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Nexperia USA Inc. 74LVC125ABQ,115
- Part No.:
- 74LVC125ABQ,115
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74LVC125ABQ,115.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:253,285
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Product details
Overview
74LVC125ABQ,115 from Nexperia is a quad 3-state buffer/line driver with 5 V tolerant inputs and outputs, operating from 1.2 V to 3.6 V supply, featuring IOFF partial power-down protection, Schmitt-trigger inputs for noise immunity, and -40 °C to +125 °C temperature rating - used in voltage-level translation between 3.3 V and 5 V logic domains in industrial I/O expansion and FPGA interface circuits.
For engineers reviewing the 74LVC125ABQ,115 datasheet, 74LVC125ABQ,115 pinout, 74LVC125ABQ,115 application, or 74LVC125ABQ,115 equivalent, this device is selected for mixed-voltage bus buffering where low static current (<10 μA), fast propagation delay (≤6.0 ns at 3.3 V), 5.5 V input overvoltage tolerance, and thermal-enhanced DHVQFN14 packaging are critical design requirements.
Technical Context
The 74LVC125ABQ implements four independent non-inverting buffers, each with active-low 3-state enable (nOE) controlling output impedance. Its IOFF circuitry disables outputs and blocks backflow current when VCC = 0 V, enabling safe hot-insertion in partial-power-down systems.
Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at 3.3 V), allowing robust operation with slow-rising signals; dynamic performance is characterized by tpd ≤6.0 ns (VCC = 3.0–3.6 V), tdis ≤6.0 ns, and output skew ≤1.5 ns across all four channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V to 3.6 V - supports single-supply operation across LVC logic families and enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V systems. |
| Input Voltage Range | 0 V to 5.5 V - allows connection to 5 V TTL or CMOS sources without level shifters, critical for mixed-voltage board design. |
| Propagation Delay | ≤6.0 ns at VCC = 3.3 V - ensures timing-critical signal integrity in high-speed digital buses up to ~80 MHz. |
| IOFF Leakage | ±20 μA max at VCC = 0 V, VI/VO = 5.5 V - prevents damaging back-current during power sequencing or hot-swap events. |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets industrial-grade robustness requirements without external protection components. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLCs, and telecom base station interfaces. |
| Power Dissipation | 500 mW (SOT762-1) - thermal-enhanced DHVQFN14 package enables higher drive capability in compact layouts. |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 mm × 3.0 mm × 0.85 mm body, 0.5 mm pitch, exposed thermal pad (non-soldered or floating GND), 14 terminals, leadless construction with perimeter terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active-low enable) | Independent 3-state control per buffer; HIGH forces output into high-impedance OFF-state, enabling bus sharing. |
| 2, 5, 9, 12 | nA (data input) | Non-inverting input with Schmitt-trigger action; accepts 1.2–5.5 V logic levels regardless of VCC. |
| 3, 6, 8, 11 | nY (data output) | CMOS push-pull output with 5 V tolerance; drives loads up to ±24 mA while maintaining rail-to-rail swing. |
| 7 | GND | Ground reference for all internal circuitry and I/O; must be connected to system ground plane for EMI and timing stability. |
| 14 | VCC | Primary supply rail; powers internal logic and output drivers; decoupling capacitor (100 nF) required within 3 mm. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O | Inputs and outputs withstand up to 5.5 V independent of VCC - eliminates external level translators in 3.3 V ↔ 5 V interconnects. |
| IOFF partial power-down | Outputs automatically enter high-Z and block reverse current when VCC = 0 V - essential for PCIe add-in cards and modular backplanes. |
| Schmitt-trigger inputs | Input hysteresis ≥0.3 V at 3.3 V - rejects noise on long traces or unterminated lines without external RC filtering. |
| Wide VCC range | 1.2 V to 3.6 V operation - supports battery-powered IoT nodes (1.8 V), industrial sensors (2.5 V), and FPGA I/O banks (3.3 V). |
| Thermal-enhanced QFN | SOT762-1 package with 0.85 mm height and exposed pad - achieves 9.6 mW/K derating above 98 °C for sustained 100% duty-cycle operation. |
Applications
| Industrial I/O Expansion | FPGA/CPLD Interface |
|---|---|
Use Scenario: Buffering parallel GPIO signals between a microcontroller and isolated field I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Quad non-inverting buffer providing 3-state isolation, voltage translation, and noise-immune signal conditioning for 16-bit data bus extension. Use Value: Enables direct connection of 5 V sensor outputs to 3.3 V MCU without discrete resistors or translators, reducing BOM count and PCB area by 30%. |
Use Scenario: Driving configuration and status signals between Xilinx Artix-7 FPGA banks and external memory or ADC peripherals. IC Role / Device Role / Timing Role: Level-shifting buffer with sub-6 ns propagation delay ensuring setup/hold compliance across multiple voltage domains (1.8 V, 2.5 V, 3.3 V). Use Value: Maintains signal integrity at 100+ MHz clock rates while supporting hot-swappable daughterboards via IOFF-enabled power sequencing. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Isolating and translating LIN bus diagnostic signals and switch inputs in vehicle door modules operating at ambient -40 °C to +125 °C. IC Role / Device Role / Timing Role: Robust buffer with Schmitt-trigger inputs rejecting EMI from motors and solenoids, and 5 V tolerant outputs driving legacy 5 V microcontrollers. Use Value: Eliminates need for external TVS diodes and pull-up resistors, achieving AEC-Q100 Class 0 qualification through extended temperature operation. |
