CD74FCT374E

Overview

The CD74FCT374E is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the BiCMOS FCT logic series. It features eight independent D-type flip-flops with three-state outputs and positive-edge triggering. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a propagation delay of 7 ns, a high-level output current of -15 mA, and a low-level output current of 48 mA. It is housed in a 20-PDIP package and supports through-hole mounting.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• Three-state outputs allowing direct connection to system buses without external buffers
• Positive-edge triggering mechanism synchronized with clock signal transitions
• BiCMOS technology ensuring compatibility with TTL inputs while maintaining CMOS performance

Applications

• Parallel-to-serial data conversion circuits
• Buffering and latching operations in digital systems
• Register file implementations in microprocessor architectures
• Data acquisition systems requiring temporary storage

Procurement Notes

Verify that the specific part number matches the required package type and temperature rating. Confirm RoHS compliance status as indicated in official documentation. Ensure ordering suffixes align with intended manufacturing processes. Cross-reference datasheet revisions to confirm parameter consistency before integration into final designs.

Selection Notes

Select this component when designing systems requiring octal storage with bus-compatible outputs. Consider the 7 ns propagation delay for timing analysis. Evaluate the 4.75 V to 5.25 V operating range against available power supplies. Assess the 20-PDIP footprint against PCB layout constraints and thermal requirements.

Part Context

This component is part of the CD74FCT374 family, which includes variants such as the CD74FCT374TQCT and CY74FCT374ATSOC. These devices share similar logical functions but differ in packaging, speed characteristics, and operating temperature ranges. The E suffix typically denotes a specific package and commercial temperature grade variant within the broader FCT logic portfolio.

Replacement Considerations

Public confirmed substitute part numbers include CD74FCT374TQCT and CY74FCT374ATSOC. Verify pinout compatibility and electrical specifications before substitution. Note that package differences may require adapter solutions or PCB redesigns.