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onsemi MC74LVX125MG
- Part No.:
- MC74LVX125MG
- Manufacturer:
- onsemi
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74LVX125MG.pdf
- Description:
- IC BUF NON-INVERT 3.6V SOEIAJ-14
- Quantity:
- Payment:
- Shipping:
Inventory:3,190
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Product details
Overview
MC74LVX125MG from onsemi is a quad 3-state bus buffer with 5 V-tolerant inputs, designed for level-shifting between 3.3 V and 5.0 V logic domains in digital interface circuits. It features 4.4 ns typical propagation delay at 3.3 V, ±25 mA output drive, and operates across −40 °C to +85 °C. It is used in bidirectional data bus isolation in microcontroller peripheral expansion and FPGA I/O bridging.
For engineers reviewing the MC74LVX125MG datasheet, pinout, applications, or equivalent options, key selection criteria include 5 V-tolerant input compatibility, 3-state enable timing (tPZL/tPHZ ≤ 11.0 ns), low ICC (≤ 4 µA), noise immunity (VOLP ≤ 0.5 V), and SOIC-14/TSSOP-14 package options.
Technical Context
The MC74LVX125MG implements four independent non-inverting buffers, each with a dedicated active-low 3-state enable (OE) input controlling output high-impedance state. Inputs tolerate up to 6.5 V DC, enabling safe interfacing of 5 V signals into 3.3 V systems without external level shifters.
Its CMOS design ensures balanced tPLH/tPHL propagation delays (≤ 9.7 ns max at 3.3 V/50 pF), low dynamic noise (VOLP ≤ 0.5 V), and latchup immunity exceeding 300 mA. The device supports rail-to-rail input voltage operation (0–5.5 V) while powered from 2.0–3.6 V VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 3.6 V - Enables direct integration into 3.3 V systems without voltage translation |
| Input Voltage Tolerance | −0.5 V to +6.5 V - Allows safe connection of 5 V logic signals without damage or clamping diodes |
| tPD (Typ) | 4.4 ns at VCC = 3.3 V, CL = 15 pF - Supports >100 MHz bus toggle rates in short-trace applications |
| IOUT (Drive) | ±25 mA per output - Sufficient to drive standard TTL loads or multiple CMOS inputs |
| ICC (Max) | 4.0 µA at TA = 25°C - Enables ultra-low static power in battery-backed or always-on control logic |
| VOL (Max) | 0.44 V at IOL = 4 mA, VCC = 3.0 V - Ensures robust LOW-level noise margin in noisy industrial environments |
| Operating Temp | −40 °C to +85 °C - Qualified for extended industrial temperature operation without derating |
Pinout & Package
MC74LVX125MG is available in Pb-free SOIC-14 NB (Case 751A) and TSSOP-14 (Case 948G) packages. Both are 14-pin surface-mount packages with standard 1.27 mm pitch (SOIC) or 0.65 mm pitch (TSSOP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | OE0–OE3 | Active-High 3-state enable inputs - Each controls one buffer's output state independently |
| 2, 5, 9, 12 | D0–D3 | Data inputs - Accept 5 V-tolerant logic levels regardless of VCC |
| 3, 6, 8, 11 | O0–O3 | Non-inverting buffered outputs - Drive downstream logic with controlled slew and low noise |
| 7 | GND | Ground reference - Must be connected to system ground plane for noise integrity |
| 14 | VCC | Positive supply - Powers internal logic; must be decoupled locally with 0.1 µF ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant inputs | Supports mixed-voltage system interconnect without external components or voltage dividers |
| Low dynamic noise (VOLP ≤ 0.5 V) | Minimizes switching-induced crosstalk in dense PCB layouts with shared power/ground planes |
| Output disable time ≤ 11.0 ns | Enables fast bus arbitration and prevents data contention during multi-driver access |
| Latchup immunity > 300 mA | Guarantees robustness against transient overvoltage events in industrial control environments |
| Pb-free & RoHS compliant | Meets global environmental compliance requirements for new product designs and manufacturing |
Applications
| Microcontroller Bus Expansion | FPGA I/O Bridging |
|---|---|
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU by connecting parallel peripherals (ADCs, DACs, GPIO expanders) via shared 8-bit data bus. IC Role / Device Role / Timing Role: Quad buffer isolates MCU data lines from peripheral loading; OE pins synchronized to address decode to enable only one peripheral at a time. Use Value: Eliminates need for discrete level shifters while maintaining <10 ns timing margins for 25 MHz bus operation. |
Use Scenario: Interfacing a Xilinx Artix-7 FPGA operating at 3.3 V with legacy 5 V industrial sensors and actuators on the same backplane. IC Role / Device Role / Timing Role: Acts as unidirectional voltage translator on sensor data lines; inputs accept 5 V logic, outputs drive FPGA inputs at 3.3 V levels. Use Value: Prevents input overvoltage damage to FPGA I/O banks and avoids timing skew from passive resistor-based translation. |
| Industrial PLC I/O Modules | Test Equipment Signal Routing |
Use Scenario: Isolating field-side digital inputs in a modular PLC rack where 24 V sensor signals are conditioned to 5 V TTL, then interfaced to a 3.3 V controller ASIC. IC Role / Device Role / Timing Role: Provides galvanically isolated signal conditioning stage; OE controlled by watchdog timer to force safe high-Z state on fault. Use Value: Enables fail-safe shutdown without hardware redesign; meets IEC 61000-4-2 ESD immunity (>2 kV HBM) requirement. |
