Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi MC74VHCT541ADWR2

Name: MC74VHCT541ADWR2
Brand: onsemi
SKU: MC74VHCT541ADWR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MC74VHCT541ADWR2

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: MC74VHCT541ADWR2.pdf

Description:: IC BUF NON-INVERT 5.5V 20SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,095

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MC74VHCT541ADWR2 from onsemi is an octal non-inverting buffer/line driver with 3-state outputs, designed for TTL-level input compatibility and CMOS-level output drive. It operates from 4.5 V to 5.5 V, features ±8 mA output drive, 7.5 ns typical propagation delay at V_CC = 5 V, and supports bus-oriented applications requiring bidirectional data isolation in industrial control systems.

For engineers reviewing the MC74VHCT541ADWR2 datasheet, pinout, applications, or equivalent options, key selection criteria include 3-state output timing, TTL-compatible input thresholds, rail-to-rail CMOS output swing, and SOIC-20W package thermal performance in high-density PCB layouts.

Technical Context

This device implements eight independent non-inverting buffers, each with separate 3-state enable control (active-low OE). Input logic thresholds are TTL-compatible (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V), while outputs swing fully to V_CC or GND with CMOS drive strength. The architecture enables clean bus driving without signal contention during direction switching.

Propagation delay is tightly controlled across voltage and temperature (7.5 ns typical, 13 ns max at V_CC = 5 V, T_A = 25 °C), and DC parameters include I_OH = –8 mA at V_OH = 4.4 V and I_OL = 8 mA at V_OL = 0.55 V - ensuring robust noise margin and fanout capability in mixed-signal backplanes.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL/CMOS systems and tolerance against rail droop.
Propagation Delay	7.5 ns typical at V_CC = 5 V - enables reliable operation in 10–15 MHz address/data bus cycles.
Output Drive	±8 mA - supports direct driving of 10 LSTTL loads or termination-matched transmission lines.
Input Thresholds	V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - guarantees interoperability with legacy 5 V TTL logic families.
Quiescent Current	4 µA max at V_CC = 5.5 V - minimizes standby power in always-on industrial modules.
ESD Rating	HBM ±2 kV - provides baseline protection against handling-induced discharge in assembly environments.

Pinout & Package

MC74VHCT541ADWR2 is housed in a 20-pin SOIC Wide-body (SOIC-20W) package with 0.600-inch body width and 1.27 mm pitch, optimized for thermal dissipation in continuous bus-driver operation.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 6, 7, 8, 9	Inputs (A1–A8)	TTL-compatible digital inputs accepting 0–5 V signals with hysteresis-free thresholds.
11, 12, 13, 14, 15, 16, 17, 18	Outputs (Y1–Y8)	CMOS push-pull outputs capable of sourcing/sinking ±8 mA with rail-to-rail swing.
19	OE (Active-Low Enable)	Global 3-state control: low = outputs active, high = outputs high-impedance.
10	GND	Signal and power reference ground plane connection point.
20	V_CC	Positive supply rail for internal logic and output drivers (4.5–5.5 V).

Key Features

Feature	Design Value
TTL-Compatible Inputs	Ensures seamless integration with legacy 5 V microcontrollers, FPGAs, and ASICs without level-shifting circuitry.
High-Drive CMOS Outputs	Delivers ±8 mA per channel to drive long traces, multiple loads, or unterminated stubs in industrial backplanes.
Low Propagation Delay	7.5 ns typical delay supports synchronous data transfer up to 15 MHz without timing closure issues.
Wide Supply Range	4.5–5.5 V operation accommodates aging power supplies and transient rail variations in factory automation equipment.

