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onsemi MC74LVX541MELG
- Part No.:
- MC74LVX541MELG
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74LVX541MELG.pdf
- Description:
- IC BUF NON-INVERT 3.6V SOEIAJ-20
- Quantity:
- Payment:
- Shipping:
Inventory:3,156
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Product details
Overview
MC74LVX541MELG 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 MC74LVX541MELG datasheet, pinout, applications, or equivalent options, key selection criteria include its dual-output-enable architecture (OE1/OE2), high noise immunity (28% VCC), 3.6 V max ICC of 4.0 µA, TSSOP-20 package footprint, and compatibility with 3.3 V LVTTL/LVCMOS logic families.
Technical Context
The MC74LVX541MELG implements a three-stage internal buffer architecture that ensures stable output transitions and high noise immunity. Its inputs tolerate up to 6.5 V DC, allowing safe connection to 5.0 V buses while powered from a 3.3 V supply - critical for legacy system upgrades and mixed-voltage I/O bridging.
Output enable logic is OR-gated: either OE1 or OE2 asserted high places all eight Y outputs into high-impedance state. Propagation delays are balanced across channels (tOSLH/tOSHL ≤ 1.0 ns at 3.3 V), minimizing skew in parallel data paths used in address/data bus isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 3.6 V - enables operation in modern low-voltage embedded systems without level shifters. |
| Propagation Delay (tPD) | 5.0 ns typical at VCC = 3.3 V, CL = 15 pF - supports >100 MHz bus timing in synchronous interfaces. |
| Output Drive Current | ±25 mA per pin - sufficient to drive standard 50 Ω transmission lines or multiple LVTTL loads. |
| Input Voltage Tolerance | −0.5 V to +6.5 V - allows direct interface to 5 V logic without external clamping diodes. |
| Quiescent Supply Current | 4.0 µA max at VCC = 3.6 V - ensures ultra-low static power in battery-backed or always-on subsystems. |
| Noise Immunity | VNIH/VNIL = 28% VCC - provides robust operation in electrically noisy industrial environments. |
| ESD Rating | HBM > 2000 V - meets IEC 61000-4-2 Level 2 requirements for board-level ESD resilience. |
Pinout & Package
TSSOP-20 (Case 948E) package: 6.5 mm × 4.4 mm body, 0.65 mm pitch, exposed pad not present, RoHS-compliant Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-high output enable inputs; OR logic - asserting either forces all Y outputs to high-Z. |
| 2–9, 11–18 | A1–A8, Y1–Y8 | Eight independent noninverting data paths; A→Y mapping is pin-aligned (A1→Y1, ..., A8→Y8). |
| 10 | GND | Ground reference for all I/O and internal circuitry; must be low-inductance connection. |
| 20 | VCC | Primary power supply (2.0–3.6 V); decoupling capacitor required within 1 cm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed 3-state buffering | 5.0 ns tPD at 3.3 V enables use in 100+ MHz parallel bus isolation without timing closure issues. |
| Input overvoltage tolerance | 6.5 V-rated inputs eliminate need for external voltage translators when interfacing with 5 V peripherals. |
| Dual independent output enables | OE1/OE2 OR logic allows flexible bus partitioning - e.g., enable Y1–Y4 via OE1, Y5–Y8 via OE2. |
| Low dynamic noise | VOLP ≤ 0.8 V ensures <100 mV ground bounce during simultaneous switching of all eight outputs. |
| Latchup immunity | Exceeds 300 mA per JEDEC JESD78 - prevents destructive latchup under transient overvoltage conditions. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (BCM) I/O Expansion |
|---|---|
Use Scenario: Isolating microcontroller GPIO banks from noisy 24 V field I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing bidirectional voltage translation and bus contention prevention. Use Value: Enables safe 3.3 V MCU communication with 5 V-compatible peripheral cards using single-supply operation and no external level shifters. |
Use Scenario: Expanding CAN/LIN node digital I/O count in automotive BCMs where space and BOM cost are constrained. IC Role / Device Role / Timing Role: Octal buffer isolating MCU port pins from relay drivers, LED indicators, and sensor inputs. Use Value: Reduces PCB layer count by consolidating eight discrete buffers into one TSSOP-20 device with guaranteed 28% noise margin. |
| Medical Diagnostic Equipment Data Bus | Test & Measurement Instrumentation Signal Routing |
Use Scenario: Buffering parallel ADC/DAC data lines between FPGA and analog front-end in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-skew (≤1.0 ns) noninverting driver ensuring synchronized sampling across 8-bit data paths. Use Value: Eliminates inter-channel timing mismatch that would degrade ENOB in high-resolution medical signal chains. |
Use Scenario: Configurable signal routing between DUT interface connectors and measurement ASICs in automated test equipment. IC Role / Device Role / Timing Role: Reconfigurable bus isolator controlled by FPGA GPIOs to route stimulus/response signals dynamically. Use Value: Supports multi-DUT parallel testing by enabling/disabling signal paths without hardware rework or relay wear-out. |
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 | Wider VCC range (1.65–3.6 V); lower tPD (3.9 ns typ); higher ICC (10 µA max); same TSSOP-20 pinout. | Preferred for ultra-low-voltage 1.8 V systems; less suitable for 3.3 V-only designs requiring minimal quiescent current. | Select SN74LVC541APWR only if operating below 2.0 V or requiring sub-4 ns timing; otherwise MC74LVX541MELG offers superior static power efficiency. |
| 74ALVC541PW | Higher drive (±24 mA), faster tPD (3.2 ns typ), but narrower noise margin (20% VCC) and no 6.5 V input tolerance. | Suitable for high-speed digital test fixtures; unsuitable for mixed-voltage industrial backplanes due to lack of 5 V-tolerant inputs. | Choose 74ALVC541PW only for speed-critical, single-supply 3.3 V systems where noise immunity and voltage translation are secondary. |
Compared with SN74LVC541APWR and 74ALVC541PW, the MC74LVX541MELG uniquely balances ultra-low ICC (4 µA), 6.5 V input tolerance, and 28% noise margin - making it optimal for power-sensitive, mixed-voltage industrial and medical applications where reliability outweighs marginal speed gains.