Use Scenario: Building automated test equipment (ATE) with programmable signal routing matrix for DUT stimulus/response paths. IC Role / Device Role / Timing Role: Configurable bus gate in path selection logic; multiple MC74LVX125MG units enable simultaneous routing of 4 independent digital channels. Use Value: Achieves sub-15 ns channel switching latency with deterministic timing, critical for high-speed parametric testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC125APWR | 3.3 V-only inputs (not 5 V-tolerant); slightly faster tPD (3.7 ns typ); higher ICC (10 µA max) | Requires external level shifting for 5 V inputs; better suited for pure 3.3 V systems with tighter timing budgets | Select when system uses only 3.3 V logic and needs minimal propagation delay |
| 74LCX125MTCX | 5 V-tolerant inputs confirmed; similar tPD (4.5 ns); lower VOL (0.35 V max); different pinout (OE active-low) | Compatible voltage range but requires board layout change due to inverted OE polarity and alternate pin assignment | Select when upgrading legacy LCX designs and OE inversion can be accommodated in firmware |
Compared with SN74LVC125APWR and 74LCX125MTCX, the MC74LVX125MG uniquely combines guaranteed 5 V input tolerance, active-high OE, and ultra-low ICC (4 µA), making it optimal for power-constrained industrial interfaces where mixed-voltage robustness is mandatory.
Availability
MC74LVX125MG is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA-based test equipment, and microcontroller bus expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MC74LVX125MG 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC74LVX125MG belongs to the LVX low-voltage logic family, engineered for interoperability between 3.3 V and 5 V systems while minimizing power consumption and electromagnetic interference in space-constrained industrial electronics.
FAQ
What is the maximum input voltage the MC74LVX125MG can safely accept?
The MC74LVX125MG supports DC input voltages from −0.5 V to +6.5 V, independent of VCC. This 5 V-tolerant capability allows direct connection of 5.0 V logic signals even when powered from 3.3 V, eliminating external level-shifting components. The specification is validated per Absolute Maximum Ratings and confirmed in both Recommended Operating Conditions and DC Electrical Characteristics tables of the official datasheet.
Does the MC74LVX125MG support active-low output enable?
No, the MC74LVX125MG uses active-high output enable inputs (OE0–OE3). When OE is HIGH, the corresponding output (O0–O3) drives its input value; when OE is LOW, the output enters high-impedance state. This differs from many competing quad buffers (e.g., 74LCX125) that use active-low OE. The logic diagram and function table on page 1 of the datasheet explicitly confirm active-high behavior.
What is the typical propagation delay of the MC74LVX125MG at 3.3 V supply?
The MC74LVX125MG delivers 4.4 ns typical propagation delay (tPLH/tPHL) at VCC = 3.3 V with CL = 15 pF, as specified in the AC Electrical Characteristics table (page 3). This value is measured under standard conditions and enables reliable operation in digital systems with clock periods ≥ 10 ns, such as 100 MHz synchronous buses with appropriate setup/hold margins.
Can the MC74LVX125MG be used in automotive applications?
The MC74LVX125MG is qualified for industrial temperature range (−40 °C to +85 °C) and meets JESD22-A114 (ESD HBM > 2000 V) and JESD78 (latchup > 300 mA) standards. However, it is not AEC-Q100 qualified and lacks automotive-specific reliability testing (e.g., HTOL, temperature cycling). For automotive use, onsemi recommends AEC-Q100 qualified alternatives like the NLV74LVX125, not the MC74LVX125MG.
What package options are available for the MC74LVX125MG?
The MC74LVX125MG is offered in two Pb-free, RoHS-compliant packages: SOIC-14 NB (Case 751A, 14-pin, 1.27 mm pitch) and TSSOP-14 (Case 948G, 14-pin, 0.65 mm pitch). Both are surface-mount packages with identical pinout and electrical specifications; the choice depends on board density requirements and assembly capabilities. Marking codes and shipping formats (rail/tape & reel) are detailed in the Ordering Information section (page 4).
MC74LVX125MG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVX
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 1
- 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-14
MC74LVX125MG FAQ
1.How can I place an order for MC74LVX125MG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LVX125MG 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 MC74LVX125MG reliable?
The price and inventory of MC74LVX125MG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LVX125MG is usually 5 days.
3.What payment methods are accepted for MC74LVX125MG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LVX125MG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LVX125MG?
MC74LVX125MG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LVX125MG 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 MC74LVX125MG?
For technical support, including MC74LVX125MG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LVX125MG requirements.
6.How does Aetrix verify that MC74LVX125MG is sourced from the original manufacturer or authorized distributors?
All MC74LVX125MG 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 MC74LVX125MG meets industry standards.
7.What is the process for return or replacement of MC74LVX125MG?
All MC74LVX125MG units undergo pre-shipment inspection (PSI). If there is an issue with MC74LVX125MG, 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 MC74LVX125MG part is unused and in its original packaging.
Return procedure for MC74LVX125MG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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