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 MC74AC541MG

Name: MC74AC541MG
Brand: onsemi
SKU: MC74AC541MG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MC74AC541MG

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.209", 5.30mm Width)

Datasheet:: MC74AC541MG.pdf

Description:: IC BUFF NON-INVERT 6V SOEIAJ-20

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,595

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

Product details

Overview

MC74AC541MG from onsemi is an octal noninverting buffer/line driver with 3-state outputs, designed for memory and address bus interfacing, clock distribution, and microprocessor output port expansion. It operates at 2.0–6.0 V supply, delivers ±24 mA output drive, features flow-through pinout (inputs on one side, outputs on the other), and supports industrial temperature range (−40°C to +85°C).

For engineers reviewing the MC74AC541MG datasheet, pinout, applications, or equivalent options, key selection criteria include 3-state control timing (tPZH/tPLZ < 12.5 ns @ 5 V), input/output voltage thresholds (VIH = 2.1 V min @ 3 V), output drive capability (IOH/IOL = ±24 mA), and SOIC-20W package compatibility with microprocessor bus layouts.

Technical Context

The MC74AC541MG implements TTL-compatible CMOS logic with noninverting data paths and dual independent 3-state enable inputs (OE1, OE2). Its flow-through architecture places all eight inputs on pins 1–8 and outputs on pins 13–20, enabling direct connection to microprocessor data/address buses without signal layer crossover.

Each output supports high-impedance state when either OE1 or OE2 is HIGH, and drives rail-to-rail logic levels with VOH ≥ 2.9 V (VCC = 3.0 V) and VOL ≤ 0.1 V (IOL = 50 µA), while maintaining DC input leakage < ±1.0 µA and quiescent ICC ≤ 80 µA at VCC = 5.5 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.0 V to 6.0 V - supports mixed-voltage system interfacing including 3.3 V and 5 V logic domains
Output Drive Current	±24 mA - sufficient to drive standard TTL loads or multiple CMOS inputs without external buffering
Propagation Delay	6.0 ns max (tPLH/tPHL @ VCC = 5.0 V, CL = 50 pF) - enables reliable operation in high-speed bus applications up to ~80 MHz
3-State Enable Time	9.5 ns max (tPZH @ VCC = 5.0 V) - ensures fast bus turnaround during bidirectional data transfers
Input Thresholds	VIH = 2.1 V min @ 3.0 V; VIL = 0.9 V max @ 3.0 V - provides noise margin > 0.6 V under nominal 3 V operation
Power Dissipation Cap.	30 pF - low dynamic power consumption supports energy-efficient bus driving in portable/embedded systems

Pinout & Package

MC74AC541MG is housed in a Pb-free SOIC-20 Wide Body (Case 751D) package measuring 12.8 mm × 7.5 mm × 2.5 mm, with 1.27 mm pitch and gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Data Inputs (D1–D8)	Noninverting logic inputs accepting 2.0–6.0 V CMOS/TTL-compatible signals
9, 10	3-State Enable Inputs (OE1, OE2)	Active-LOW enables; either HIGH forces all outputs into high-impedance state
11	GND	Ground reference for all I/O and internal circuitry
12	NC	No connect - internally unconnected, must be left floating or tied to GND per layout best practice
13–20	Data Outputs (Y1–Y8)	Noninverting buffered outputs with ±24 mA sink/source capability and 3-state control
20	VCC	Positive supply rail (2.0–6.0 V); decoupling capacitor required within 1 cm of this pin

Key Features

Feature	Design Value
Flow-through pinout	Inputs on left side (pins 1–8), outputs on right side (pins 13–20) - eliminates PCB trace crossovers in microprocessor bus interfaces
Dual 3-state enables	Independent OE1/OE2 inputs allow selective disabling of two 4-bit groups - supports nibble-wise bus arbitration
High-output drive	±24 mA per output - directly drives 10 LSTTL loads or 20+ CMOS inputs without fanout buffers
Pb-free construction	RoHS-compliant SOIC-20W package with matte tin lead finish - compatible with lead-free reflow profiles (J-STD-020)
Wide supply range	2.0–6.0 V operation - interoperable across 3.3 V microcontrollers and legacy 5 V peripheral buses

