SN74LVC373AZQNR

Latches Overview

The SN74LVC373AZQNR is an octal transparent D-type latch with 3-state outputs from the SNx4LVC373A series. It operates from a supply voltage of 1.65 V to 3.6 V and features inputs that accept voltages up to 5.5 V, supporting mixed-mode signal operation. The device provides a maximum propagation delay of 6.8 ns at 3.3 V and includes Ioff circuitry for partial-power-down mode. It offers ESD protection exceeding 2000 V via the human-body model and latch-up performance exceeding 250 mA per JESD 17 standards.

Latches Feature Summary

• Operates within a wide supply voltage range of 1.65 V to 3.6 V
• Inputs are tolerant to 5.5 V for mixed-mode signal compatibility
• Ioff feature prevents back-drive current during power-down states
• High ESD protection ratings across multiple testing models

Latches Applications

• Network switches
• TV set-top boxes
• Motor drives
• PCs and notebooks

Latches Procurement Notes

Verify the ZQNR suffix indicates automotive or specific qualification requirements distinct from standard commercial variants. Confirm package availability matches the required footprint. Check for RoHS compliance status in the latest orderable addendum. Ensure the component meets MIL-PRF-38535 specifications if military-grade reliability is mandated for the application.

Latches Selection Notes

Select this component when designing systems requiring low-voltage operation down to 1.65 V while maintaining 5-V input tolerance. The high drive capability supports bus-interface applications. Consider the thermal resistance values for PCB layout planning. Verify that the operating temperature range aligns with the environmental conditions of the target deployment.

Latches Part Context

This part belongs to the SNx4LVC373A family of octal transparent D-type latches. The family utilizes CMOS technology to provide balanced output drive and low power consumption. The ZQNR designation typically signifies a specific packaging and qualification variant within the broader LVC logic portfolio designed for robust digital data retention.

Latches Replacement Considerations

SN74LVC373ADBR

Latches FAQ

How does the Ioff feature function?

The Ioff circuitry disables the outputs when VCC is 0 V, preventing damaging current backflow through the device during partial-power-down modes.

What is the maximum input voltage allowed?

The inputs can accept voltages up to 5.5 V, allowing compatibility with 5-V devices even when the supply voltage is lower.