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onsemi MC74VHC541DWR2
- Part No.:
- MC74VHC541DWR2
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC74VHC541DWR2.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,918
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Product details
Overview
MC74VHC541DWR2 from onsemi is an advanced high-speed CMOS octal noninverting 3-state bus buffer with TTL-compatible inputs, designed for bidirectional data buffering in 3.3 V/5.0 V mixed-voltage systems. It delivers 3.7 ns typical propagation delay at 5.0 V, supports 2.0–5.5 V supply operation, and features dual output-enable inputs (OE1/OE2) for flexible bus control in memory address/data paths and microcontroller I/O expansion.
For engineers reviewing the MC74VHC541DWR2 datasheet, pinout, applications, or equivalent options, key selection criteria include its 3-state output behavior, input voltage tolerance up to 5.5 V, SOIC-20W package compatibility, and verified performance across −55 °C to +125 °C industrial temperature range.
Technical Context
The MC74VHC541DWR2 implements a three-stage CMOS buffer architecture with dedicated output-enable logic that drives all eight outputs into high-impedance when either OE1 or OE2 is high. Its input structure tolerates voltages up to 5.5 V independent of VCC, enabling safe interfacing between 3.3 V controllers and 5.0 V peripherals without external level-shifting circuitry.
It provides balanced tPLH/tPHL propagation delays (≤6.0 ns max at 5.0 V, CL = 50 pF), low dynamic noise (VOLP ≤ 1.2 V), and robust power-down protection - including output structures functional at VCC = 0 V - making it suitable for hot-swap and battery-backup applications where supply sequencing is uncontrolled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - enables direct use in both 3.3 V and 5.0 V systems without regulator dependency |
| tPD (Typ) | 3.7 ns at VCC = 5.0 V - matches bipolar TTL speed while retaining CMOS power efficiency |
| Input Voltage Tolerance | −0.5 V to +5.5 V - allows safe connection to 5 V buses even when powered from 3.3 V |
| 3-State Leakage (IOZ) | ±0.25 µA max at VCC = 5.5 V - ensures minimal bus loading during disable state |
| Operating Temperature | −55 °C to +125 °C - qualified for extended industrial and automotive under-hood environments |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive standard CMOS loads and short PCB traces |
| ESD Rating | Human Body Model > 2000 V - meets JEDEC JESD22-A114-A for handling robustness |
Pinout & Package
MC74VHC541DWR2 is housed in a Pb-free SOIC-20 Wide Body (Case 751D) package measuring 12.8 mm × 7.5 mm × 2.35 mm (max height), with 1.27 mm pitch and gull-wing leads. The package is moisture sensitivity level (MSL) 3 and rated for reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1 / OE2 | Dual active-high output enable inputs - either high forces all Y outputs into high-impedance |
| 2–9, 11–18 | A1–A8 / Y1–Y8 | Noninverting data inputs and corresponding buffered outputs - pin-aligned for direct trace routing |
| 10 | GND | Ground reference for all internal logic and output stages |
| 20 | VCC | Primary power supply - powers internal logic and output drivers; accepts 2.0–5.5 V |
Key Features
| Feature | Design Value |
|---|---|
| High-Speed Operation | 3.7 ns typical propagation delay at 5.0 V - reduces timing margin pressure in high-frequency bus designs |
| Wide Supply Range | 2.0 V to 5.5 V operation - eliminates need for separate voltage translators in multi-rail systems |
| Input Overvoltage Tolerance | Inputs withstand −0.5 V to +5.5 V regardless of VCC - prevents latch-up during power sequencing mismatches |
| Power-Down Protection | Outputs remain protected and non-destructive when VCC = 0 V - critical for hot-insertion and backup-power scenarios |
| Noise Immunity | VNIH/VNIL = 28% of VCC - ensures reliable switching in electrically noisy industrial environments |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from noisy 5 V CAN transceiver and sensor bus lines in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing direction-controlled data isolation and voltage-level translation between 3.3 V MCU and legacy 5 V peripherals. Use Value: Eliminates external level shifters while maintaining <6 ns propagation delay and surviving −55 °C to +125 °C ambient operation. |
Use Scenario: Driving multiple LED indicators and relay drivers from a single 3.3 V automotive microcontroller in body control units. IC Role / Device Role / Timing Role: Octal buffer with dual OE control enabling grouped output activation and low-power standby via OE assertion. Use Value: Delivers ±8 mA per output at 5.0 V while consuming only 4.0 µA quiescent current - extends battery life during sleep modes. |
| Medical Diagnostic Equipment Data Bus | Test & Measurement Instrumentation |
|
Use Scenario: Buffering parallel ADC/DAC data lines between FPGA-based signal processing core and analog front-end modules operating at different supply rails. IC Role / Device Role / Timing Role: High-noise-immunity (28% VCC) bus driver ensuring clean data transfer across isolated power domains with minimal skew (<1.0 ns). Use Value: Supports simultaneous 8-bit transfers with matched tPLH/tPHL and guaranteed 1.2 V dynamic noise margin - improves measurement repeatability. |
Use Scenario: Enabling/disabling signal paths in modular benchtop instruments using FPGA-configurable bus gating. IC Role / Device Role / Timing Role: Dual-OE controlled octal buffer allowing precise timing of signal routing changes without bus contention. Use Value: Output disable time (tPHZ ≤ 10.0 ns) and enable time (tPZH ≤ 8.5 ns) support sub-10 ns switching windows for real-time path reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal noninverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Lower VCC range (1.65–3.6 V); 3.3 V only; no 5 V tolerant inputs | Restricted to pure 3.3 V systems; cannot interface 5 V buses | Select when system operates exclusively at 3.3 V and lowest static power is required |
| 74ACT541SCX | Higher drive strength (±24 mA); 5 V only; no 3.3 V compatibility | Requires 5 V supply only; unsuitable for mixed-voltage designs | Select when driving heavy capacitive loads (>50 pF) or long traces in 5 V-only legacy systems |
Compared with SN74LVC541APWR and 74ACT541SCX, MC74VHC541DWR2 uniquely supports 2.0–5.5 V operation with 5.5 V input tolerance - making it the only option among the three capable of bridging 3.3 V logic to 5 V peripherals without external components.
