74LVC573AD,112

Latches Overview

The 74LVC573AD,112 is an octal D-type transparent latch with 3-state outputs manufactured by Nexperia. It operates within a supply voltage range of 1.2 V to 3.6 V and features overvoltage tolerant inputs capable of handling up to 5.5 V. The device utilizes Schmitt-trigger action at all inputs to tolerate slower rise and fall times. It includes IOFF circuitry for partial power-down applications, preventing damaging backflow currents when powered down. The component is housed in a SO20 plastic small outline package (SOT163-1) and supports operating temperatures from -40 °C to +125 °C.

Latches Feature Summary

• Provides 8-bit data storage with transparent latch functionality controlled by Latch Enable (LE) and Output Enable (OE) signals.
• Features 5 V tolerant inputs and outputs, allowing direct interfacing between 3.3 V and 5 V logic systems.
• Incorporates IOFF circuitry to disable outputs during partial power-down, preventing backflow current.
• Includes Schmitt-trigger inputs to ensure clean switching despite slow input signal transitions.

Latches Applications

• Mixed 3.3 V and 5 V logic environments requiring level translation
• Partial power-down system designs utilizing IOFF protection
• Data bus buffering and latching applications

Latches Procurement Notes

Verify the specific ordering suffix ',112' corresponds to the SO20 (SOT163-1) package variant as documented in the official Nexperia datasheet. Confirm that the required temperature range extends to +125 °C, as this specific package version supports the full industrial range compared to other variants. Ensure design compatibility with the 3.6 V maximum supply voltage limit.

Latches Selection Notes

Select this component when an octal latch with 5 V tolerance is required for mixed-voltage digital interfaces. The SO20 package offers a standard footprint suitable for general-purpose PCB layouts. Consider the IOFF feature if the application demands protection against backflow currents during power-down states. Verify that the propagation delay characteristics meet the timing requirements of the target system clock speeds.

Latches Part Context

This part belongs to the 74LVC573A family of octal D-type transparent latches produced by Nexperia. The 'AD' designation specifically identifies the SO20 plastic small outline package variant. The family is characterized by low power consumption and CMOS technology, designed to interface directly with TTL levels while maintaining compatibility with JEDEC standards for various supply voltage ranges.

Latches Replacement Considerations

The 74LVC573APW serves as a functional substitute using a TSSOP20 package. The 74LVC573ABQ is another alternative featuring a DHVQFN20 package. All variants share identical electrical specifications and pin functions, differing only in physical package dimensions and thermal properties.