CD74HCT534E

Overview

The CD74HCT534E is an octal D-type flip-flop with inverting outputs and three-state control, belonging to the HCT CMOS logic series. It features eight positive-edge-triggered D-type flip-flops with independent data inputs and inverted outputs. The device includes a three-state output control mechanism for bus driving applications. It operates within a supply voltage range of 4.5V to 5.5V and supports a wide operating temperature range from -55°C to 125°C. The component is housed in a 20-pin DIP package.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops
• Inverted outputs suitable for direct interface with logic systems
• Three-state output control enables efficient bus-oriented architectures
• HCT technology ensures compatibility with standard TTL logic levels

Applications

• Bus-oriented memory register implementations
• 8-bit shift register configurations
• Parallel-to-serial data conversion circuits
• High-speed timing and control logic systems

Procurement Notes

Verify the specific manufacturer source, as Harris Corporation assets are often managed by Rochester Electronics. Confirm RoHS compliance status, as older HCT variants may not meet current environmental standards. Ensure the DIP package variant matches the required through-hole mounting specifications for the target application design.

Selection Notes

Select this component when an octal storage element with inverted outputs and high-speed switching is required. The HCT series offers superior noise immunity compared to standard HC logic while maintaining TTL input compatibility. Consider the three-state feature for managing multiple devices on shared data lines effectively.

Part Context

This part belongs to the widely adopted 74HCT family of high-speed CMOS logic devices. These components bridge the gap between older TTL standards and modern CMOS efficiency. The octal flip-flop architecture provides substantial data storage capacity within a single integrated circuit package, simplifying board layout for complex digital systems.

Replacement Considerations

CD74HC534E (Non-inverting outputs), SN74HCT534N (Texas Instruments equivalent), MC74HCT534AN (OnSemi equivalent). Verify pinout compatibility and electrical characteristics before substitution.