74HCT574N,652

Overview

The NXP 74HCT574N,652 is an octal D-type flip-flop featuring positive edge triggering and three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V. The device utilizes a 20-pin PDIP package for through-hole mounting. Maximum propagation delay is specified at 32 ns under a 4.5 V supply with 50 pF load capacitance. Operating temperature ranges from -40 °C to +125 °C.

Feature Summary

• Octal D-type flip-flop architecture with eight independent storage elements
• Positive edge-triggered data capture mechanism
• Three-state output capability for bus-oriented systems
• CMOS HCT logic family compatibility

Applications

• Parallel-to-serial data conversion circuits
• Bus driver applications requiring tri-state control
• General-purpose register implementations in digital systems
• Memory interface buffering

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm package type and marking details. Ensure the component meets required RoHS compliance standards for the target application. Confirm that the manufacturer designation aligns with current corporate branding following the separation of the standard product business.

Selection Notes

Select this component when an octal D-type flip-flop with three-state outputs is required for through-hole PCB designs. The HCT logic series ensures TTL-compatible input levels while maintaining CMOS power efficiency. Verify that the 20-pin PDIP footprint matches the schematic layout constraints and thermal requirements of the system design.

Part Context

This component belongs to the 74HCT logic family, designed for high-speed CMOS operation with TTL-compatible inputs. The 74HCT574 variant specifically provides octal storage with tri-state outputs. Manufacturing responsibilities for this part number transitioned to Nexperia following the divestiture of NXP's Standard Product business.

Replacement Considerations

• 74HC574N,652
• MM74HCT574WM