CD74HCT564MG4

Overview

The CD74HCT564MG4 is an octal positive-edge-triggered D-type flip-flop manufactured by Texas Instruments. It belongs to the HCT logic series, featuring TTL-compatible inputs and CMOS outputs. The device provides eight independent circuits within a single package, utilizing a 20-pin SOIC surface-mount enclosure. It operates with a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of 35 ns. The outputs are three-state capable, allowing for bus-oriented connections. The component is rated for operation from -55°C to +125°C and includes inverting polarity characteristics.

Feature Summary

• Octal configuration providing eight independent positive-edge-triggered D-type flip-flops
• TTL-compatible input structure ensuring compatibility with standard logic families
• Three-state output capability facilitating direct connection to system buses
• High-speed performance with specified propagation delay characteristics

Applications

• Bus-oriented memory register implementations
• Parallel-to-serial data conversion circuits
• Shift register arrays for data storage applications
• High-speed digital signal processing interfaces

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current product status documentation to confirm availability and compliance with RoHS standards. Ensure that the SOIC-20 package dimensions match the target PCB footprint requirements. Cross-reference the datasheet revision history for any updates to electrical parameters or recommended operating conditions prior to final design approval.

Selection Notes

Select this component when an octal storage solution with high-speed operation is required. The HCT series selection ensures compatibility with TTL logic levels while maintaining CMOS power efficiency. Consider the three-state output feature if the design requires shared data lines. Verify that the thermal performance within the -55°C to +125°C range meets the environmental constraints of the intended application environment.

Part Context

This part is a member of the Texas Instruments CD74HCT family, designed for high-speed CMOS logic applications. It serves as a fundamental building block for sequential logic circuits requiring multiple storage elements. The MG4 designation indicates a lead-free, halogen-free variant compliant with specific environmental directives, packaged in a standard small-outline integrated circuit format suitable for automated surface-mount assembly processes.

Replacement Considerations

Consult official substitution guides for equivalent octal flip-flops within the same logic family. Verify pinout compatibility and electrical parameter alignment before replacing the component. Generic replacements may differ in propagation delay or output drive strength.