My Inquiry
My Account
onsemi MC74AC541DWG
- Part No.:
- MC74AC541DWG
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC74AC541DWG.pdf
- Description:
- IC BUFF NON-INVERT 6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,707
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC74AC541DWG 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 from 2.0 V to 6.0 V, 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 MC74AC541DWG datasheet, pinout, applications, or equivalent options, key selection criteria include 3-state control timing (tPZH/tPLZ), noninverting logic function, SOIC-20W package compatibility, and DC/AC performance at 3.3 V and 5.0 V supply rails.
Technical Context
The MC74AC541DWG implements eight independent noninverting buffers, each with dual 3-state enable inputs (OE1 and OE2) that must both be low to activate outputs. Its flow-through architecture places all eight inputs on pins 1–8 and outputs on pins 13–20, enabling direct microprocessor bus connection without trace crossing.
It uses AC-series CMOS logic with TTL-compatible input thresholds only in ACT variants; the MC74AC541DWG requires VIH ≥ 2.1 V at VCC = 4.5 V and exhibits propagation delays of 4.0 ns (typ) and 6.5 ns (max) at 5.0 V/50 pF, with output enable/disable times under 12 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Octal noninverting buffer with 3-state outputs |
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing |
| Output Drive | ±24 mA - sufficient to drive 50 Ω transmission lines or multiple TTL loads |
| Propagation Delay | 6.5 ns max at 5.0 V/50 pF - enables reliable operation up to ~100 MHz data rates |
| 3-State Enable Time | 9.5 ns max (tPZH/tPZL at 5.0 V) - ensures fast bus arbitration in shared-data systems |
| Input Capacitance | 4.5 pF typical - minimizes loading on upstream drivers and preserves signal integrity |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded and control applications |
Pinout & Package
MC74AC541DWG is housed in a Pb-free SOIC-20 wide-body package (Case 751D), 12.8 mm × 7.5 mm × 2.65 mm, with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Buffer Inputs (D1–D8) | Noninverting data inputs; accept 0–VCC logic levels |
| 9, 10 | 3-State Enables (OE1, OE2) | Active-low dual-enable; both must be LOW for output drive |
| 11 | GND | Ground reference for all I/O and internal circuitry |
| 12 | VCC | Positive supply rail (2.0–6.0 V); powers all buffers and control logic |
| 13–20 | Buffer Outputs (Y1–Y8) | Noninverting buffered outputs; high-impedance when OE1 or OE2 is HIGH |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Inputs on left (pins 1–8), outputs on right (pins 13–20) - simplifies PCB routing for microprocessor data/address buses |
| 3-state dual-enable logic | OE1 and OE2 require simultaneous LOW assertion - prevents partial bus contention during enable transitions |
| ±24 mA output sink/source | Drives 15+ TTL loads or terminates 50 Ω lines - eliminates need for external line drivers in medium-speed buses |
| Pb-free SOIC-20W package | RoHS-compliant, JEDEC-standard footprint - drop-in compatible with legacy 74AC/ACT designs |
| Wide VCC range (2.0–6.0 V) | Operates across 3.3 V and 5.0 V systems without level shifters - reduces BOM count in mixed-supply boards |
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 expanding address width while maintaining timing integrity via matched propagation delay. Use Value: Eliminates address skew between byte lanes; 6.5 ns max tPLH/tPHL ensures setup/hold compliance at 10 MHz bus clocks. |
Use Scenario: Expanding GPIO capability of an MCU to drive LED arrays, relays, or peripheral select lines. IC Role / Device Role / Timing Role: 3-state output port enabling time-multiplexed control of multiple peripherals on a shared bus. Use Value: Dual OE inputs allow synchronized enable/disable across all 8 channels, preventing glitch-induced peripheral activation. |
| System Clock Distribution | Industrial Bus Transceiver Interface |
|
Use Scenario: Fan-out of a 5 MHz system clock to multiple synchronous peripherals (ADCs, DACs, timers). IC Role / Device Role / Timing Role: Low-skew, noninverting buffer isolating clock source from capacitive load of downstream devices. Use Value: 4.5 pF input capacitance and 24 mA drive maintain clean edges into 50 pF loads; jitter added < 50 ps (typ). |
Use Scenario: Bidirectional data buffering between a PLC CPU and fieldbus modules using shared RS-485 or CAN physical layer. IC Role / Device Role / Timing Role: Direction-controlled bus driver providing isolation and drive strength for noise-prone industrial environments. Use Value: High-impedance state during bus arbitration prevents signal collisions; ±24 mA drive overcomes cable attenuation up to 100 m. |
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 at VCC = 4.5 V); otherwise identical pinout, timing, and drive | Better suited for mixed-logic systems with legacy TTL sources or noisy environments requiring higher noise margin | Select when driving from 5 V TTL or LVTTL sources; retains same PCB layout and firmware interface |
| SN74LVC244APWR | 3.3 V only (1.65–3.6 V), lower drive (±24 mA), different pinout (no dual OE), smaller TSSOP-20 package | Optimized for low-voltage portable/embedded systems; lacks industrial temp range and 5 V tolerance | Choose for space-constrained 3.3 V designs where 5 V operation is unnecessary and dual-OE control is not required |
Compared with MC74ACT541DWG, the MC74AC541DWG offers higher input threshold margins at 3.3 V but lacks TTL compatibility; versus SN74LVC244APWR, it provides wider voltage range and dual-OE control at the cost of larger SOIC footprint and no 1.8 V support.
