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Nexperia USA Inc. 74ALVC125BQ-Q100X
- Part No.:
- 74ALVC125BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74ALVC125BQ-Q100X.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,779
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Product details
Overview
74ALVC125BQ-Q100 from Nexperia is a quad non-inverting 3-state buffer/line driver qualified to AEC-Q100 Grade 1 for automotive use, operating from −40 °C to +125 °C with supply voltage 1.65 V to 3.6 V, featuring IOFF partial power-down protection and Schmitt-trigger inputs tolerant of slow signal edges.
For engineers reviewing the 74ALVC125BQ-Q100 datasheet, 74ALVC125BQ-Q100 pinout, 74ALVC125BQ-Q100 application, or 74ALVC125BQ-Q100 equivalent, this device supports high-reliability bus interfacing in automotive control modules, ADAS sensor hubs, and infotainment backplanes where rail-to-rail logic compatibility, low dynamic power, and robust ESD immunity (HBM >2000 V) are required.
Technical Context
This device implements four independent non-inverting buffers, each with active-low 3-state output enable (nOE), enabling bidirectional bus control without external direction logic. Each channel features Schmitt-trigger inputs for noise immunity on slow-rising signals and IOFF circuitry that disables outputs and blocks backflow current when VCC = 0 V.
It complies with JEDEC standards JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), and JESD8C/JESD36 (2.7–3.6 V), ensuring interoperability across mixed-voltage systems. Propagation delay is as low as 1.1 ns at VCC = 3.0–3.6 V, with enable/disable times under 4.0 ns, supporting high-speed data routing in CAN/LIN gateway interfaces and display timing controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Operating Temperature | −40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Propagation Delay (tpd) | 1.1 ns (min) to 3.2 ns (max) at VCC = 3.0–3.6 V - Supports >200 MHz bus toggle rates in real-time control loops. |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - Prevents damaging backfeed current during hot-swap or partial power-down sequencing. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets automotive system-level ESD robustness requirements per ISO 10605. |
| Input Voltage Tolerance | Up to 3.6 V regardless of VCC - Allows safe interfacing with higher-voltage peripherals (e.g., legacy 5 V sensors via resistor divider). |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - Sustains 50 Ω transmission line drive with <0.55 V VOL and >2.2 V VOH under load. |
Pinout & Package
DHVQFN14 package (SOT762-1), 2.5 × 3.0 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, no leads, exposed thermal pad (non-electrical, optional GND connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active LOW) | Independent 3-state enable per buffer; HIGH forces high-impedance output, isolating bus segments. |
| 2, 5, 9, 12 | nA (input) | Non-inverting data input with Schmitt-trigger threshold; rejects noise on slow edges (Δt/ΔV ≤ 20 ns/V). |
| 3, 6, 8, 11 | nY (output) | Push-pull CMOS output; drives HIGH/LOW or enters high-Z state based on nOE and nA. |
| 7 | GND | Signal and power ground reference; decoupling capacitor must be placed adjacent to pin 7 and pin 14. |
| 14 | VCC | Primary supply rail; requires local 100 nF ceramic decoupling; IOFF remains active even if VCC = 0 V. |
| 1 (exposed pad) | Thermal pad | Non-functional mechanical pad; may be left floating or connected to GND for improved thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across −40 °C to +125 °C ambient, including temperature cycling and HTOL stress. |
| IOFF partial power-down | Blocks reverse current flow when VCC is unpowered, enabling live insertion and safe multi-rail system partitioning. |
| Schmitt-trigger inputs | Hysteresis ≥0.3 V at VCC = 3.3 V ensures reliable switching on noisy or slew-limited signals (e.g., LIN bus stubs). |
| DHVQFN14 with side-wettable flanks | Enables automated optical inspection of solder fillets on all 14 terminals, improving manufacturing yield in automotive SMT lines. |
| JEDEC-compliant voltage ranges | Guaranteed operation across three standardized I/O voltage bands (1.65–1.95 V, 2.3–2.7 V, 2.7–3.6 V), simplifying mixed-supply board design. |
Applications
| Automotive Body Control Module (BCM) | ADAS Camera Sensor Hub |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from high-capacitance wiring harnesses carrying door lock, window lift, and lighting commands. IC Role / Device Role / Timing Role: Quad buffer provides level-shifted, slew-controlled, and electrically isolated drive to 12 V relay drivers and LED arrays. Use Value: IOFF prevents backfeed into MCU during battery disconnect; Schmitt inputs reject ignition noise; 3-state enables shared bus arbitration. |
Use Scenario: Buffering parallel pixel clock and data lanes between image sensor and SoC in surround-view camera systems. IC Role / Device Role / Timing Role: Non-inverting line driver maintains signal integrity across 10–15 cm flex PCB traces with minimal skew and jitter. Use Value: Sub-3.2 ns tpd ensures setup/hold compliance at 100 MHz pixel rates; 24 mA drive sustains 50 Ω termination without waveform distortion. |
| Infotainment Display Interface | Electric Power Steering (EPS) Motor Control |
|