Availability
MC74LVX541MELG is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MC74LVX541MELG 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 MC74LVX541MELG belongs to onsemi's LVX logic family - engineered for low-voltage, high-noise-immunity bus interfacing in mission-critical industrial and medical systems where reliability and voltage translation are essential.
FAQ
What is the maximum input voltage rating for MC74LVX541MELG?
The MC74LVX541MELG supports DC input voltages from −0.5 V to +6.5 V, regardless of VCC level. This 6.5 V absolute maximum rating enables direct connection to 5.0 V logic buses while operating from a 3.3 V supply - eliminating external level-shifting components in mixed-voltage designs. The specification is validated per onsemi's Maximum Ratings table and applies to all input pins including A1–A8, OE1, and OE2.
Does MC74LVX541MELG support true 3-state operation with both OE1 and OE2?
Yes, the MC74LVX541MELG implements OR-gated 3-state control: asserting either OE1 or OE2 high places all eight Y outputs into high-impedance mode. Both enables are independent and active-high; they do not require coordinated timing. This architecture allows flexible bus partitioning - for example, OE1 can control Y1–Y4 while OE2 controls Y5–Y8 - as confirmed in the Function Table and Logic Diagram of the official datasheet.
What is the typical propagation delay of MC74LVX541MELG at 3.3 V supply?
The MC74LVX541MELG delivers a typical propagation delay (tPLH/tPHL) of 5.0 ns at VCC = 3.3 V ± 0.3 V with CL = 15 pF, as specified in the AC Electrical Characteristics table. This value is measured under standard load conditions and represents the average delay across all eight A→Y channels. The maximum delay is 7.0 ns under the same conditions, ensuring timing predictability in high-speed parallel interfaces.
Is MC74LVX541MELG compatible with 1.8 V logic systems?
No, the MC74LVX541MELG is not rated for 1.8 V operation. Its recommended operating VCC range is 2.0 V to 3.6 V per the datasheet's Recommended Operating Conditions table. At 1.8 V, the device may fail to meet VIH/VIL thresholds, exhibit excessive propagation delay, or violate noise margin specifications. For 1.8 V systems, consider the SN74LVC541A series instead.
What package type is used for MC74LVX541MELG?
The MC74LVX541MELG uses the TSSOP-20 package (Case 948E), a 20-pin thin shrink small outline package with 0.65 mm lead pitch, 6.5 mm × 4.4 mm body size, and Pb-free RoHS-compliant finish. This package is distinct from the SOIC-20 variant (MC74LVX541DWG) and requires specific land pattern dimensions per onsemi's mechanical drawing 98ASB42343B.
MC74LVX541MELG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVX
- Package/Case:
- 20-SOIC (0.209", 5.30mm 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:
- 4mA, 4mA
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOEIAJ-20
MC74LVX541MELG FAQ
1.How can I place an order for MC74LVX541MELG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LVX541MELG 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 MC74LVX541MELG reliable?
The price and inventory of MC74LVX541MELG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LVX541MELG is usually 5 days.
3.What payment methods are accepted for MC74LVX541MELG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LVX541MELG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LVX541MELG?
MC74LVX541MELG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LVX541MELG 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 MC74LVX541MELG?
For technical support, including MC74LVX541MELG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LVX541MELG requirements.
6.How does Aetrix verify that MC74LVX541MELG is sourced from the original manufacturer or authorized distributors?
All MC74LVX541MELG 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 MC74LVX541MELG meets industry standards.
7.What is the process for return or replacement of MC74LVX541MELG?
All MC74LVX541MELG units undergo pre-shipment inspection (PSI). If there is an issue with MC74LVX541MELG, 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 MC74LVX541MELG part is unused and in its original packaging.
Return procedure for MC74LVX541MELG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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