SN74LVT573DBR

Latches Overview

The SN74LVT573DBR is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It utilizes Advanced BiCMOS Technology (ABT) for 3.3-V operation and low static power dissipation. The device supports mixed-mode signal operation, allowing 5-V input and output voltages with a 3.3-V VCC supply. It operates on unregulated battery voltage down to 2.7 V. The package is a 20-pin Shrink Small-Outline (SSOP).

Latches Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant inputs and outputs while operating at 3.3 V.
• Features active bus-hold data inputs that eliminate the need for external pullup resistors.
• Provides high-impedance state capability to drive bus lines without interface or pullup components.
• Designed for live insertion support and includes ESD protection exceeding 2000 V per MIL-STD-883C.

Latches Applications

• Bidirectional bus drivers
• Buffer registers
• I/O ports
• Working registers

Latches Procurement Notes

Verify component status as obsolete or NRND before procurement planning. Confirm RoHS compliance and lead finish specifications against current datasheet revisions. Ensure design-in compatibility with existing PCB footprints for the SSOP-20 package. Validate temperature range requirements against the specified -40°C to 85°C operational limits.

Latches Selection Notes

Select this component for designs requiring 3.3-V logic interfacing with 5-V systems. Consider the ABT technology for low power consumption and high-speed performance. Verify that the 20-pin SSOP package fits the available board space constraints. Check if active bus-hold functionality meets the specific input handling requirements of the application.

Latches Part Context

This part belongs to the SN74LVT573 family of octal latches. It is characterized for commercial temperature ranges (-40°C to 85°C), distinct from the military-grade SN54LVT573 variant. The DB suffix specifically denotes the Shrink Small-Outline Package (SSOP) configuration.

Latches Replacement Considerations

SN74LVTH573DBR

Latches FAQ

How does the device handle unused data inputs?

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level, eliminating the need for external pullup resistors.

What is the function of the OE input?

The buffered output-enable (OE) input places the eight outputs in either a normal logic state or a high-impedance state, which neither loads nor drives the bus lines significantly.