CD74AC573EX

Latches Overview

The CD74AC573EX is an octal transparent latch manufactured by Harris Corporation, belonging to the 74AC logic series. It features eight D-type latches with tri-state outputs in a non-inverting configuration. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports a propagation delay of 8.5 ns at 5 V. It utilizes a 20-pin DIP package with a 0.300-inch (7.62 mm) width, suitable for standard through-hole mounting applications requiring high-speed data storage.

Latches Feature Summary

• Octal transparent latch architecture providing eight independent D-type storage elements
• Tri-state output capability allowing bus-driven system integration
• High-speed CMOS technology ensuring rapid signal processing
• Non-inverting logic polarity for direct data path preservation

Latches Applications

• Digital data storage in microprocessor systems
• Bus interface circuits requiring temporary data holding
• Parallel-to-serial conversion stages
• Memory address latching in embedded controllers

Latches Procurement Notes

Verify manufacturer origin as Harris Corporation or L3Harris Technologies, Inc., noting historical lineage from National Semiconductor. Confirm package type matches 20-DIP specifications. Check datasheet revisions for electrical parameter consistency. Ensure component authenticity through authorized distribution channels to avoid counterfeit risks associated with legacy logic families.

Latches Selection Notes

Select this component when octal latching with tri-state outputs is required in through-hole designs. The 74AC series offers faster switching than HC variants while maintaining low power consumption. Verify voltage compatibility with the 1.5 V to 5.5 V operating range. Consider pin-out compatibility with existing PCB footprints designed for standard 20-pin DIP packages.

Latches Part Context

This part belongs to the widely adopted 74AC family of high-speed CMOS logic devices. The CD74AC573 variant specifically provides octal transparency, distinguishing it from edge-triggered flip-flops. Harris Corporation acquired relevant logic assets from National Semiconductor, influencing production history. The EX suffix typically denotes bulk packaging for industrial or commercial volume applications.

Latches Replacement Considerations

CD74HC573E serves as a compatible alternative with similar functionality but slower speed characteristics. SN74AC573N offers equivalent performance from Texas Instruments. Verify pin compatibility and electrical parameters before substitution. Ensure voltage levels match system requirements across all candidate parts.