Applications

Memory Address Buffering	Microprocessor Output Port
Use Scenario: Driving 16-bit address bus from an 8-bit microcontroller with external RAM/ROM. IC Role / Device Role / Timing Role: Noninverting octal buffer providing level translation and current gain between MCU port and memory address lines. Use Value: Eliminates need for discrete transistor arrays; flow-through pinout simplifies PCB routing and reduces signal skew across address bits.	Use Scenario: Expanding GPIO capability of an 8-bit MCU to drive multiple peripherals via shared data bus. IC Role / Device Role / Timing Role: Bidirectional bus transceiver interface with 3-state control synchronized to MCU WR/RD strobes. Use Value: Dual OE inputs enable hardware-selectable 4-bit segments, allowing concurrent access to two peripheral devices without software overhead.
Clock Distribution	Industrial Control Bus Interface
Use Scenario: Distributing a 25 MHz system clock to multiple synchronous logic blocks with matched trace lengths. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer isolating source from capacitive loading of downstream logic. Use Value: 6 ns max propagation delay and 30 pF CPD ensure minimal jitter addition (< 100 ps) and stable edge integrity across all eight outputs.	Use Scenario: Interfacing PLC CPU module to 24 V digital I/O cards using optocoupler-isolated bus lines. IC Role / Device Role / Timing Role: Level-shifting buffer translating 5 V logic to 24 V interface drivers while providing galvanic isolation support. Use Value: ±24 mA drive sustains logic high under 1 kΩ pull-up loads; wide VCC range accommodates 5 V controller rails feeding isolated 24 V field-side translators.

Memory Address Buffering

Microprocessor Output Port

Use Scenario: Driving 16-bit address bus from an 8-bit microcontroller with external RAM/ROM.

IC Role / Device Role / Timing Role: Noninverting octal buffer providing level translation and current gain between MCU port and memory address lines.

Use Value: Eliminates need for discrete transistor arrays; flow-through pinout simplifies PCB routing and reduces signal skew across address bits.

Use Scenario: Expanding GPIO capability of an 8-bit MCU to drive multiple peripherals via shared data bus.

IC Role / Device Role / Timing Role: Bidirectional bus transceiver interface with 3-state control synchronized to MCU WR/RD strobes.

Use Value: Dual OE inputs enable hardware-selectable 4-bit segments, allowing concurrent access to two peripheral devices without software overhead.

Clock Distribution

Industrial Control Bus Interface

Use Scenario: Distributing a 25 MHz system clock to multiple synchronous logic blocks with matched trace lengths.

IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer isolating source from capacitive loading of downstream logic.

Use Value: 6 ns max propagation delay and 30 pF CPD ensure minimal jitter addition (< 100 ps) and stable edge integrity across all eight outputs.

Use Scenario: Interfacing PLC CPU module to 24 V digital I/O cards using optocoupler-isolated bus lines.

IC Role / Device Role / Timing Role: Level-shifting buffer translating 5 V logic to 24 V interface drivers while providing galvanic isolation support.

Use Value: ±24 mA drive sustains logic high under 1 kΩ pull-up loads; wide VCC range accommodates 5 V controller rails feeding isolated 24 V field-side translators.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC74ACT541DWG	TTL-compatible inputs (VIH = 2.0 V min @ 4.5 V); identical pinout and AC specs	Better noise immunity in noisy industrial environments due to tighter VIH/VIL thresholds	Select when interfacing with legacy TTL or mixed-signal systems where input threshold consistency is critical
SN74LVC244APWR	3.3 V only (1.65–3.6 V); lower drive (±24 mA same, but VOL = 0.55 V @ 24 mA)	Optimized for modern low-voltage embedded systems; not suitable for 5 V bus interfacing	Choose for cost-sensitive 3.3 V-only designs requiring AEC-Q200 grade; requires level shifters for 5 V compatibility

Compared with MC74AC541MG, MC74ACT541DWG offers improved input noise margin in electrically harsh settings but shares identical timing and drive performance, while SN74LVC244APWR reduces power and cost in pure 3.3 V domains but sacrifices 5 V interoperability and output voltage swing.

