74VHC573SJ

Latches Overview

The Fairchild Semiconductor 74VHC573SJ is an octal D-type latch featuring three-state outputs, fabricated using advanced silicon gate CMOS technology. It operates within a voltage range of 2V to 5.5V and delivers high-speed performance with typical propagation delays of 4.5ns at 5V supply. The device maintains low power dissipation with a maximum static current of 4μA. It includes power-down protection on inputs and offers high noise immunity. The component is housed in a 20-SOP package and supports interface between 5V and 3V systems.

Latches Feature Summary

• Octal D-type latch architecture with three-state output capability
• Advanced silicon gate CMOS fabrication for high speed and low power
• Power-down protection provided on all input pins
• High noise immunity with balanced propagation delays

Latches Applications

• Data register applications requiring parallel-to-serial conversion
• Interface circuits connecting 5V logic systems to 3V logic systems
• Bus-oriented memory mapping and I/O control
• Temporary storage of digital data in microprocessor-based systems

Latches Procurement Notes

Verify the manufacturer designation carefully, as this part number is associated with Fairchild Semiconductor but also appears in listings under onsemi due to corporate acquisition history. Confirm RoHS compliance status and specific lead-free ordering suffixes directly with authorized distributors or the manufacturer's official documentation before procurement. Ensure the package type matches the required SOP-20 footprint for your design.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for bus-driven applications. It is suitable for designs needing fast switching speeds and low standby power consumption within the 2V to 5.5V operating range. Consider its compatibility with standard logic families and its ability to handle input voltages up to 7V for robust system interfacing.

Latches Part Context

This component belongs to the 74VHC series of high-speed CMOS logic devices. The 74VHC573 specifically functions as an octal D-type latch, distinct from flip-flops like the 74VHC574 which are clock-triggered. It shares pinout compatibility with other standard logic families, facilitating easier integration into existing circuit designs that utilize similar latch architectures.

Latches Replacement Considerations

Check for direct substitutes such as MC74VHC573 variants from onsemi, ensuring identical pinout and electrical characteristics. Verify if alternative manufacturers offer equivalent octal latches with three-state outputs in a 20-SOP package.