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onsemi 74VHC541MX
- Part No.:
- 74VHC541MX
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74VHC541MX.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,167
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Product details
Overview
74VHC541MX from ON Semiconductor is an octal non-inverting buffer/line driver with 3-STATE outputs, designed for memory address driving, bus interfacing, and microprocessor I/O port expansion. It operates from 2.0 V to 5.5 V, delivers 3.5 ns typical propagation delay at 5 V, supports ±25 mA output drive, and features flow-through pinout (inputs on one side, outputs on the other) for optimized PCB layout.
For engineers reviewing the 74VHC541MX datasheet, pinout, applications, or equivalent options, key selection criteria include 3-STATE enable timing (tPZL/tPLZ ≤ 10.0 ns), input voltage tolerance up to 7 V, high noise immunity (VNIH/VNIL ≥ 28% VCC), and compatibility with both 3.3 V and 5 V logic systems.
Technical Context
The 74VHC541MX implements dual independent 3-STATE enable controls (OE1, OE2), allowing grouped output control of two 4-bit sections. Its silicon-gate CMOS process enables TTL-compatible speed with CMOS-level static power consumption (ICC ≤ 4 µA at 25 °C).
Input protection circuitry permits safe operation across mixed-supply environments - inputs tolerate 0 V to 7 V regardless of VCC, enabling robust 5 V-to-3 V translation and battery-backup system interfacing without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - supports single-supply operation in 3.3 V and 5 V systems |
| tPD (typ) | 3.5 ns at VCC = 5 V - enables high-speed address/data buffering in microprocessor buses |
| IOUT (max) | ±25 mA - drives standard TTL loads and short PCB traces without external buffers |
| VIH/VIL | 0.7 VCC / 0.3 VCC - ensures reliable logic recognition across supply variations |
| tPZL/tPLZ | ≤ 10.0 ns at CL = 50 pF - guarantees fast, predictable bus release during 3-STATE transitions |
| VIN Range | 0 V to 7 V - allows direct interface to overvoltage-tolerant or mixed-voltage peripherals |
| ICC (max) | 40 µA at TA = 85 °C - maintains ultra-low quiescent power in battery-critical applications |
Pinout & Package
74VHC541MX is supplied in a 20-lead SOIC package (JEDEC MS-013, 0.300" wide, Package Number M20B), surface-mount compatible and available on tape-and-reel (suffix "X").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low 3-STATE enable inputs - independently disable O0–O3 (OE1) or O4–O7 (OE2) |
| 2–9 | I0–I7 | Buffer inputs - arranged left-to-right on pin 2–9 for flow-through routing with outputs on opposite side |
| 11–18 | O0–O7 | 3-STATE non-inverting outputs - positioned right-to-left (pin 11 = O0, pin 18 = O7) to match flow-through layout |
| 10 | GND | Ground reference - must be connected to system common return path |
| 20 | VCC | Positive supply - decoupling capacitor (0.1 µF) required within 10 mm of pin 20 |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Inputs (pins 2–9) and outputs (pins 11–18) on opposite sides - reduces trace crossovers and improves signal integrity in dense layouts |
| Wide input voltage tolerance | 0 V to 7 V input range - eliminates need for external clamping diodes when interfacing to higher-voltage peripherals |
| Low dynamic noise | VOLP = 0.9 V (typ) at CL = 50 pF - minimizes ground bounce and crosstalk in multi-driver bus environments |
| Pin-compatible with 74HC541 | Identical pin assignment and logic function - enables drop-in replacement in existing HC-based designs with improved speed and noise margin |
| Power-down input protection | All inputs protected against floating states - prevents undefined output behavior when VCC is unpowered or ramping |
Applications
| Memory Address Buffering | Microprocessor I/O Port Expansion |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory with minimal skew and clean bus release. IC Role / Device Role / Timing Role: Non-inverting octal buffer with synchronized 3-STATE control - isolates memory bus during DMA cycles or peripheral access. Use Value: tOSLH/tOSHL ≤ 1.5 ns ensures tight output-to-output skew, preventing address setup violations across parallel lines. | Use Scenario: Expanding GPIO capability of an MCU by adding 8 programmable high-drive outputs with tri-state control. IC Role / Device Role / Timing Role: Bidirectional bus driver configured as output port - OE1/OE2 allow software-controlled bank enable for multiplexed peripherals. Use Value: ±25 mA drive strength supports direct LED driving or relay coil control without external transistors. |
| Level Translation Interface | Bus-Oriented Transmitter/Receiver |
Use Scenario: Interfacing a 3.3 V FPGA I/O bank to legacy 5 V peripherals while maintaining logic compatibility. IC Role / Device Role / Timing Role: Voltage-tolerant input buffer - accepts 0–7 V inputs while operating from 3.3 V VCC to generate clean 3.3 V outputs. Use Value: Input protection circuitry eliminates risk of latch-up or damage during hot-plug or supply sequencing mismatches. | Use Scenario: Implementing a shared data bus between multiple controllers where only one driver is active at a time. IC Role / Device Role / Timing Role: Half-duplex bus driver with fast disable timing - tPLZ ≤ 10.0 ns ensures rapid bus release before next transmitter asserts. Use Value: Low ICC (≤ 4 µA) and no DC path between inputs/outputs in 3-STATE mode reduce bus leakage and standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC541D,653 | Slower tPD (15 ns typ at 4.5 V); identical pinout and logic function; lower drive (±7.8 mA) | Suitable for low-speed industrial control where power efficiency outweighs speed | Select when cost sensitivity dominates and 3.5 ns timing is unnecessary |
| SN74LVC541APWR | Wider VCC range (1.65–3.6 V); 3.3 V only; higher speed (tPD = 2.9 ns typ); different pinout (no flow-through) | Optimized for modern low-voltage SoC interfaces; not pin-compatible | Choose for new 3.3 V-only designs requiring lowest possible propagation delay |
Compared with 74HC541D,653 and SN74LVC541APWR, the 74VHC541MX uniquely balances 5 V compatibility, 3.5 ns speed, flow-through layout, and 7 V input tolerance - making it optimal for mixed-voltage upgrades of legacy HC-based systems.
