SN74LVTH240NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH240NSR is a 3.3-V ABT octal buffer and line driver with 3-state outputs, manufactured by Texas Instruments in a 20-pin SOIC 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 tolerance with 3.3-V VCC. The device features active bus-hold circuitry on data inputs and Ioff support for hot-insertion applications. Electrical characteristics include a typical propagation delay of 2.6 ns at 3.3 V, high-level output current of -32 mA, and low-level output current of 64 mA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V input compatibility while operating at 3.3-V VCC
• Features active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors
• Provides Ioff and power-up 3-state support to enable safe hot-insertion without damaging backflow currents
• Includes latch-up performance exceeding 500 mA per JESD 17 and ESD protection exceeding 2000-V human-body model

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal translation between 5-V systems and 3.3-V memory buses
• Clock distribution and buffering for high-speed digital circuits
• Bus-oriented drivers for consumer products and telecommunications equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'NSR' corresponds to the SOP-20 tape and reel packaging configuration. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer's documentation. Ensure the procurement source provides valid traceability for the LXH240 part marking found on the device surface.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring 3.3-V logic levels with 5-V tolerant inputs. The SN74LVTH240NSR is suitable for applications needing octal buffering with independent output enables. Consider the SOIC-20 package dimensions for PCB layout constraints and verify thermal requirements for the specified operating temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LVTH240 family of 3.3-V ABT octal buffers. It is functionally compatible with other variants in the series such as SN74LVTH240DWR and SN74LVTH240PWR, which share identical electrical specifications but differ in package type. The NSR suffix specifically denotes the SOP package delivered in tape and reel format for automated assembly.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH240DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

The SN74LVTH240NSR utilizes active bus-hold circuitry on its data inputs, which holds undriven inputs at a valid logic state without requiring external pullup or pulldown resistors.

What is the maximum input voltage supported?

The device supports 5-V input voltages despite operating from a 2.7-V to 3.6-V supply, enabling mixed-mode signal operation with 5-V system environments.