Applications

Industrial PLC Backplane Interface	Legacy Microcontroller Bus Expansion
Use Scenario: Interfacing a 5 V microcontroller to isolated I/O modules via a shared parallel bus in programmable logic controllers. IC Role / Device Role / Timing Role: Octal buffer isolating CPU address/data lines from field-side peripherals while enabling bidirectional bus control via OE. Use Value: Prevents signal contention during bus arbitration and maintains timing integrity with sub-10 ns delay across all eight channels.	Use Scenario: Expanding GPIO count of an older 8051-based controller using external latch and memory-mapped I/O. IC Role / Device Role / Timing Role: Non-inverting line driver translating TTL-level control signals to CMOS-compatible levels for peripheral enable and select lines. Use Value: Eliminates need for discrete level shifters and reduces BOM count while preserving setup/hold timing margins.
Test Equipment Signal Conditioning	Automated Manufacturing Fixture Control
Use Scenario: Driving calibrated analog multiplexer control lines and digital stimulus patterns in automated test equipment (ATE) racks. IC Role / Device Role / Timing Role: Precision timing buffer ensuring simultaneous edge alignment across multiple control paths with matched propagation delay. Use Value: Reduces skew between parallel control signals to <1 ns, critical for synchronized multi-channel DUT stimulus.	Use Scenario: Controlling pneumatic valves, solenoids, and status LEDs in factory-floor test jigs using a centralized 5 V logic controller. IC Role / Device Role / Timing Role: High-current buffer stage interfacing low-drive MCU pins to higher-power interface circuits. Use Value: Sustains 8 mA per output continuously without thermal derating, supporting 24/7 production-line operation.

Industrial PLC Backplane Interface

Legacy Microcontroller Bus Expansion

Use Scenario: Interfacing a 5 V microcontroller to isolated I/O modules via a shared parallel bus in programmable logic controllers.

IC Role / Device Role / Timing Role: Octal buffer isolating CPU address/data lines from field-side peripherals while enabling bidirectional bus control via OE.

Use Value: Prevents signal contention during bus arbitration and maintains timing integrity with sub-10 ns delay across all eight channels.

Use Scenario: Expanding GPIO count of an older 8051-based controller using external latch and memory-mapped I/O.

IC Role / Device Role / Timing Role: Non-inverting line driver translating TTL-level control signals to CMOS-compatible levels for peripheral enable and select lines.

Use Value: Eliminates need for discrete level shifters and reduces BOM count while preserving setup/hold timing margins.

Test Equipment Signal Conditioning

Automated Manufacturing Fixture Control

Use Scenario: Driving calibrated analog multiplexer control lines and digital stimulus patterns in automated test equipment (ATE) racks.

IC Role / Device Role / Timing Role: Precision timing buffer ensuring simultaneous edge alignment across multiple control paths with matched propagation delay.

Use Value: Reduces skew between parallel control signals to <1 ns, critical for synchronized multi-channel DUT stimulus.

Use Scenario: Controlling pneumatic valves, solenoids, and status LEDs in factory-floor test jigs using a centralized 5 V logic controller.

IC Role / Device Role / Timing Role: High-current buffer stage interfacing low-drive MCU pins to higher-power interface circuits.

Use Value: Sustains 8 mA per output continuously without thermal derating, supporting 24/7 production-line operation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HCT541PW	Same logic function and pinout; slightly higher I_OL (16 mA vs. 8 mA), wider V_CC range (2–6 V).	Supports mixed-voltage systems (e.g., 3.3 V control + 5 V load); less suitable for strict 5 V-only designs with tight current budgeting.	Select when broader supply flexibility or higher sink current is required; verify layout compatibility with TSSOP-20 footprint.
74VHC541M	Lower drive (±4 mA), faster propagation (5.5 ns typ), but no TTL input thresholds - requires CMOS-level inputs only.	Not interoperable with legacy TTL sources; best suited for pure CMOS systems where speed outweighs compatibility.	Choose only if system uses exclusively CMOS logic and demands sub-6 ns timing; avoid in mixed-logic environments.

Compared with SN74HCT541PW and 74VHC541M, the MC74VHCT541ADWR2 uniquely balances TTL input compatibility, moderate drive strength, and SOIC-20W thermal reliability - making it optimal for industrial backplane interfaces where legacy support and sustained current delivery are both essential.

