74HC377N,652

Overview

The NXP 74HC377N,652 is an octal D-type flip-flop featuring positive-edge triggering and three-state outputs. It belongs to the HC logic family, operating within a supply voltage range of 2V to 6V. The device contains eight independent D-type flip-flops with data enable functionality, housed in a 20-pin PDIP package. It supports a maximum frequency of 24MHz at nominal supply and operates across a temperature range of -40°C to +125°C.

Feature Summary

• Octal architecture providing eight independent D-type flip-flops per single chip
• Positive-edge clock triggering mechanism for precise timing control
• Three-state output capability allowing direct bus line interfacing
• Data enable input function controlling state retention or update

Applications

• Parallel-to-serial data conversion circuits
• Register storage elements in digital systems
• Bus interface buffering applications
• Timing delay generation networks

Procurement Notes

Verify the specific ordering code suffix matches the required package type and lead time requirements. Confirm RoHS compliance status and moisture sensitivity level ratings prior to integration. Ensure the supplier provides valid traceability documentation for automotive or industrial qualification standards if applicable to the final design environment.

Selection Notes

Select this component when designing systems requiring parallel data latching with controlled output impedance. The HC series offers standard CMOS performance suitable for general-purpose logic applications. Consider the three-state feature for shared bus architectures where multiple devices must share signal lines without electrical conflict during inactive states.

Part Context

This part is a member of the widely adopted 74HC logic family, known for high-speed operation and wide supply voltage compatibility. It serves as a fundamental building block for sequential logic designs. The PDIP variant facilitates prototyping and through-hole manufacturing processes commonly used in educational and industrial equipment development.

Replacement Considerations

Compatible substitutes include the 74HCT377 for TTL-compatible input levels and the 74LS377 for legacy low-power Schottky requirements. Verify pinout compatibility and electrical characteristics against the original design specifications before substitution.