Availability
MC74AC541DWG is available at Aetrix Electronics and suitable for industrial control systems, embedded microprocessor interfaces, and memory subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC74AC541DWG 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 manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MC74AC541DWG belongs to onsemi's 74AC logic family, engineered for high-speed, low-power, pin-compatible upgrades to legacy 74LS and 74F logic in industrial and computing infrastructure applications.
FAQ
What is the recommended operating voltage range for MC74AC541DWG?
The MC74AC541DWG is specified to operate from 2.0 V to 6.0 V DC supply voltage. At 3.3 V, it meets all AC/DC specifications including 6.5 ns max propagation delay and ±24 mA output drive. Operation at 2.0 V is supported but reduces speed and noise margin; 6.0 V is the absolute maximum per Absolute Maximum Ratings.
Does MC74AC541DWG support TTL-level input signals?
No, the MC74AC541DWG does not guarantee TTL-compatible inputs. Its VIH minimum is 2.1 V at VCC = 4.5 V, whereas standard TTL requires ≥ 2.0 V. For guaranteed TTL compatibility, use MC74ACT541DWG, which specifies VIH = 2.0 V min across its operating range.
How are the 3-state enable inputs configured on MC74AC541DWG?
The MC74AC541DWG uses two active-low 3-state enable inputs: OE1 (pin 9) and OE2 (pin 10). Both must be driven LOW simultaneously to enable the eight noninverting outputs. If either is HIGH, all outputs enter high-impedance state - this dual-enable structure prevents partial bus activation during power-up or control glitches.
What is the thermal resistance (θJA) of the SOIC-20W package used by MC74AC541DWG?
The SOIC-20W (Case 751D) package for MC74AC541DWG has a junction-to-ambient thermal resistance (θJA) of 96°C/W, as specified in the Maximum Ratings table. This value assumes standard JEDEC test board conditions (2S2P copper layers) and is critical for calculating maximum allowable power dissipation at elevated ambient temperatures.
Is MC74AC541DWG pin-compatible with MC74AC540DWG?
Yes, MC74AC541DWG is pin-compatible with MC74AC540DWG - both use identical SOIC-20W pinout and package dimensions. The only functional difference is logic polarity: MC74AC541DWG provides noninverting outputs, while MC74AC540DWG provides inverting outputs. No PCB changes are needed when swapping between them.
MC74AC541DWG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 20-SOIC
MC74AC541DWG FAQ
1.How can I place an order for MC74AC541DWG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74AC541DWG 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 MC74AC541DWG reliable?
The price and inventory of MC74AC541DWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74AC541DWG is usually 5 days.
3.What payment methods are accepted for MC74AC541DWG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74AC541DWG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74AC541DWG?
MC74AC541DWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74AC541DWG 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 MC74AC541DWG?
For technical support, including MC74AC541DWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74AC541DWG requirements.
6.How does Aetrix verify that MC74AC541DWG is sourced from the original manufacturer or authorized distributors?
All MC74AC541DWG 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 MC74AC541DWG meets industry standards.
7.What is the process for return or replacement of MC74AC541DWG?
All MC74AC541DWG units undergo pre-shipment inspection (PSI). If there is an issue with MC74AC541DWG, 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 MC74AC541DWG part is unused and in its original packaging.
Return procedure for MC74AC541DWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC74AC541DWG Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
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…
