Nexperia USA Inc. 74LVC541APW,112

Overview

74LVC541APW,112 from Nexperia is an octal 3-state buffer/line driver with dual output enables (OE1, OE2), 5 V-tolerant inputs/outputs, and Schmitt-trigger inputs for noise immunity. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage translation between 3.3 V and 5 V systems, and features IOFF partial power-down protection. Used in bus interface and level-shifting applications in industrial control and embedded I/O expansion.

For engineers reviewing the 74LVC541APW,112 datasheet, 74LVC541APW,112 pinout, 74LVC541APW,112 application, or 74LVC541APW,112 equivalent, key selection criteria include 5 V input tolerance, dual active-low output enables, guaranteed operation down to 1.2 V, IOFF current blocking at VCC = 0 V, and TSSOP20 package compatibility with high-density PCB layouts.

Technical Context

This device implements eight non-inverting buffers with independent 3-state control via two active-low enable inputs (OE1 and OE2). Each output enters high-impedance state when either OE is HIGH, enabling flexible bus arbitration and multi-driver sharing.

Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), allowing reliable operation with slow-rising signals and reducing susceptibility to noise on control or data lines. The IOFF circuit ensures outputs are disabled and backflow current blocked when VCC = 0 V, supporting hot-insertion and partial power-down system architectures.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, 0.8 mm max height - optimized for automated placement and high-density routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC541APWR, the 74LVC541APW,112 offers identical functionality but with full −40 °C to +125 °C specification confirmed in Nexperia's Rev. 7 datasheet; versus the SO20 variant, it delivers 30 % smaller PCB area and improved thermal performance in automated manufacturing.

Availability

74LVC541APW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus interface, and automotive body control module applications requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74LVC541APW,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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC541A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for robust, low-power, mixed-voltage interfacing in space-constrained and thermally demanding applications.

FAQ

Can 74LVC541APW,112 drive 5 V loads while powered from 3.3 V?

Yes. Its outputs are 5 V tolerant up to +5.5 V, meaning they can safely drive 5 V logic inputs or pull-up networks even when VCC = 3.3 V. This is enabled by overvoltage-tolerant output structures, not level-shifting circuitry - outputs replicate the input logic state at the local VCC level, but tolerate higher voltages on the output pins without damage.

What happens to outputs when VCC = 0 V and OE pins are asserted?

When VCC = 0 V, the IOFF circuit activates automatically, forcing all outputs into high-impedance regardless of OE pin states. Measured IOFF leakage is ≤±10 μA at 5.5 V applied to any output - this prevents back-current from externally powered buses into the unpowered IC, satisfying IEC 61000-4-2 and system-level hot-swap requirements.

Is the TSSOP20 package (SOT360-1) compatible with standard reflow profiles?

Yes. The SOT360-1 package is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 (MSL-1), with peak reflow temperature up to 260 °C. Its 0.65 mm pitch and exposed pad-free construction support standard lead-free reflow profiles; recommended preheat ramp rate is ≤3 °C/s and time above liquidus is 60–150 s at 217–220 °C.

How does Schmitt-trigger input action improve noise immunity?

Schmitt-trigger inputs provide hysteresis - typically 0.3 V at VCC = 3.3 V - meaning the rising threshold (VIH) is ~0.15 V higher than the falling threshold (VIL). This prevents multiple output transitions caused by slow or noisy input edges, such as those from long PCB traces, unshielded cables, or mechanical switches, ensuring single, clean logic transitions per input event.