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onsemi MC74LVX541DW
- Part No.:
- MC74LVX541DW
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC74LVX541DW.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,382
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Product details
Overview
MC74LVX541DW from onsemi is an advanced high-speed CMOS octal noninverting bus buffer with 3-state outputs, designed for voltage-level translation between 3.0 V and 5.0 V systems. It operates from 2.0 V to 3.6 V, delivers 5.0 ns typical propagation delay at 3.3 V, supports ±25 mA output drive, and features input tolerance up to 6.5 V - enabling robust interfacing in mixed-voltage industrial control backplanes.
For engineers reviewing the MC74LVX541DW datasheet, pinout, applications, or equivalent options, key selection criteria include its dual output-enable architecture (OE1/OE2), high noise immunity (28% VCC), low dynamic noise (VOLP ≤ 1.2 V), and SOIC-20 Pb-free package compatibility with legacy 74-series logic layouts.
Technical Context
The MC74LVX541DW implements a three-stage internal buffer architecture that ensures stable output transitions and high noise margin. Its dual independent output-enable inputs (OE1 and OE2) allow selective tri-state control of all eight outputs simultaneously or in split groups, supporting flexible bus arbitration schemes in multi-master systems.
Input pins tolerate up to 6.5 V regardless of VCC, enabling safe 5.0 V-tolerant operation while powered from 3.3 V - critical for bridging legacy TTL peripherals to modern low-voltage microcontrollers. Propagation delays are balanced across channels (tOSLH/tOSHL ≤ 1.0 ns), minimizing skew in parallel data paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 3.6 V - enables direct integration into 3.3 V embedded systems without level-shifting circuitry. |
| tPD (Typ) | 5.0 ns at VCC = 3.3 V, CL = 15 pF - supports >100 MHz data rates in synchronous bus applications. |
| IOUT (Max) | ±25 mA per output - drives standard CMOS/TTL loads without external buffers in point-to-point links. |
| VIN Tolerance | −0.5 V to +6.5 V - allows safe connection to 5 V signals while VCC = 3.3 V, eliminating external clamping diodes. |
| VIH/VIL | 1.50 V / 0.50 V min/max at VCC = 2.0 V - ensures reliable logic recognition across full supply range and temperature. |
| IOZ (Max) | ±2.5 µA at VCC = 3.6 V - guarantees minimal leakage current during 3-state hold, preserving bus integrity in idle states. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade operation in programmable logic controllers and motor drives. |
Pinout & Package
MC74LVX541DW is housed in a 20-pin SOIC wide-body package (Case 751D), measuring 12.8 mm × 7.5 mm × 2.5 mm, with 1.27 mm pitch and Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-high output enable controls - both must be low for Y1–Y8 to drive; either high places all outputs in high-impedance state. |
| 2–9, 11–18 | A1–A8, Y1–Y8 | Noninverting data inputs and corresponding buffered outputs - pin-paired (A1→Y1, A2→Y2, etc.) for straight-through routing. |
| 10 | GND | Ground reference for all I/O and internal logic - requires low-inductance connection to minimize switching noise. |
| 20 | VCC | Positive supply rail - decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed 3-state buffering | 5.0 ns tPD at 3.3 V enables use in 100+ MHz address/data buses without timing closure issues. |
| Dual independent output enables | OE1 and OE2 provide redundant or split-bus control - supports fault-tolerant enable schemes in safety-critical modules. |
| 5.0 V-tolerant inputs | Accepts 0–6.5 V input signals at any VCC (2.0–3.6 V), eliminating level shifters in mixed-voltage sensor interface designs. |
| Low dynamic output noise | VOLP ≤ 1.2 V ensures <100 mV ground bounce under full capacitive load, preserving signal integrity in dense PCB layouts. |
| Latchup immunity | Exceeds 300 mA per JEDEC JESD78 - prevents destructive latchup during hot-swap or ESD events in field-replaceable modules. |
Applications
| Industrial PLC Backplane Interface | Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Interfacing 5 V legacy I/O modules to a 3.3 V ARM Cortex-M7-based PLC CPU via shared parallel bus. IC Role / Device Role / Timing Role: Noninverting octal buffer with 5 V-tolerant inputs and 3-state outputs, providing bidirectional voltage translation and bus isolation. Use Value: Eliminates discrete level shifters and reduces BOM count by 8 parts while maintaining <5 ns timing margin across all 8 data lines. | Use Scenario: Expanding limited GPIO count of an STM32H743 to drive 8-channel LED indicators and status relays in medical diagnostic equipment. IC Role / Device Role / Timing Role: Output driver buffer with dual OE control, allowing software-selectable activation of indicator banks without hardware reconfiguration. Use Value: Enables independent control of two 4-LED groups using OE1/OE2, reducing firmware complexity and eliminating need for additional GPIO expanders. