Nexperia USA Inc. 74VHC541PW,118

Overview

74VHC541PW,118 from Nexperia is an octal non-inverting 3-state buffer/line driver in TSSOP20 package, operating from 2.0 V to 5.5 V with propagation delay as low as 3.5 ns (VCC = 4.5–5.5 V, CL = 15 pF), input Schmitt-trigger action, and TTL-compatible variants (74VHCT541). It enables bidirectional bus interfacing in industrial control backplanes and microcontroller I/O expansion.

For engineers reviewing the 74VHC541PW,118 datasheet, 74VHC541PW,118 pinout, 74VHC541PW,118 application, or 74VHC541PW,118 equivalent, this page delivers verified functional behavior, thermal-rated TSSOP20 packaging, dual active-low output enable control (OE0/OE1), CMOS-level input compatibility, and real-world timing margins for high-density PCB designs.

Technical Context

The device implements eight independent non-inverting buffers, each with high-impedance tri-state outputs controlled by two shared active-low enable inputs (OE0 and OE1). Both enables must be LOW to activate all eight outputs; any HIGH forces all Yn outputs into high-impedance state.

It features Schmitt-trigger inputs for noise immunity on slow-rising signals, supports input voltages up to 7.0 V regardless of VCC, and maintains rail-to-rail output swing (VOH ≥ 3.94 V at IO = −8 mA, VCC = 4.5 V; VOL ≤ 0.36 V at IO = 8 mA).

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad optional (non-electrical).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74VHC541PW,118, the 74VHCT541PW,118 retains identical timing and drive but adds TTL input compatibility-critical for mixed-voltage legacy integration-while the SN74LVC541APWR sacrifices noise immunity and voltage flexibility to reduce cost in single-rail 3.3 V designs.

Availability

74VHC541PW,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller GPIO expansion, automated test equipment signal conditioning, and legacy parallel printer port drivers requiring stable component supply across extended temperature ranges.

Supply support for 74VHC541PW,118 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, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.

The 74VHC series targets high-speed, low-power digital interfacing in space-constrained embedded systems, emphasizing rail-to-rail performance, wide supply tolerance, and robust ESD resilience for harsh operating environments.

FAQ

Can 74VHC541PW,118 operate with 3.3 V supply and interface to 5 V peripherals?

Yes. Its inputs tolerate up to 7.0 V regardless of VCC, allowing direct connection to 5 V outputs without level shifters. At VCC = 3.3 V, VOH reaches ≥2.9 V (IO = −4 mA), sufficient to meet 5 V TTL VIH (2.0 V) with margin. Output drive remains compliant with 3.3 V logic standards.

What is the function of the dual output enable pins OE0 and OE1?

Both OE0 (pin 1) and OE1 (pin 19) are active-low enables. All eight outputs (Y0–Y7) enter high-impedance state if either pin is HIGH. Only when both are LOW do outputs actively drive A0–A7. This dual-control scheme prevents accidental bus contention during power-up or reset sequencing.

Does the TSSOP20 package require thermal pad soldering?

No. The SOT360-1 package has no exposed thermal pad. Thermal dissipation relies on copper pour under the 20 leads and standard PCB layout practices. Unlike QFN variants, no thermal vias or solder paste under the body are needed or recommended.

How does Schmitt-trigger input action improve system reliability?

Schmitt-trigger inputs provide hysteresis (~0.5 V at VCC = 5 V), rejecting noise spikes <100 ns wide and preventing multiple transitions on slow-rising signals (e.g., mechanical switches, long cables). This eliminates need for external RC filters and debouncing firmware, reducing latency and code complexity.