Texas Instruments SN74ABT2241N

Overview

SN74ABT2241N from Texas Instruments is an octal noninverting buffer/line driver with 3-state outputs, designed for memory address and bus-oriented applications. It operates at 4.5–5.5 V, supports ±12 mA output drive, integrates 25-Ω series output resistors, and is rated for –40°C to 85°C. Its dual OE-controlled banks enable independent bus isolation in high-density digital systems.

For engineers reviewing the SN74ABT2241N datasheet, SN74ABT2241N pinout, SN74ABT2241N application, or SN74ABT2241N equivalent, key selection criteria include 3-state timing (tPZL ≤ 8.4 ns), output current capability (IOL = 12 mA), integrated series termination, BiCMOS power efficiency, and compatibility with 5-V TTL/CMOS logic families.

Technical Context

This device implements two independent 4-bit noninverting buffer banks (1A→1Y and 2A→2Y), each controlled by a dedicated active-low output-enable (OE) input. The EPIC-II^B BiCMOS process delivers low ground bounce (VOLP < 1 V) and reduced ICC versus standard ABT logic.

Each output features built-in 25-Ω series resistance to suppress transmission-line overshoot/undershoot without external components. Input thresholds comply with TTL levels (VIL = 0.8 V, VIH = 2 V), and the device supports hot-swap–safe 3-state control when OE is pulled up/down via external resistors during power sequencing.

Key Specifications

Pinout & Package

SN74ABT2241N uses a 20-pin plastic DIP (N package) with 0.3-inch body width and through-hole mounting. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Compared with SN74ABT2240N, SN74ABT2241N provides noninverting signal path integrity critical for address decoding; versus SN74LVC244APW, it delivers native 5-V compatibility, built-in termination, and superior noise immunity in electrically harsh industrial environments.

Availability

SN74ABT2241N is available at Aetrix Electronics and suitable for memory address buffering, bus transceiver isolation, legacy system expansion, and industrial backplane driving requiring stable component supply and long-term industrial temperature support.

Supply support for SN74ABT2241N 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 decades of heritage in industry-standard logic families.

The SN74ABT2241N belongs to the ABT advanced bi-directional transistor logic family, engineered for high-speed, low-noise 5-V bus interfacing in industrial, computing, and communications infrastructure.

FAQ

What is the maximum clock frequency supported by SN74ABT2241N in address buffering applications?

The SN74ABT2241N does not operate on a clock signal-it is asynchronous. Its propagation delay (tPLH/tPHL ≤ 4.7 ns) and 3-state transition times (tPZL ≤ 8.4 ns) support reliable use in systems with effective data rates up to ~100 MHz, assuming proper trace length and termination. For SN74ABT2241N, timing margins depend on board layout, not internal clocking.

Does SN74ABT2241N require external pull-up or pull-down resistors on its OE pins?

Yes-TI recommends tying 1OE and 2OE to VCC via a pull-up resistor and to GND via a pulldown resistor to ensure defined high-impedance states during power-up/power-down. Minimum resistor values depend on driver current-sourcing/sinking capability; typical values range from 4.7 kΩ to 10 kΩ for robust noise immunity and fast edge response in SN74ABT2241N designs.

Can SN74ABT2241N drive standard 50-Ω transmission lines directly?

No-SN74ABT2241N's integrated 25-Ω series resistors are optimized for stub-loaded or short-point-to-point PCB traces (≤6 inches), not full 50-Ω impedance matching. For true 50-Ω line driving, external series or parallel termination is required. The 25-Ω value in SN74ABT2241N reduces overshoot on unterminated nets but does not replace proper transmission-line design.

Is SN74ABT2241N compatible with 3.3-V logic inputs?

SN74ABT2241N accepts 3.3-V logic-high inputs safely-the VIH specification is 2.0 V minimum, and absolute max input voltage is 7 V. However, its outputs swing to 5-V levels, so interfacing with 3.3-V receivers requires level translation or tolerant inputs. SN74ABT2241N itself operates only at 4.5–5.5 V and cannot be powered from 3.3 V.

What is the thermal performance of SN74ABT2241N in the N-package?

The SN74ABT2241N in the plastic DIP (N) package has a θJA of 67°C/W, measured under JEDEC JESD51-2 conditions. At 24 mA typical ICC and 12 mA worst-case IOL per active output, junction temperature rise remains within safe limits (<30°C above ambient) in still-air environments-making SN74ABT2241N suitable for convection-cooled industrial PCBs without forced airflow.