SN74LVC573ADBRG4

Latches Overview

The SN74LVC573ADBRG4 is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage of 1.65 V to 3.6 V and accepts input voltages up to 5.5 V, supporting mixed-mode signal operation. The device features a maximum propagation delay of 6.9 ns at 3.3 V and provides high drive current capability of 24 mA. It includes Ioff support for partial power-down mode and back-drive protection. The component is housed in a 20-pin SSOP package and functions within an operating temperature range of -40°C to 85°C.

Latches Feature Summary

• Operates from 1.65 V to 3.6 V with inputs accepting voltages up to 5.5 V
• Features 3-state outputs designed for driving highly capacitive or low-impedance loads
• Includes Ioff circuitry to support live insertion, partial power-down, and back-drive protection
• Provides latch-up performance exceeding 250 mA per JESD 17 standards

Latches Applications

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

Latches Procurement Notes

Verify the specific ordering suffix 'G4' corresponds to lead-free and RoHS-compliant manufacturing requirements as defined in the manufacturer's documentation. Confirm that the SSOP-20 package dimensions align with the target PCB footprint constraints. Ensure the selected supplier sources directly from authorized channels to guarantee authenticity and traceability of the production data.

Latches Selection Notes

Select this component when designing systems requiring octal latching with 3-state bus interfacing capabilities. It is suitable for applications needing voltage translation between 5-V logic and lower voltage cores. Consider the 24 mA output drive strength for driving multiple loads or low-impedance buses. Verify that the 1.65 V minimum supply voltage meets the lowest system rail requirements.

Latches Part Context

This part belongs to the SNx4LVC573A family of octal transparent D-type latches. The 'SN74' prefix indicates commercial grade temperature ratings, while 'LVC' denotes Low Voltage CMOS technology. The 'DBR' suffix specifies the SSOP package with reel packaging, and 'G4' signifies lead-free and RoHS compliance. It serves as a digital buffer register for retaining data on bus lines.

Latches Replacement Considerations

SN74LVC573ADWRG4 (SOIC-20 package)

Latches FAQ

How does the Ioff feature function?

The Ioff circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down, allowing voltages on inputs and outputs even when VCC is 0 V.

What is the maximum propagation delay?

The maximum propagation delay (tpd) is 6.9 ns at a supply voltage of 3.3 V.