHS compliance status as indicated in official documentation, noting that some sources list this component as non-compliant. Ensure the manufacturer designation aligns with Harris Corporation or its successor entities to guarantee authenticity and traceability of the silicon die.

Selection Notes

Select this component when an octal D-latch with three-state outputs is required in a compact surface-mount form factor. The FCT series offers compatibility with standard CMOS logic levels while providing faster performance than older TTL equivalents. Consider the 5.2 ns propagation delay and 50 pF load capability for signal integrity analysis. Verify that the 20-pin SOP package fits the available PCB footprint constraints compared to larger DIP alternatives.

Part Context

This part belongs to the FCT (Fast CMOS Technology) family, designed to bridge the performance gap between traditional TTL and pure CMOS logic families. Harris Corporation developed these components to offer higher speed and lower power dissipation. The CD74FCT2374 specifically provides eight independent D-type flip-flops, making it suitable for applications needing parallel data retention with controlled output impedance.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with Intersil or Renesas datasheets for equivalent FCT-series octal flip-flops if Harris inventory is unavailable.