CD74HC564M

Overview

The CD74HC564M is an octal D-type flip-flop manufactured by Texas Instruments in a 20-pin SOIC package. It features positive-edge triggering, three-state outputs, and an active-low clear input. The device operates within a voltage range of 2V to 6V, with typical propagation delays of 18ns at 5V. It supports bus line driving capabilities and includes buffered inputs for improved signal integrity.

Feature Summary

• Octal configuration with eight independent D-type flip-flops
• Three-state outputs for efficient bus interfacing
• Positive-edge clock triggering mechanism
• Active-low asynchronous clear function

Applications

• Bus interface circuits requiring data latching
• Digital signal processing systems
• Memory buffer applications
• Parallel-to-serial data conversion modules

Procurement Notes

Verify the specific suffix 'M' indicates the SOIC-20 package variant. Confirm RoHS compliance status through official documentation. Ensure operating temperature range matches application requirements. Check datasheet for exact electrical characteristics under intended supply voltage conditions.

Selection Notes

Select this component when octal storage with three-state output control is required. Consider the positive-edge trigger characteristic for synchronous design compatibility. Evaluate the HC series speed versus power consumption trade-offs against alternative logic families.

Part Context

Part of the CD74HCxx high-speed CMOS logic family. Offers compatible pinouts with other octal flip-flops like the CD74HC574. Designed for general-purpose digital applications requiring reliable data storage and transfer capabilities in modern electronic systems.

Replacement Considerations

CD74HC574M: Non-inverting version with similar specifications. SN74HC564N: PDIP package alternative. Verify logical inversion differences and package dimensions before substitution.