74HC574D,652

Overview

The Nexperia 74HC574D,652 is an octal D-type flip-flop with separate inputs and output latches, manufactured in the HC logic series. It features a single SOIC-20 package containing eight independent circuits. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a propagation delay of 150 ns, a high-level output current of -7.8 mA, and a low-level output current of 7.8 mA. It supports non-inverting single-ended input and output types.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops within a single integrated circuit package.
• Separate clock and data inputs for each flip-flop, allowing individual control over data storage operations.
• Output latching capability that maintains stored data states independently of input signal changes.
• CMOS technology construction ensuring compatibility with standard digital logic interfaces.

Applications

• Parallel-to-serial data conversion systems
• General-purpose register storage applications
• Data buffering between asynchronous logic stages

Procurement Notes

This specific part number is currently marked as End-of-Life by the manufacturer. Production has ceased, and the factory is not accepting new orders. Procurement must rely on remaining stock from authorized distributors or secondary markets. Verify component authenticity and storage conditions carefully due to potential long-term warehousing. Designers should initiate immediate replacement strategies using active alternatives to ensure long-term supply chain stability.

Selection Notes

Engineers selecting this component must account for its discontinued status when planning production runs. The HC series offers standard speed and voltage characteristics suitable for general digital logic. Consider the 150 ns propagation delay for timing analysis in high-speed designs. Evaluate pin-compatible successors within the same family or newer generation variants that offer improved performance metrics while maintaining the same physical footprint and logical functionality.

Part Context

The 74HC574D,652 belongs to the widely adopted 74HC logic family, known for high-speed CMOS operation. It serves as a fundamental building block for sequential logic circuits requiring multiple bits of storage. The suffix indicates a specific tape-and-reel packaging format intended for automated surface-mount assembly processes. This variant represents a standard industry solution for octal latch applications before transitioning to newer product lines.

Replacement Considerations

74HC574D,653