74HCT574D,652

Overview

The 74HCT574D,652 is an octal D-type flip-flop with three-state outputs manufactured by Nexperia. It belongs to the HCT logic family, ensuring compatibility with TTL inputs while operating on CMOS technology. The device features a single data input per flip-flop and includes a clock input for positive-edge triggering. It provides eight independent storage elements within a single integrated circuit package.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops
• Three-state output capability for bus-oriented systems
• Positive-edge triggered operation synchronized with clock signals
• HCT logic series ensuring direct interface with standard TTL inputs

Applications

• Parallel-to-serial data conversion circuits
• Bus-oriented memory register implementations
• General-purpose storage applications in digital systems
• Input/output buffering for microprocessor interfaces

Procurement Notes

Verify component authenticity through authorized distributors or official Nexperia channels. Confirm RoHS compliance status and check for specific packaging variants such as tape-and-reel options. Ensure the selected part number matches the required suffix for lead-free specifications. Validate datasheet revisions against current manufacturing standards before integration into production designs.

Selection Notes

Select this component when interfacing between high-speed CMOS logic and legacy TTL voltage levels is required. The HCT series offers noise immunity suitable for industrial environments. Consider the three-state outputs for efficient bus sharing without additional gating logic. Evaluate power consumption requirements relative to other logic families for optimal system efficiency.

Part Context

This component is part of the extensive 74HCT logic family produced by Nexperia. It serves as a fundamental building block for sequential logic design. The device complements other octal registers and buffers within the same product line. Its widespread adoption stems from standardized pinouts and reliable performance across various temperature ranges.

Replacement Considerations

Consider the 74HCT574D,653 as a potential substitute if available. Verify pinout compatibility and electrical characteristics match the original design requirements. Check for any differences in propagation delay or output drive strength that might affect timing constraints.