SN74LVTH240DWRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH240DWRE4 is a Texas Instruments octal buffer and line driver from the LVTH series, housed in a 20-pin SOIC (DW) package. It operates with a supply voltage range of 2.7 V to 3.6 V. The device features 3-state outputs and supports mixed-mode signal operation, allowing 5-V input tolerance with 3.3-V VCC. Key electrical parameters include a high-level output current of -32 mA and a low-level output current of 64 mA at VCC = 3.3 V. Propagation delay is typically 2.2 ns for tPLH and 2.6 ns for tPHL at VCC = 3.3 V. It includes active bus-hold circuitry on data inputs and Ioff support for hot insertion.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation by accepting 5-V inputs while operating at 3.3-V VCC
• Features active bus-hold circuitry on data inputs to maintain valid logic states without external resistors
• Provides Ioff and power-up 3-state capabilities to prevent damaging backflow currents during hot insertion

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-signal systems requiring interface between 5-V and 3.3-V logic domains
• Bus-oriented memory and address drivers
• Clock distribution and buffering applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'E4' corresponds to lead-free packaging and RoHS compliance as defined in the manufacturer's documentation. Confirm the 'R' suffix indicates tape and reel packaging rather than tube. Ensure the specific revision level of the datasheet matches the production lot requirements for your design integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing for 3.3-V ABT technology with 5-V input compatibility. It is suitable for applications requiring high drive strength (up to 64 mA low-level current) and fast propagation delays. Consider the SOIC-20 package dimensions for PCB layout constraints compared to other available packages like SSOP or TSSOP.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVTH240 family of octal buffers and line drivers. The 'DW' suffix denotes the 20-pin Small Outline Integrated Circuit package. The 'RE4' suffix indicates it is supplied in a tape and reel format and is manufactured using lead-free materials compliant with environmental directives.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH240DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

The device utilizes active bus-hold circuitry on its data inputs, which holds undriven inputs at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What is the purpose of the Ioff feature?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device into the system.