CD74HCT564E

Overview

The CD74HCT564E is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the HCT logic series. It features eight independent D-type flip-flops with positive-edge triggering and inverting outputs. The device supports a supply voltage range of 4.5 V to 5.5 V and operates within a temperature range of -55°C to +125°C. Key electrical parameters include a propagation delay of 35 ns, high-level output current of -6 mA, and low-level output current of 6 mA. It utilizes TTL input levels and provides three-state outputs for bus-oriented applications.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops within a single package
• Positive-edge triggering mechanism ensures data capture on the rising clock edge
• Three-state outputs facilitate direct connection to bidirectional buses
• TTL-compatible inputs allow seamless integration with standard logic families

Applications

• Bus-oriented memory register implementations
• High-speed data storage circuits
• Parallel-to-serial conversion modules
• Digital signal processing interface buffers

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the PDIP-20 through-hole package variant rather than surface-mount options. Confirm RoHS compliance status via official documentation prior to procurement. Ensure the selected component matches the required operating temperature range specifications for the intended application environment.

Selection Notes

Select this component when an octal flip-flop with three-state outputs is required for bus systems. The HCT series compatibility ensures logical interfacing with TTL devices. Consider the 35 ns propagation delay for timing constraints. Verify that the PDIP-20 package fits the PCB layout requirements compared to SOIC alternatives.

Part Context

This part belongs to the CD74HCT564 family of high-speed CMOS logic devices. It serves as a digital storage element within larger integrated circuit systems. The device complements other Texas Instruments logic components by providing reliable data retention capabilities in complex digital architectures requiring parallel data handling.

Replacement Considerations

CD74HCT564MG4 (SOIC-20 package variant)