Nexperia USA Inc. 74LVT241DB,112

Overview

74LVT241DB,112 from Nexperia is a 3.3 V BiCMOS octal 3-state buffer/line driver with dual independent output enables (1OE active LOW, 2OE active HIGH), ±64 mA/–32 mA drive capability, bus-hold inputs, and operation from –40 °C to +85 °C. It interfaces 3.3 V logic to 5 V buses and drives high-capacitance backplanes in industrial control and telecom line cards.

For engineers reviewing the 74LVT241DB,112 datasheet, 74LVT241DB,112 pinout, 74LVT241DB,112 application, or 74LVT241DB,112 equivalent, key selection criteria include dual 3-state control timing, TTL-compatible input thresholds, bus-hold functionality eliminating external pull-ups, and SO20 package thermal performance under sustained 64 mA sink loads.

Technical Context

This device implements two independent 4-bit 3-state buffers in a single SO20 package. Each group (1Y0–1Y3 and 2Y0–2Y3) is controlled by its own enable: 1OE (active LOW) and 2OE (active HIGH), enabling asymmetric bus arbitration and staggered power-up sequencing.

It uses BiCMOS architecture to achieve TTL-level input compatibility (VIH ≥ 2.0 V, VIL ≤ 0.8 V) while operating at 3.3 V supply (2.7–3.6 V), with bus-hold circuitry (IBHL = 75–150 μA, IBHH = –150 to –75 μA) on all data inputs to maintain valid logic states on floating pins without external resistors.

Key Specifications

Pinout & Package

74LVT241DB,112 is supplied in SO20 (SOT163-1) package: plastic small outline, 20 leads, 7.5 mm body width, 1.27 mm lead pitch, with gull-wing leads and pin 1 index notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC244APWR and 74ALVC244MTCX, the 74LVT241DB,112 uniquely delivers dual independent 3-state control, 64 mA sink capability for 5 V bus termination, and integrated bus-hold-enabling simpler, more robust designs in mixed-voltage industrial backplanes without added passives or timing constraints.

Availability

74LVT241DB,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line card interfaces, automated test equipment signal routing, and medical imaging data acquisition modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVT241DB,112 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

Nexperia is a global semiconductor expert delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in industrial, automotive, and consumer applications.

The 74LVT series targets high-speed, low-power bus interface applications where BiCMOS combines TTL compatibility with 3.3 V operation-specifically engineered for robust 5 V-tolerant data routing in noise-prone industrial control and communications infrastructure.

FAQ

What is the function of pin 19 (2OE) versus pin 1 (1OE) on the 74LVT241DB,112?

Pin 1 (1OE) is an active-LOW enable controlling outputs 1Y0–1Y3; it asserts 3-state when HIGH and enables drive when LOW. Pin 19 (2OE) is active-HIGH and controls outputs 2Y0–2Y3; it asserts 3-state when LOW and enables drive when HIGH. This asymmetry allows independent timing control-for example, enabling one group during power-up while holding the other in high-impedance until system initialization completes.

Can the 74LVT241DB,112 safely interface with 5 V logic inputs while powered from 3.3 V?

Yes. The device accepts input voltages up to 5.5 V on all data and enable pins (VI ≤ 5.5 V), with TTL-compatible thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). Its 3.3 V supply does not limit input voltage tolerance, making it suitable for mixed-voltage bus bridging without external level translators.

How does the bus-hold feature eliminate external pull-up resistors?

The bus-hold circuit actively maintains the last-valid logic state on each data input using weak feedback transistors. With IBHL = 75–150 μA (LOW) and IBHH = –75 to –150 μA (HIGH), it overcomes typical PCB leakage and noise without external components-reducing BOM cost, saving PCB area, and improving reliability in high-density layouts.

What thermal considerations apply to the SO20 package under full 64 mA sink load?

In SO20 (SOT163-1), continuous 64 mA sink per output at 3.3 V yields ~211 mW total dissipation (8 × 64 mA × 0.33 V typical VOL). With Ptot = 500 mW max and RθJA ≈ 70 °C/W (JEDEC standard board), junction rise is ~15 °C above ambient-well within the –40 °C to +85 °C rating. No heatsink is required for typical industrial airflow conditions.