Availability

MC74VHCT541ADWR2 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, legacy microcontroller bus expansion, and automated manufacturing fixture control requiring stable component supply and long-term lifecycle assurance.

Supply support for MC74VHCT541ADWR2 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

onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHCT541ADWR2 belongs to the VHCT logic family, engineered specifically for high-speed, low-power 5 V TTL-to-CMOS interfacing in mission-critical industrial control and instrumentation systems.

FAQ

What is the maximum operating temperature for the MC74VHCT541ADWR2?

The MC74VHCT541ADWR2 is rated for operation from –40 °C to +85 °C ambient temperature. This industrial-grade temperature range ensures reliable performance in factory automation enclosures, motor control cabinets, and outdoor-rated test equipment where thermal cycling and extended runtime are common. The SOIC-20W package contributes to stable thermal behavior under continuous 8 mA per-output loading.

Does the MC74VHCT541ADWR2 support hot insertion?

The MC74VHCT541ADWR2 does not include built-in hot-swap protection features such as power-up sequencing control or I_ON current limiting. While its 3-state outputs allow safe bus disconnection during power transitions, full hot-insertion capability requires external circuitry like series resistors or dedicated hot-swap controllers. Always verify bus arbitration timing and voltage ramp rates before deploying MC74VHCT541ADWR2 in live-backplane systems.

Can the MC74VHCT541ADWR2 drive LED indicators directly?

Yes, the MC74VHCT541ADWR2 can drive standard 5 V LEDs directly when configured in active-low sinking mode (anode to V_CC, cathode to Yx output). With 8 mA sink capability and 0.55 V V_OL, it supports typical red/green LEDs with 220 Ω–470 Ω current-limiting resistors. Avoid sourcing-mode LED drive due to lower I_OH margin; for high-brightness or multi-LED clusters, use MC74VHCT541ADWR2 as a switch controlling an external transistor stage.

Is the MC74VHCT541ADWR2 RoHS compliant and lead-free?

Yes, the MC74VHCT541ADWR2 is RoHS compliant and manufactured with lead-free terminations per JEDEC J-STD-020. Its SOIC-20W package uses matte tin plating over copper leadframe, qualified for reflow soldering profiles up to 260 °C peak. Full compliance documentation, including material declarations and test reports, is available through onsemi's quality portal and Aetrix Electronics' component traceability system.

How does the MC74VHCT541ADWR2 differ from the MC74VHCT244ADWR2?

The MC74VHCT541ADWR2 contains eight non-inverting buffers with a single active-low OE pin, while the MC74VHCT244ADWR2 integrates two groups of four non-inverting buffers, each with independent active-low OE control (OE1 and OE2). This dual-enable architecture allows selective activation of subsets of drivers - useful in split-bus or segmented I/O applications. For unified bus control, MC74VHCT541ADWR2 simplifies routing and reduces control signal count.

MC74VHCT541ADWR2 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VHCT

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 8mA, 8mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SOIC

MC74VHCT541ADWR2 FAQ

1.How can I place an order for MC74VHCT541ADWR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHCT541ADWR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MC74VHCT541ADWR2 reliable?

The price and inventory of MC74VHCT541ADWR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHCT541ADWR2 is usually 5 days.

3.What payment methods are accepted for MC74VHCT541ADWR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHCT541ADWR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHCT541ADWR2?

MC74VHCT541ADWR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHCT541ADWR2 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MC74VHCT541ADWR2?

For technical support, including MC74VHCT541ADWR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHCT541ADWR2 requirements.

6.How does Aetrix verify that MC74VHCT541ADWR2 is sourced from the original manufacturer or authorized distributors?

All MC74VHCT541ADWR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC74VHCT541ADWR2 meets industry standards.

7.What is the process for return or replacement of MC74VHCT541ADWR2?

All MC74VHCT541ADWR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHCT541ADWR2, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MC74VHCT541ADWR2 part is unused and in its original packaging.

Return procedure for MC74VHCT541ADWR2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…