Availability
74VHC541MX is available at Aetrix Electronics and suitable for memory subsystems, microprocessor I/O expansion, level translation interfaces, and bus-oriented transmitter/receiver circuits requiring stable component supply and long-term manufacturability.
Supply support for 74VHC541MX 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud computing, and consumer applications.
The 74VHC541MX belongs to ON Semiconductor's legacy high-speed CMOS logic family, engineered for pin-compatible upgrades of TTL and HC devices in systems demanding improved speed, noise immunity, and mixed-voltage interoperability.
FAQ
What is the maximum input voltage rating for the 74VHC541MX?
The 74VHC541MX supports DC input voltages from 0 V to 7.0 V, independent of VCC. This allows safe interfacing with higher-voltage peripherals or mismatched supply domains without external protection components - a key feature confirmed in the Absolute Maximum Ratings table and reinforced by the input protection circuit description in the General Description section.
Does the 74VHC541MX support 3.3 V operation?
Yes, the 74VHC541MX is fully specified for 3.3 V operation (VCC = 3.3 V ± 0.3 V). AC Electrical Characteristics list tPLH/tPHL = 7.0 ns (typ) and tPZL/tPLZ = 6.2 ns (typ) at 3.3 V, and DC parameters including VIH = 0.7 × VCC and VOL ≤ 0.44 V at IOL = 8 mA are guaranteed across the full 2.0 V to 5.5 V range.
Is the 74VHC541MX pin-compatible with the 74HC541?
Yes, the 74VHC541MX is explicitly stated as pin and function compatible with the 74HC541 in the Features section of the datasheet. Both share identical 20-pin SOIC packaging (M20B), matching pin assignments for I0–I7, O0–O7, OE1, OE2, VCC, and GND - enabling direct replacement without PCB modification.
What is the purpose of the dual OE inputs (OE1 and OE2) on the 74VHC541MX?
The 74VHC541MX uses OE1 to control outputs O0–O3 and OE2 to control O4–O7, enabling independent 3-STATE management of two 4-bit groups. This architecture supports flexible bus partitioning - for example, using OE1 for memory address bits A0–A3 and OE2 for A4–A7 - reducing contention and simplifying control logic in multi-peripheral systems.
What package type does the 'X' suffix indicate in 74VHC541MX?
The 'X' suffix in 74VHC541MX denotes tape-and-reel packaging for automated SMT assembly. The base device 74VHC541M is the same SOIC-20 (M20B) package, but 74VHC541MX is supplied on standard 13" reels per JEDEC J-STD-020B, with Pb-free terminations and moisture sensitivity level (MSL) 1 rating - confirmed in the Ordering Code section and Connection Diagram notes.
74VHC541MX 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
74VHC541MX FAQ
1.How can I place an order for 74VHC541MX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC541MX 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 74VHC541MX reliable?
The price and inventory of 74VHC541MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC541MX is usually 5 days.
3.What payment methods are accepted for 74VHC541MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC541MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC541MX?
74VHC541MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC541MX 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 74VHC541MX?
For technical support, including 74VHC541MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC541MX requirements.
6.How does Aetrix verify that 74VHC541MX is sourced from the original manufacturer or authorized distributors?
All 74VHC541MX 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 74VHC541MX meets industry standards.
7.What is the process for return or replacement of 74VHC541MX?
All 74VHC541MX units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC541MX, 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 74VHC541MX part is unused and in its original packaging.
Return procedure for 74VHC541MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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