CD74AC374E

Overview

The CD74AC374E is an octal D-type flip-flop manufactured by Harris Corporation, belonging to the AC logic series. It features eight independent D-type flip-flops with three-state outputs, housed in a 20-pin PDIP package. The device operates on a supply voltage range of 2 V to 6 V and supports through-hole mounting. It exhibits a propagation delay of 135 ns, with high-level and low-level output currents of -24 mA and 24 mA respectively. The component functions within a temperature range of -55 °C to +125 °C.

Feature Summary

• Contains eight independent D-type flip-flops for parallel data storage
• Provides three-state outputs for effective bus line driving
• Supports CMOS input compatibility with non-inverting logic polarity

Applications

• Parallel data storage in digital systems
• Bus-oriented memory register applications
• Clock domain crossing circuits

Procurement Notes

Verify manufacturer origin as Harris Corporation or authorized successor entities due to historical production changes. Confirm RoHS compliance status via official documentation, as legacy variants may differ. Ensure the PDIP-20 package matches board layout requirements. Cross-reference datasheet revisions to confirm electrical characteristics align with current design specifications before integration.

Selection Notes

Select this component when eight-bit parallel storage with tri-state capability is required. The AC series offers specific speed and power trade-offs compared to HC or ACT families. Verify that the 2V to 6V operating range suits the system power rails. Consider the 135 ns propagation delay for timing constraints in the target application circuit.

Part Context

This part belongs to the CD74AC374 family of octal flip-flops. It shares functional similarities with other 74AC series devices but is distinct from latches like the CD74AC373. The 'E' suffix typically denotes a specific package variant, often PDIP, produced under the Harris Corporation brand prior to industry consolidations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.