Availability
MC74VHC541DWR2 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC74VHC541DWR2 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC74VHC541DWR2 belongs to onsemi's VHC logic family, engineered for high-speed, low-power, mixed-voltage interoperability in space-constrained industrial and automotive control systems.
FAQ
What is the maximum operating temperature for MC74VHC541DWR2?
The MC74VHC541DWR2 is rated for continuous operation from −55 °C to +125 °C, as confirmed in the Recommended Operating Conditions table (page 4 of the datasheet). This full industrial temperature range is supported across all specified VCC levels (2.0–5.5 V) and applies to both SOIC-20W and TSSOP-20 variants of the MC74VHC541 family.
Does MC74VHC541DWR2 support 5 V tolerant inputs when powered from 3.3 V?
Yes, MC74VHC541DWR2 inputs tolerate voltages from −0.5 V to +5.5 V regardless of VCC level. When powered from 3.3 V, it safely accepts 5 V logic signals on A1–A8 without damage or clamping - a key feature enabling direct interfacing between 3.3 V microcontrollers and 5 V peripherals without external level shifters.
What is the function of OE1 and OE2 on MC74VHC541DWR2?
OE1 (pin 1) and OE2 (pin 19) are active-high output-enable inputs. When either is driven high, all eight Y outputs (Y1–Y8) enter high-impedance (3-state) mode. Both must be low for normal noninverting buffer operation. This dual-enable design allows flexible bus arbitration - for example, one OE can be used for system-level control and the other for local subsystem gating.
Is MC74VHC541DWR2 pin-compatible with MC74VHCT541ADWR2G?
Yes, MC74VHC541DWR2 and MC74VHCT541ADWR2G share identical SOIC-20 WB pinouts and functional pin assignments. However, they differ in input threshold compatibility: MC74VHC541DWR2 uses CMOS-compatible inputs (VIH = 0.7×VCC), while MC74VHCT541ADWR2G uses TTL-compatible inputs (VIH = 2.0 V fixed), making them electrically distinct despite mechanical and logical equivalence.
What package type does MC74VHC541DWR2 use?
MC74VHC541DWR2 uses the SOIC-20 Wide Body (Case 751D) package - a Pb-free, surface-mount outline measuring 12.8 mm × 7.5 mm with 1.27 mm lead pitch. It is MSL Level 3 compliant and specified for reflow soldering per JEDEC J-STD-020, with thermal resistance θJA = 96 °C/W on standard FR4 board layout.
MC74VHC541DWR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- 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:
- 2V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MC74VHC541DWR2 FAQ
1.How can I place an order for MC74VHC541DWR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC541DWR2 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 MC74VHC541DWR2 reliable?
The price and inventory of MC74VHC541DWR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC541DWR2 is usually 5 days.
3.What payment methods are accepted for MC74VHC541DWR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC541DWR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC541DWR2?
MC74VHC541DWR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC541DWR2 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 MC74VHC541DWR2?
For technical support, including MC74VHC541DWR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC541DWR2 requirements.
6.How does Aetrix verify that MC74VHC541DWR2 is sourced from the original manufacturer or authorized distributors?
All MC74VHC541DWR2 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 MC74VHC541DWR2 meets industry standards.
7.What is the process for return or replacement of MC74VHC541DWR2?
All MC74VHC541DWR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC541DWR2, 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 MC74VHC541DWR2 part is unused and in its original packaging.
Return procedure for MC74VHC541DWR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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