Availability

MC74AC541MG is available at Aetrix Electronics and suitable for memory subsystem design, microprocessor bus expansion, clock distribution networks, and industrial I/O interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC74AC541MG 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74AC541MG belongs to onsemi's 74AC logic family, engineered for high-speed, low-power bus interface applications where robust DC characteristics, precise timing, and wide supply voltage tolerance are essential.

FAQ

What is the maximum operating supply voltage for MC74AC541MG?

The MC74AC541MG supports a maximum DC supply voltage of +6.5 V, with recommended operation up to 6.0 V. Exceeding 6.5 V risks permanent damage per absolute maximum ratings. For reliable long-term use, maintain VCC within 2.0–6.0 V per the Recommended Operating Conditions table in the datasheet. The MC74AC541MG exhibits stable logic behavior and full output drive capability across this entire range.

Does MC74AC541MG support true bidirectional data transfer?

No, the MC74AC541MG is a unidirectional noninverting buffer - data flows only from inputs (pins 1–8) to outputs (pins 13–20). It does not incorporate internal direction control or bus transceiver logic. For bidirectional operation, external control of OE1/OE2 combined with system-level handshaking is required; the MC74AC541MG itself lacks automatic direction sensing or internal feedback paths.

What is the function of pin 12 on MC74AC541MG?

Pin 12 on the MC74AC541MG is a no-connect (NC) terminal - it is not bonded internally and serves no electrical function. Per onsemi's datasheet and mechanical drawings, this pin must remain unconnected in PCB layout. It may be left floating or tied to GND for mechanical stability, but must never be connected to VCC, signal lines, or active circuitry.

How does MC74AC541MG differ from MC74AC540MG?

The MC74AC541MG provides noninverting outputs, whereas the MC74AC540MG delivers inverted outputs - both share identical pinout, timing, drive strength, and 3-state control architecture. This functional difference determines signal polarity alignment in bus systems: MC74AC541MG preserves input logic states at outputs, while MC74AC540MG complements them. No other electrical or packaging distinctions exist between the two.

Is MC74AC541MG qualified for automotive applications?

The base MC74AC541MG is not AEC-Q100 qualified. However, onsemi offers the automotive-grade variant MC74AC541DWR2G−Q (with −Q suffix), which undergoes additional stress testing, PPAP documentation, and controlled manufacturing per automotive requirements. Standard MC74AC541MG is rated for industrial temperature range (−40°C to +85°C) and intended for commercial/industrial use unless explicitly specified as −Q.

MC74AC541MG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74AC

Package/Case:: 20-SOIC (0.209", 5.30mm Width)

Packaging:: Tube

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:: 24mA, 24mA

Voltage - Supply:: 2V ~ 6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOEIAJ-20

MC74AC541MG FAQ

1.How can I place an order for MC74AC541MG through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74AC541MG 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 MC74AC541MG reliable?

The price and inventory of MC74AC541MG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74AC541MG is usually 5 days.

3.What payment methods are accepted for MC74AC541MG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74AC541MG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74AC541MG?

MC74AC541MG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74AC541MG 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 MC74AC541MG?

For technical support, including MC74AC541MG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74AC541MG requirements.

6.How does Aetrix verify that MC74AC541MG is sourced from the original manufacturer or authorized distributors?

All MC74AC541MG 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 MC74AC541MG meets industry standards.

7.What is the process for return or replacement of MC74AC541MG?

All MC74AC541MG units undergo pre-shipment inspection (PSI). If there is an issue with MC74AC541MG, 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 MC74AC541MG part is unused and in its original packaging.

Return procedure for MC74AC541MG:

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…