Use Scenario: Driving LVDS or RSDS serializer inputs from an MCU's parallel RGB interface in head-unit displays. IC Role / Device Role / Timing Role: Signal conditioner and fanout buffer for clock and data buses feeding display timing controller ICs. Use Value: Wide 1.65–3.6 V supply range matches SoC I/O voltage; low CPD (27 pF) minimizes dynamic power in always-on display subsystems. |
Use Scenario: Interfacing torque sensor analog front-end outputs and MCU ADC inputs in closed-loop EPS motor feedback paths. IC Role / Device Role / Timing Role: Level-translating buffer isolates sensitive analog domain from digital switching noise in motor gate driver circuits. Use Value: Overvoltage-tolerant inputs (to 3.6 V) withstand transient coupling from nearby 12 V motor phases; AEC-Q100 qualification ensures functional safety compliance. |
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 | Commercial-grade (−40 °C to +85 °C), no AEC-Q100 qualification; identical pinout and electrical specs except IOFF not characterized for automotive power-down. | Not suitable for under-hood or safety-critical modules; acceptable for cabin infotainment or HVAC control units outside thermal extremes. | Select only if AEC-Q100 is not mandated and cost sensitivity outweighs long-term reliability requirements. |
| 74LVC125ABQ-Q100 | Same package and qualification, but lacks Schmitt-trigger inputs - standard TTL-compatible thresholds only. | Unsuitable for noisy environments (e.g., engine bay, motor drives); requires external filtering or faster edge rates to avoid metastability. | Choose only when interfacing with clean, fast-rising digital sources (e.g., FPGA outputs) and thermal margin exceeds +105 °C. |
Compared with SN74LVC125APWR and 74LVC125ABQ-Q100, the 74ALVC125BQ-Q100 uniquely combines automotive qualification, Schmitt-trigger noise immunity, and guaranteed IOFF behavior - making it the sole option for robust bus isolation in thermally aggressive, safety-relevant vehicle subsystems.
Availability
74ALVC125BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS sensor interfaces, infotainment display backplanes, and electric power steering feedback paths requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 74ALVC125BQ-Q100 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, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.
The 74ALVC logic family targets high-speed, low-power, automotive-qualified buffering and level translation in space-constrained ECUs, designed specifically to meet stringent AEC-Q100 Grade 1 requirements and reduce system-level validation effort.
FAQ
Can 74ALVC125BQ-Q100 operate with VCC = 1.65 V while interfacing with 3.3 V inputs?
Yes. Its inputs are overvoltage tolerant up to 3.6 V regardless of VCC level, allowing safe connection to 3.3 V sources even when powered at minimum 1.65 V. VIH is guaranteed at 0.65×VCC (≥1.07 V), ensuring reliable HIGH detection from 3.3 V logic.
What is the function of the exposed thermal pad (pin 1) in the DHVQFN14 package?
The exposed pad is a non-electrical mechanical feature with no internal connection. It may be left floating or connected to GND via solder for enhanced thermal conduction, but must never be tied to VCC or any active signal. No electrical requirement exists for soldering it.
Does IOFF functionality require external biasing or configuration?
No. IOFF is fully automatic and requires no external components or configuration. When VCC = 0 V, the output transistors are internally disabled, limiting OFF-state leakage to ±10 μA maximum - effective even during battery disconnection or brown-out events.
How does Schmitt-trigger input action improve noise immunity in automotive environments?
Schmitt-trigger inputs provide hysteresis (~0.3 V at 3.3 V), meaning the threshold for detecting a rising edge (VIH) is significantly higher than for a falling edge (VIL). This prevents multiple toggles caused by slow-rising or noisy signals - critical for reliable operation near ignition systems or motor drives.
74ALVC125BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVC
- 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:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74ALVC125BQ-Q100X FAQ
1.How can I place an order for 74ALVC125BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVC125BQ-Q100X 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 74ALVC125BQ-Q100X reliable?
The price and inventory of 74ALVC125BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC125BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74ALVC125BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC125BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVC125BQ-Q100X?
74ALVC125BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVC125BQ-Q100X 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 74ALVC125BQ-Q100X?
For technical support, including 74ALVC125BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC125BQ-Q100X requirements.
6.How does Aetrix verify that 74ALVC125BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74ALVC125BQ-Q100X 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 74ALVC125BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74ALVC125BQ-Q100X?
All 74ALVC125BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC125BQ-Q100X, 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 74ALVC125BQ-Q100X part is unused and in its original packaging.
Return procedure for 74ALVC125BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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