SN74LVC573AN

Latches Overview

The SN74LVC573AN 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 features inputs that accept voltages up to 5.5 V, supporting mixed-mode signal operation. The device provides a maximum propagation delay of 6.9 ns at 3.3 V and includes Ioff circuitry for partial power-down mode support. It is housed in a 20-pin PDIP package.

Latches Feature Summary

• Features 3-state outputs designed for driving highly capacitive or low-impedance loads
• Includes Ioff circuitry to prevent damaging current backflow during partial power-down
• Inputs are tolerant to 5.5 V, allowing down-voltage translation

Latches Applications

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

Latches Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact package type, lead finish, and operating temperature range. Ensure the selected variant matches the required thermal impedance and reflow profile specifications for the intended assembly process.

Latches Selection Notes

Select this component when designing systems requiring high-speed data latching with mixed-voltage compatibility. The 5.5 V input tolerance allows interfacing between 5 V logic sources and lower voltage 3.3 V or 1.8 V systems without additional level shifters. Consider the 24 mA drive capability for bus applications.

Latches Part Context

This part belongs to the SNx4LVC573A family of octal transparent D-type latches. While the SN54LVC573A variant supports military-grade temperatures (-55°C to 125°C), the SN74LVC573A is rated for commercial/industrial use (-40°C to 85°C). The 'N' suffix specifically denotes the standard 20-pin Plastic Dual In-Line Package (PDIP).

Latches Replacement Considerations

SN74LVC573ADW

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 propagation delay?

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