Texas Instruments SN74LVTH241NSRE4

Overview

SN74LVTH241NSRE4 from Texas Instruments is an octal noninverting buffer/driver IC designed for 3.3-V V_CC operation with 5-V tolerant inputs and outputs, supporting mixed-mode signal interfacing between 3.3-V and 5-V systems. It features dual 4-bit channels, bus-hold circuitry on all data inputs, I_off protection, and hot-insertion support. Typical applications include backplane buffering in industrial control modules and level-shifting in legacy 5-V bus interfaces.

For engineers reviewing the SN74LVTH241NSRE4 datasheet, SN74LVTH241NSRE4 pinout, SN74LVTH241NSRE4 application, or SN74LVTH241NSRE4 equivalent, key selection criteria include its 2.7–3.6-V supply range, ±100 µA I_off current at V_CC = 0 V, 64-mA low-level output drive, bus-hold input retention, and SSOP-20 package compatibility with space-constrained PCB layouts.

Technical Context

The SN74LVTH241NSRE4 implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by dedicated output-enable inputs (1OE, 2OE). Its TTL-compatible input thresholds (V_IL = 0.8 V, V_VIH = 2 V) and 5-V-tolerant I/O allow direct connection to 5-V logic without external level shifters.

Bus-hold circuitry actively maintains valid logic states on undriven inputs, eliminating need for external pullup/pulldown resistors. Power-up 3-state and I_off functionality ensure high-impedance outputs during power sequencing and prevent backflow current when powered down.

Key Specifications

Pinout & Package

SN74LVTH241NSRE4 is packaged in a 20-pin SSOP (Small Outline Package) with 0.65-mm lead pitch, 7.4-mm body width, and 2.0-mm maximum height per JEDEC MO-150. The package is RoHS-compliant, moisture-sensitive Level-1, and optimized for automated surface-mount assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC244APWR and SN74AHCT244N, the SN74LVTH241NSRE4 uniquely combines 5-V-tolerant I/O, bus-hold inputs, I_off-enabled hot insertion, and 64-mA drive in a 3.3-V system - making it the only option for robust mixed-voltage backplane interfacing with zero external components.

Availability

SN74LVTH241NSRE4 is available at Aetrix Electronics and suitable for industrial backplane buffering, legacy bus interface translation, and modular I/O expansion requiring stable component supply across extended temperature ranges (−40°C to 85°C).

Supply support for SN74LVTH241NSRE4 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 connectivity technologies with over 50 years of innovation in industrial, automotive, and communications markets.

The SN74LVTH241NSRE4 belongs to TI's LVTH logic family, engineered specifically for reliable mixed-voltage interfacing in harsh industrial environments where hot-swap capability, bus stability, and 5-V compatibility are critical.

FAQ

What is the recommended operating voltage range for SN74LVTH241NSRE4?

The SN74LVTH241NSRE4 is specified for a V_CC supply range of 2.7 V to 3.6 V. Operation below 2.7 V is not guaranteed, and exceeding 3.6 V risks damage. The device supports unregulated battery operation down to 2.7 V while maintaining full logic functionality and output drive capability - a key advantage in portable and field-deployable industrial equipment where supply rails may sag under load.

Does SN74LVTH241NSRE4 require external pullup or pulldown resistors on its inputs?

No, SN74LVTH241NSRE4 does not require external pullup or pulldown resistors. Its integrated bus-hold circuitry actively maintains valid logic states on all eight data inputs (1A1–1A4, 2A1–2A4) when left floating. This feature eliminates BOM items and layout complexity, especially in modular systems where connector pins may be unconnected during configuration. Using external resistors with bus-hold inputs is explicitly discouraged in the datasheet.

Can SN74LVTH241NSRE4 safely interface with 5-V logic signals?

Yes, SN74LVTH241NSRE4 supports true 5-V-tolerant inputs and outputs while operating from a 3.3-V supply. Its absolute maximum input voltage is 7 V, and it accepts standard TTL logic thresholds (V_IL ≤ 0.8 V, V_VIH ≥ 2 V). Outputs swing rail-to-rail up to 5.5 V, enabling direct connection to 5-V loads without level-shifting components - a core design objective confirmed in the device description and ordering information section.

How does SN74LVTH241NSRE4 support hot-insertion in modular systems?

SN74LVTH241NSRE4 supports hot-insertion via two complementary features: I_off circuitry disables outputs and blocks current backflow when V_CC = 0 V, and power-up 3-state forces outputs into high-impedance during power ramp-up/down. These functions prevent bus contention and damage when cards are inserted or removed under power - a requirement explicitly validated in the datasheet's "Support Hot Insertion" bullet and functional description.

What package type and dimensions does SN74LVTH241NSRE4 use?

SN74LVTH241NSRE4 uses a 20-pin SSOP (Shrink Small Outline Package) with JEDEC MO-150 registration, 0.65-mm lead pitch, 7.4-mm body width, and 2.0-mm maximum height. Pin 1 is marked by a notch or index area per the DB0020A package drawing. The SSOP-20 footprint is widely supported in industrial PCB design libraries and compatible with standard reflow profiles for Level-1 moisture sensitivity.