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Buffering sensor readout signals from 5 V analog front-ends to a 3.3 V automotive MCU in a body control unit operating at −40°C to +85°C. IC Role / Device Role / Timing Role: Voltage-translating bus buffer with industrial temperature rating and high noise immunity (28% VCC). Use Value: Maintains clean signal transmission despite engine bay EMI, with no external protection components required due to 2000 V HBM ESD rating. | Use Scenario: Driving multiple DUT inputs simultaneously from a single pattern generator channel in automated test equipment. IC Role / Device Role / Timing Role: Fanout buffer with matched propagation delays (≤1.0 ns skew) and low-output capacitance (6.0 pF in 3-state). Use Value: Ensures simultaneous edge arrival across 8 test points, improving measurement repeatability and reducing setup time for parallel functional testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Lower ICC (max 10 µA vs. 40 µA), identical VCC range and pinout; tPD = 5.2 ns (typ) at 3.3 V. | Optimized for ultra-low static power in battery-backed systems; lacks 6.5 V input tolerance. | Select when quiescent current is critical and all connected signals remain ≤3.6 V. |
| 74ALVC541MTCX | Wider VCC range (1.65–3.6 V), faster tPD (4.2 ns typ), but only 3.6 V input tolerant; TSSOP-20 only. | Better suited for sub-2.0 V FPGA I/O interfaces; incompatible with 5 V peripheral interfacing. | Choose for high-speed, low-voltage FPGA-to-peripheral bridging where 5 V tolerance is unnecessary. |
Compared with SN74LVC541APWR and 74ALVC541MTCX, the MC74LVX541DW uniquely combines 5 V input tolerance, industrial temperature range, and SOIC-20 footprint - making it the only option among the three qualified for legacy 5 V peripheral integration in space-constrained industrial controllers.
Availability
MC74LVX541DW is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller GPIO expansion, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MC74LVX541DW 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 MC74LVX541DW belongs to onsemi's LVX low-voltage logic family, engineered specifically for mixed-voltage system interfacing with emphasis on 3.3 V/5 V translation, noise immunity, and industrial reliability.
FAQ
What is the maximum input voltage the MC74LVX541DW can safely accept?
The MC74LVX541DW accepts DC input voltages from −0.5 V to +6.5 V regardless of VCC setting - a key feature enabling direct connection to 5 V logic signals while operating from a 3.3 V supply. This eliminates external clamping diodes in mixed-voltage designs and is verified per Absolute Maximum Ratings in the official onsemi datasheet Rev. 6.
Does the MC74LVX541DW support true bidirectional data flow?
No, the MC74LVX541DW is a unidirectional noninverting buffer: data flows only from A1–A8 inputs to Y1–Y8 outputs. It does not support automatic direction sensing or bus transceiver functionality. For bidirectional operation, a separate transceiver IC such as the MC74LVX245 must be used instead of the MC74LVX541DW.
What is the function of OE1 and OE2 on the MC74LVX541DW?
OE1 and OE2 are active-high output enable inputs that jointly control the 3-state output drivers. When either OE1 or OE2 is high, all eight Y outputs enter high-impedance state. Both must be low for normal noninverting buffering. This dual-enable architecture allows fail-safe bus release or split-bank control in the MC74LVX541DW.
Can the MC74LVX541DW operate reliably at 2.0 V supply voltage?
Yes, the MC74LVX541DW is fully specified down to 2.0 V VCC per Recommended Operating Conditions. At 2.0 V, VIH is guaranteed ≥1.50 V and VOL ≤ 0.1 V at 50 µA load, ensuring noise margins and logic compatibility in ultra-low-power portable systems using the MC74LVX541DW.
Is the MC74LVX541DW pin-compatible with standard 74-series octal buffers?
The MC74LVX541DW is functionally and pin-compatible with industry-standard 74HC541 and 74LS541 devices in SOIC-20 package - sharing identical pin assignments for A1–A8, Y1–Y8, OE1, OE2, VCC, and GND. However, its 2.0–3.6 V supply range and 5 V-tolerant inputs differentiate its electrical behavior from those older families.
MC74LVX541DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVX
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 4mA, 4mA
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MC74LVX541DW FAQ
1.How can I place an order for MC74LVX541DW through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LVX541DW 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 MC74LVX541DW reliable?
The price and inventory of MC74LVX541DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LVX541DW is usually 5 days.
3.What payment methods are accepted for MC74LVX541DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LVX541DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LVX541DW?
MC74LVX541DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LVX541DW 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 MC74LVX541DW?
For technical support, including MC74LVX541DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LVX541DW requirements.
6.How does Aetrix verify that MC74LVX541DW is sourced from the original manufacturer or authorized distributors?
All MC74LVX541DW 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 MC74LVX541DW meets industry standards.
7.What is the process for return or replacement of MC74LVX541DW?
All MC74LVX541DW units undergo pre-shipment inspection (PSI). If there is an issue with MC74LVX541DW, 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 MC74LVX541DW part is unused and in its original packaging.
Return procedure for MC74LVX541DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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