SN74LVC573APWRE4

Latches Overview

The SN74LVC573APWRE4 is an octal transparent D-type latch with 3-state outputs in a TSSOP-20 package. It operates from 1.65 V to 3.6 V and features inputs accepting voltages up to 5.5 V. Maximum propagation delay is 6.9 ns at 3.3 V. Typical output ground bounce is 2 V at VCC = 3.3 V. Latch-up performance exceeds 250 mA per JESD 17. ESD protection exceeds 2000-V HBM, 200-V CDM, and 1000-V machine model.

Latches Feature Summary

• Supports mixed-mode signal operation on all ports for 5-V input/output voltage with 3.3-V VCC.
• Ioff circuitry supports live insertion, partial power down mode, and back drive protection.
• Outputs designed specifically for driving highly capacitive or relatively low impedance loads.

Latches Applications

• Servers
• PC and notebook computers
• Network switches
• Health and fitness wearables

Latches Procurement Notes

Verify the exact part number against the manufacturer's official orderable addendum to confirm the specific suffix indicates the correct reel packaging and lead finish. Ensure the component meets RoHS requirements and matches the specified thermal resistance metrics for the TSSOP-20 package during integration planning.

Latches Selection Notes

Select this device when implementing buffer registers, I/O ports, bidirectional bus drivers, or working registers requiring high-speed data retention. The wide operating voltage range allows for down voltage translation, while the 5.5 V tolerant inputs facilitate interface between different logic families without additional level shifting components.

Latches Part Context

This component belongs to the SN74LVC573A family of octal transparent D-type latches. It is manufactured by Texas Instruments using CMOS technology. The device is designed for 1.65-V to 3.6-V VCC operation, distinguishing it from the SN54LVC573A which targets 2.7-V to 3.6-V applications.

Latches Replacement Considerations

SN74LVC573APWR

Latches FAQ

How does the Ioff feature benefit system design?

The Ioff feature disables the outputs when the device is powered down, preventing damaging current backflow through the device. This supports live insertion and partial power-down modes.

What is the maximum input voltage tolerance?

The inputs accept voltages up to 5.5 V, allowing the device to support mixed-mode signal operation even when VCC is as low as 1.65 V.