Texas Instruments SN74LVTH241DW

Overview

SN74LVTH241DW from Texas Instruments is an octal noninverting buffer/driver IC designed for 3.3-V V_CC operation with mixed-mode 5-V input/output tolerance, supporting hot insertion via I_off and power-up 3-state, featuring bus-hold on all data inputs, and rated for −40°C to 85°C industrial temperature range.

For engineers reviewing the SN74LVTH241DW datasheet, SN74LVTH241DW pinout, SN74LVTH241DW application, or SN74LVTH241DW equivalent, this page delivers verified electrical specs (V_OH = 2 V @ I_OH = −32 mA), thermal data (θ_JA = 58°C/W), bus-hold current (±75 µA), propagation delay (t_PLH = 3.5 ns typ), and SOIC-20 package mechanical dimensions - all confirmed for the exact DW-packaged part.

Technical Context

The SN74LVTH241DW implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by dedicated output-enable inputs (1OE low-active, 2OE high-active). Its TTL-compatible input thresholds (V_IL = 0.8 V, V_VIH = 2 V) and 5-V-tolerant I/O allow seamless interfacing between 3.3-V logic domains and legacy 5-V systems.

Bus-hold circuitry actively maintains undriven inputs at valid logic levels without external resistors, while I_off protection limits current flow during power-down (±100 µA at V_CC = 0), and power-up 3-state ensures outputs remain high-impedance until V_CC exceeds 1.5 V - critical for hot-swap backplane and modular system designs.

Key Specifications

Pinout & Package

SN74LVTH241DW is housed in a 20-pin SOIC (DW) package measuring 12.83 mm × 7.5 mm × 2.65 mm (max height), with 1.27-mm lead pitch, JEDEC MS-013 compliant, RoHS-compliant NiPdAu finish, and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal buffer applications.

Compared with SN74LVTH241DW, SN74LVC241APW lacks 5-V I/O tolerance and bus-hold, requiring additional components in mixed-voltage designs, while 74ALVC244MTCX offers lower channel density and no hot-swap protection - making SN74LVTH241DW the sole option meeting all three requirements: octal drive, 5-V compatibility, and hot-insertion readiness.

Availability

SN74LVTH241DW is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extensions, hot-swappable module control, and embedded data acquisition front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVTH241DW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.

The SN74LVTH241DW belongs to TI's LVTH logic family, engineered specifically for mixed-voltage system interconnect - balancing 3.3-V power efficiency with 5-V signal compatibility and robust hot-swap operation in mission-critical infrastructure.

FAQ

What is the maximum operating temperature for SN74LVTH241DW?

The SN74LVTH241DW is specified for industrial operation from −40°C to +85°C ambient temperature. Its SOIC-20 (DW) package has a thermal resistance θ_JA of 58°C/W, meaning junction temperature remains within safe limits under typical load conditions at 85°C ambient when properly decoupled and mounted on standard FR-4 PCBs with adequate copper area.

Does SN74LVTH241DW support hot insertion, and how is it implemented?

Yes, SN74LVTH241DW supports hot insertion through two integrated features: I_off circuitry disables outputs when V_CC = 0, preventing damaging current backflow, and power-up 3-state holds outputs in high-impedance until V_CC exceeds 1.5 V. These functions are inherent to the silicon design and require no external components to enable safe live-board connection.

Can SN74LVTH241DW drive standard 5-V TTL loads directly?

Yes, SN74LVTH241DW can directly drive standard 5-V TTL loads. Its outputs deliver V_OH ≥ 2.0 V at I_OH = −32 mA and V_OL ≤ 0.55 V at I_OL = 64 mA under 3.3-V V_CC, satisfying TTL input thresholds (V_IH ≥ 2.0 V, V_IL ≤ 0.8 V) while maintaining noise margins. Inputs also accept 5-V signals safely up to 5.5 V.

Is external pullup or pulldown required for unused inputs on SN74LVTH241DW?

No, external pullup or pulldown resistors are not required for unused inputs on SN74LVTH241DW. Its integrated bus-hold circuitry actively maintains undriven inputs at valid logic states using ±75 µA dynamic current, eliminating floating nodes and associated noise susceptibility - a key differentiator from standard LVC or LS logic families.

What is the recommended decoupling for SN74LVTH241DW?

A minimum 0.1-µF ceramic capacitor placed as close as possible to the V_CC (Pin 20) and GND (Pin 10) pins is recommended for SN74LVTH241DW. For systems with high-frequency switching or multiple devices, add a bulk 4.7-µF tantalum or aluminum electrolytic capacitor nearby. Avoid shared vias between decoupling caps and GND to minimize inductance and ground bounce.