Nexperia USA Inc. 74VHC541D,118

Overview

74VHC541D,118 from Nexperia is an octal non-inverting 3-state buffer/line driver in SO20 package, operating from 2.0 V to 5.5 V with CMOS input compatibility, 7 ns typical propagation delay at 5 V/50 pF, and -40 °C to +125 °C temperature range - used for bidirectional bus interfacing in industrial control backplanes and legacy parallel data paths.

For engineers reviewing the 74VHC541D,118 datasheet, 74VHC541D,118 pinout, 74VHC541D,118 application, or 74VHC541D,118 equivalent, key selection criteria include dual active-low output enable (OE0/OE1), Schmitt-trigger inputs for noise immunity, rail-to-rail output swing, high-impedance state leakage < ±10 μA at 125 °C, and SO20 thermal derating (12.3 mW/K above 109 °C).

Technical Context

This device implements eight independent non-inverting buffers, each with two shared active-low 3-state enable inputs (OE0 and OE1) that simultaneously place all outputs into high-impedance mode. Its Si-gate CMOS process ensures balanced tPLH/tPHL propagation delays and supports mixed-voltage interfacing via input tolerance up to 7.0 V independent of VCC.

The functional table confirms strict dual-enable logic: only when both OE0 and OE1 are LOW do outputs Y0–Y7 follow inputs A0–A7; any HIGH on either enable forces all outputs to Z-state. Inputs feature Schmitt-trigger action with hysteresis ≥0.3 V at 5 V, enabling robust operation with slow or noisy signals.

Key Specifications

Pinout & Package

74VHC541D,118 uses the SOT163-1 (SO20) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, gull-wing leads, JEDEC MS-013 compliant. Thermal resistance θJA = 82 K/W (SO20, 2-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74VHC541D,118, the 74VHCT541D,118 offers guaranteed TTL input compatibility at the cost of slightly higher static current, while SN74LVC541APWR reduces supply voltage headroom but lacks the 7 V input tolerance and industrial temperature support critical for legacy system upgrades.

Availability

74VHC541D,118 is available at Aetrix Electronics and suitable for industrial automation backplanes, test equipment signal routing, and automotive body control module bus extension requiring stable component supply across extended temperature ranges.

Supply support for 74VHC541D,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, discrete, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.

The 74VHC series targets industrial and automotive-adjacent systems requiring wide VCC range, robust ESD protection, and extended temperature operation - designed specifically for bus buffering, level translation, and noise-immune signal conditioning.

FAQ

Can 74VHC541D,118 operate with a 3.3 V supply while interfacing with 5 V logic?

Yes. The device operates from 2.0 V to 5.5 V and accepts input voltages up to +7.0 V regardless of VCC. At VCC = 3.3 V, VOH reaches ≥3.1 V (IO = –4 mA), sufficient to drive 5 V TTL inputs, and VIH is 2.7 V min - ensuring reliable recognition of 5 V logic HIGHs without external level shifters.

What is the maximum capacitive load this buffer can drive while maintaining timing specs?

The datasheet specifies timing parameters up to 50 pF load capacitance. Propagation delay increases to 9.0 ns max at 125 °C/50 pF, and output rise/fall times remain within specification. For loads >50 pF, performance degrades predictably: tpd rises ~0.1 ns/pF, and overshoot may require series termination.

How should the unused output enable pin be handled if only one enable is needed?

Both OE0 (pin 1) and OE1 (pin 19) must be held LOW to enable outputs. If only one control signal is available, tie the unused enable pin to GND via a 10 kΩ resistor. Do not leave floating - undefined logic states may cause partial output activation and increased ICC.

Does this part support hot insertion in live backplane applications?

No. While the device features robust ESD protection (HBM >2000 V), it lacks powered-off protection circuitry. Applying signals to inputs or outputs while VCC = 0 V violates absolute maximum ratings (VI = –0.5 V to +7.0 V only when VCC is powered), risking latch-up or permanent damage during hot-plug events.