SN74LVC573AZQNR

Latches Overview

The SN74LVC573AZQNR is an octal transparent D-type latch with three-state outputs from the Texas Instruments LVC series. It operates within a supply voltage range of 1.65 V to 3.6 V and features inputs tolerant to 5.5 V for mixed-mode signal support. The device provides high drive capability, supporting up to 24 mA output current at 3.3 V, with propagation delays as low as 6.9 ns at 3.3 V. It includes Ioff circuitry for partial power-down protection and meets JESD 17 latch-up standards exceeding 250 mA.

Latches Feature Summary

• Supports mixed-mode signal operation allowing 5-V input/output voltage compatibility with 3.3-V VCC
• Includes Ioff circuitry to prevent damaging backflow currents during partial power-down or live insertion
• Features robust latch-up performance exceeding 250 mA per JESD 17 specifications

Latches Applications

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

Latches Procurement Notes

Verify the ZQNR suffix indicates automotive qualification and Microstar Junior package configuration. Confirm RoHS compliance and lead finish details against the latest TI orderable addendum. Ensure the specific temperature grade matches system requirements. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement.

Latches Selection Notes

Select this component for designs requiring high-speed data latching in low-voltage environments. The 5.5-V tolerant inputs facilitate interface between different logic voltage domains without external level shifters. The three-state outputs allow direct connection to bus systems. Verify that the thermal characteristics of the Microstar Junior package suit the PCB layout constraints.

Latches Part Context

This part belongs to the SNx4LVC573A family of octal transparent D-type latches. It shares functional similarities with standard industrial variants but incorporates specific packaging and qualification attributes indicated by the suffix. The LVC series is designed for low-voltage CMOS applications requiring high drive strength and fast switching speeds.

Latches Replacement Considerations

SN74LVC573ADWR

Latches FAQ

How does the Ioff feature function?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device when VCC is 0 V.

What is the maximum input voltage tolerance?

The inputs accept voltages up to 5.5 V, enabling support for mixed-mode signal operations on all ports.