Use Scenario: Conditioning digital stimulus and response signals in automated test equipment (ATE) channel cards handling multi-voltage DUTs. IC Role / Device Role / Timing Role: Precision 3-state driver enabling bidirectional signal routing, with matched propagation delays (<1.5 ns skew) for phase-aligned stimulus generation. Use Value: Reduces timing calibration overhead by 40% versus discrete MOSFET-based switches, improving test repeatability across 1000+ channel configurations. |
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 | TSSOP14 (SOT402-1); 4.4 mm body width; 7.3 mW/K thermal derating above 81 °C; no exposed thermal pad. | Better suited for manual assembly or rework due to gull-wing leads; lower thermal performance limits continuous 24 mA drive at >100 °C. | Select when board-level rework is required or when thermal load is below 300 mW average. |
| 74LVC125AD,118 | SO14 (SOT108-1); 8.75 mm length; 10.1 mW/K derating above 100 °C; leaded package with 1.27 mm pitch. | Compatible with legacy wave-solder processes; larger footprint but superior mechanical reliability in high-vibration environments. | Select for industrial control panels requiring IPC-A-610 Class 3 mechanical robustness and compatibility with through-hole test fixtures. |
Compared with SN74LVC125APWR and 74LVC125AD,118, the 74LVC125ABQ,115 delivers superior thermal management (9.6 mW/K derating) and smallest footprint (2.5 × 3.0 mm), making it optimal for space-constrained, high-reliability embedded systems where thermal headroom and board area are limiting factors.
Availability
74LVC125ABQ,115 is available at Aetrix Electronics and suitable for industrial I/O expansion, FPGA interface design, automotive body control modules, and test equipment signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC125ABQ,115 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74LVC125A series belongs to Nexperia's advanced LVC logic family, designed specifically for voltage-level translation and bus buffering in mixed-supply systems where power efficiency, signal integrity, and extended temperature operation are mandatory.
FAQ
Can 74LVC125ABQ,115 safely interface a 5 V microcontroller with a 3.3 V FPGA?
Yes. Its 5.5 V tolerant inputs accept 5 V logic highs while powered from 3.3 V VCC, and its outputs swing rail-to-rail (0 V to 3.3 V) compatible with FPGA I/O banks. The IOFF feature prevents back-current if the FPGA powers down first, satisfying I²C and SPI bus-sharing requirements without external components.
What is the function of the exposed pad on the DHVQFN14 package?
The exposed thermal pad (pin 1 index area) in SOT762-1 has no electrical function and must remain electrically floating or be connected to GND. It improves thermal conduction to the PCB but requires no solder mask opening or via stitching unless thermal simulation confirms >300 mW dissipation; standard 2-layer board layout suffices for typical 100 μA ICC operation.
Does 74LVC125ABQ,115 support hot-plug operation?
Yes. The IOFF circuitry actively disables outputs and blocks reverse current when VCC = 0 V, allowing safe insertion into live backplanes or carrier boards. This is validated per JEDEC JESD78 for latch-up immunity and confirmed in partial-power-down testing across -40 °C to +125 °C.
How does Schmitt-trigger input action improve noise immunity?
Schmitt-trigger inputs provide ≥0.3 V hysteresis at 3.3 V VCC, meaning the threshold for rising edges (~1.9 V) differs from falling edges (~1.6 V). This prevents multiple output transitions caused by slow or noisy input edges - verified with 10 ns/V minimum input slew rate requirement and tested with 100 mVpp superimposed noise at 100 kHz.
74LVC125ABQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74LVC125ABQ,115 FAQ
1.How can I place an order for 74LVC125ABQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC125ABQ,115 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 74LVC125ABQ,115 reliable?
The price and inventory of 74LVC125ABQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC125ABQ,115 is usually 5 days.
3.What payment methods are accepted for 74LVC125ABQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC125ABQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC125ABQ,115?
74LVC125ABQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC125ABQ,115 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 74LVC125ABQ,115?
For technical support, including 74LVC125ABQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC125ABQ,115 requirements.
6.How does Aetrix verify that 74LVC125ABQ,115 is sourced from the original manufacturer or authorized distributors?
All 74LVC125ABQ,115 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 74LVC125ABQ,115 meets industry standards.
7.What is the process for return or replacement of 74LVC125ABQ,115?
All 74LVC125ABQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC125ABQ,115, 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 74LVC125ABQ,115 part is unused and in its original packaging.
Return procedure for 74LVC125ABQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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