74LVC573ABXX

Latches Overview

The 74LVC573ABXX is an octal D-type transparent latch manufactured by Nexperia, housed in a DHXQFN-20 package. It operates within a supply voltage range of 1.2 V to 3.6 V and supports a wide operating temperature from -40 °C to +125 °C. The device features eight non-inverting outputs with a propagation delay of 8.5 ns. It provides low-level output current of 24 mA and high-level output current of -24 mA. Quiescent power consumption is specified at a maximum of 40 µA.

Latches Feature Summary

• Features overvoltage tolerant inputs capable of interfacing with 5 V logic devices while operating at lower supply voltages.
• Includes IOFF circuitry that disables outputs during partial power-down to prevent damaging backflow currents.
• Utilizes Schmitt-trigger action at all inputs to ensure tolerance for slower input rise and fall times.

Latches Applications

• Bus-oriented applications requiring data storage and transfer between system components
• Mixed 3.3 V and 5 V environments serving as level translators
• Portable equipment utilizing battery-powered systems

Latches Procurement Notes

Verify the specific suffix XX against official Nexperia documentation to confirm exact packaging and tape-and-reel specifications. Confirm RoHS compliance status through the manufacturer's latest product data sheet. Check for end-of-life notifications or obsolescence warnings prior to procurement decisions.

Latches Selection Notes

Select this component when an octal latch with 5 V tolerant inputs is required for mixed-voltage designs. Ensure the DHXQFN-20 package fits the PCB layout constraints. Verify that the 8.5 ns propagation delay meets the timing requirements of the target application interface.

Latches Part Context

This part belongs to the LVC (Low Voltage CMOS) logic family, designed for low-power applications in portable electronics. It is functionally similar to other 74LVC573 variants but distinguished by its specific QFN packaging and thermal characteristics defined by Nexperia.

Latches Replacement Considerations

Cross-reference with other 74LVC573 variants from manufacturers like Texas Instruments or Diodes Incorporated. Ensure pinout compatibility and electrical specifications match before substitution.

Latches FAQ

How does the device handle partial power-down conditions?

The integrated IOFF circuitry automatically disables the outputs when the device is powered down, preventing potentially damaging backflow currents through the device.

What is the input tolerance voltage for this latch?

The inputs are overvoltage tolerant up to 5.5 V, allowing direct interfacing with 5 V devices even when the supply voltage is lower.