74AHC573D,118

Latches Overview

The Nexperia 74AHC573D,118 is an octal D-type transparent latch with 3-state outputs housed in a 20-lead SO plastic small outline package (SOT163-1). It operates within a supply voltage range of 2.0 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features balanced propagation delays, Schmitt-trigger inputs for high noise immunity, and overvoltage tolerant inputs up to 5.5 V. Static characteristics include low power dissipation and robust ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

Latches Feature Summary

• Features Schmitt-trigger action on all inputs to ensure high noise immunity.
• Provides overvoltage tolerant inputs allowing operation in mixed voltage environments.
• Includes common 3-state output enable input for bus-oriented applications.
• Offers balanced propagation delays for consistent signal timing.

Latches Applications

• Bus-oriented data storage systems requiring 3-state control.
• Microprocessor interface circuits for input or output port expansion.
• Mixed voltage translation applications utilizing overvoltage tolerant inputs.
• High-speed digital logic designs requiring balanced propagation delays.

Latches Procurement Notes

Verify the specific ordering suffix

Latches Selection Notes

Select this component when an octal latch with 3-state outputs is required for bus applications. Ensure the design utilizes CMOS input levels compatible with the AHC series. Verify that the operating environment stays within the specified temperature range of -40 °C to +125 °C. Confirm that the PCB layout accommodates the SO20 package dimensions defined by SOT163-1.

Latches Part Context

This part belongs to the 74AHC/AHCT573 family of octal D-type transparent latches. It is functionally identical to the 74AHC373 and 74AHCT373 variants. The device is manufactured by Nexperia USA Inc. and complies with JEDEC standards JESD8C and JESD7A. It is available in multiple package options including SO20, TSSOP20, and DHVQFN20.

Latches Replacement Considerations

The 74AHC373 and 74AHCT373 are functionally identical alternatives. Other packages in the same family, such as 74AHC573PW or 74AHC573BQ, offer different form factors but share identical electrical specifications.

Latches FAQ

Are the inputs overvoltage tolerant?

Yes, the inputs are overvoltage tolerant up to 5.5 V, allowing them to interface with 5.5 V signals even if the device is powered at lower voltages.

What is the ESD protection rating?

The device provides ESD protection exceeding 2000 V according to ANSI/ESDA/JEDEC JS-001 class 2 (HBM) and exceeds 1000 V according to ANSI/ESDA/JEDEC JS-002 class C3 (CDM).