SN74LVTH373PW

Latches Overview

The SN74LVTH373PW is an octal transparent latch manufactured by Texas Instruments in a 20-pin TSSOP package. It operates within a supply voltage range of 2.7 V to 3.6 V and supports mixed-mode signal operation, allowing 5-V input and output voltages with 3.3-V VCC. The device features active bus-hold circuitry on data inputs, eliminating the need for external pullup or pulldown resistors. It includes Ioff and power-up 3-state support for hot insertion applications. Latch-up performance exceeds 500 mA per JESD 17, and ESD protection exceeds 2000-V human-body model and 200-V machine model standards.

Latches Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant inputs and outputs while operating at 3.3-V VCC
• Active bus-hold circuitry maintains unused or undriven inputs at valid logic states without external components
• Provides Ioff and power-up 3-state functionality to prevent damaging current backflow and driver conflicts during hot insertion

Latches Applications

• Bus structure systems requiring low-voltage latching
• Mixed-mode signal environments interfacing 5-V systems with 3.3-V components
• Hot-insertion applications requiring high-impedance state support during power transitions

Latches Procurement Notes

Verify the specific ordering suffix to confirm the packaging type, as the base part number corresponds to multiple configurations. The 'PW' suffix indicates a tube package containing 70 units, whereas 'PWR' denotes a tape and reel configuration. Confirm that the required moisture sensitivity level and lead finish meet your assembly specifications before procurement.

Latches Selection Notes

Select this component when designing systems that require octal latching with 5-V tolerance in a 3.3-V environment. The TSSOP package offers a compact surface-mount solution suitable for space-constrained designs. Ensure that the application leverages the bus-hold feature to simplify input handling for unused channels and utilizes the 3-state outputs for efficient bus management.

Latches Part Context

This device belongs to the SN54LVTH373 family of octal transparent latches designed for low-voltage ABT (Advanced BiCMOS Technology) applications. It provides high-speed performance comparable to 5-V ABT devices while maintaining lower CMOS power consumption. The family includes variants for different temperature ranges and packaging options, such as SOIC, SSOP, and military-grade CDIP packages.

Latches Replacement Considerations

SN74LVTH373DW: Same logical function and electrical characteristics housed in a 20-pin SOIC package instead of TSSOP. Verify pin compatibility and thermal requirements when substituting due to the difference in package footprint and heat dissipation properties.