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Nexperia USA Inc. 74VHC126BQ-Q100X
- Part No.:
- 74VHC126BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74VHC126BQ-Q100X.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,909
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Product details
Overview
74VHC126BQ-Q100 from Nexperia is a quad non-inverting 3-state buffer/line driver in DHVQFN14 package, designed for automotive signal routing with CMOS input compatibility, -40 °C to +125 °C operation, and AEC-Q100 Grade 1 qualification. It delivers 3.3 ns typical propagation delay at 5 V/15 pF, ±8 mA output drive, and Schmitt-trigger inputs enabling noise-immune bus interfacing in engine control units and ADAS domain controllers.
For engineers reviewing the 74VHC126BQ-Q100 datasheet, 74VHC126BQ-Q100 pinout, 74VHC126BQ-Q100 application, or 74VHC126BQ-Q100 equivalent, key selection criteria include 3-state enable timing (ten = 3.3 ns typ), input voltage tolerance beyond VCC, thermal-enhanced DHVQFN packaging for under-hood reliability, and TTL-compatible variants (74VHCT126BQ-Q100) for mixed-logic systems.
Technical Context
This device implements four independent non-inverting buffers, each with active-HIGH 3-state enable (nOE) controlling high-impedance output (nY). All inputs feature Schmitt-trigger action and tolerate voltages up to 7.0 V regardless of VCC, supporting hot-swap and level-shifting use cases.
It operates across 2.0–5.5 V supply range for 74VHC variant, with static VIH/VIL thresholds defined per VCC (e.g., VIH = 3.85 V min at VCC = 5.5 V), and dynamic performance characterized at CL = 15 pF and 50 pF loads under automotive temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - Enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Propagation Delay (tpd) | 3.3 ns typ @ VCC = 5.0 V, CL = 15 pF - Supports >100 MHz bus toggle rates in CAN/LIN transceiver support circuits. |
| Output Drive Strength | ±8.0 mA @ VOH/VOL - Sustains signal integrity across 50 Ω PCB traces and multi-drop buses in body electronics modules. |
| Input Voltage Tolerance | -0.5 V to +7.0 V - Allows safe connection to higher-voltage sensors or legacy 5 V peripherals without external clamping. |
| Ambient Temperature Range | -40 °C to +125 °C - Qualified for powertrain and front-end ADAS applications where junction temperatures exceed 105 °C. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets automotive board-level ESD robustness requirements per ISO 10605. |
| Power Dissipation (Ptot) | 500 mW max @ Tamb ≤ 98 °C - Thermal derating slope of 9.6 mW/K enables stable operation in sealed ECUs. |
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 (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (Output Enable) | Active-HIGH control per buffer; drives corresponding nY into high-Z when LOW - enables time-multiplexed bus sharing. |
| 2, 5, 9, 12 | nA (Data Input) | CMOS-compatible input with Schmitt-trigger hysteresis - rejects <1.0 Vpp noise on long harness lines. |
| 3, 6, 8, 11 | nY (Data Output) | Non-inverting buffered output with 3-state capability - isolates downstream loads during sleep mode. |
| 7 | GND | Ground reference for all I/O and internal logic - requires low-inductance connection to minimize ground bounce in multi-buffer switching. |
| 14 | VCC | Primary supply rail - decoupling capacitor (100 nF X7R) required within 3 mm for stable 100+ MHz edge rates. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including lifetime reliability testing per stress conditions. |
| Input voltage tolerance beyond VCC | Accepts inputs up to +7.0 V while VCC = 2.0–5.5 V - eliminates need for external voltage translators in mixed-supply systems. |
| Side-wettable flanks (SWF) | Enables automated optical inspection of solder fillets on all 14 terminals - critical for zero-defect manufacturing in Tier 1 ECU assembly. |
| Balanced propagation delays | tpd matching ≤ 0.5 ns between channels - ensures deterministic timing in parallel data paths like sensor fusion interfaces. |
| Low ICC standby current | 2.0 μA max @ VCC = 5.5 V - reduces quiescent power in always-on gateway modules during vehicle sleep states. |
Applications
| Engine Control Unit (ECU) Signal Conditioning | ADAS Camera Interface Buffering |
|---|---|
Use Scenario: Isolating and driving diagnostic signals (e.g., knock sensor outputs, camshaft position pulses) to microcontroller ADC inputs across noisy 12 V engine bay environments. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state control synchronizing signal capture windows during MCU DMA bursts. Use Value: Schmitt-trigger inputs reject ignition coil EMI; ±8 mA drive maintains 50 Ω line termination integrity over 15 cm PCB traces. |
Use Scenario: Level-shifting and buffering MIPI CSI-2 clock/data lanes between image sensor and SoC in surround-view camera modules. IC Role / Device Role / Timing Role: Quad channel repeater ensuring matched tpd across differential pairs to preserve setup/hold margins. Use Value: 3.3 ns max tpd at 5 V/15 pF meets 100 MHz pixel clock timing budgets; DHVQFN thermal performance sustains 85 °C junction temp. |
| Body Control Module (BCM) Bus Isolation | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Enabling/disabling LIN bus transceivers and door module peripherals via centralized MCU GPIOs in low-power sleep/wake cycles. IC Role / Device Role / Timing Role: 3-state gate controlling bidirectional LIN signal path; nOE synchronized to MCU wake-up interrupt. Use Value: High-Z isolation reduces standby current by >95% vs. passive pull-ups; AEC-Q100 qualification ensures 15-year field life. |
Use Scenario: Interfacing torque sensor analog outputs and resolver feedback signals to EPS motor controller ADCs amid high-current inverter switching noise. IC Role / Device Role / Timing Role: Noise-immune buffer isolating sensitive analog front-end from digital control logic ground domains. Use Value: Input hysteresis >0.5 V suppresses 100 kHz PWM coupling; GND pin placement minimizes shared-impedance crosstalk. |
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 |
|---|---|---|---|
| 74VHCT126BQ-Q100 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout, package, and AEC-Q100 rating | Required when interfacing with legacy 5 V TTL logic or microcontrollers lacking CMOS-level output swing | Select when system uses mixed 5 V TTL and CMOS logic; otherwise prefer 74VHC126BQ-Q100 for lower input threshold noise margin. |
| SN74LVC126AQDRQ1 | Lower VCC range (1.65–3.6 V); 3.3 V only; different pinout (SOIC-14); same AEC-Q100 Grade 1 | Suitable for 3.3 V-only domains (e.g., infotainment SoCs); not pin-compatible; lacks >5 V input tolerance | Choose only for pure 3.3 V designs requiring TI's LVC family ecosystem; avoid if 5 V sensor interfacing or legacy compatibility needed. |
Compared with 74VHCT126BQ-Q100, this part offers superior noise immunity via CMOS input thresholds but sacrifices TTL interoperability; versus SN74LVC126AQDRQ1, it supports wider supply and input voltage ranges critical for heterogeneous automotive subsystems.
Availability
74VHC126BQ-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and electric power steering systems requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74VHC126BQ-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 leading semiconductor manufacturer specializing in high-performance, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74VHC-Q100 series targets automotive signal integrity applications, delivering AEC-Q100 qualified logic devices with enhanced ESD robustness, wide temperature operation, and package innovations like side-wettable flanks for automated manufacturing.
FAQ
What is the maximum input voltage the 74VHC126BQ-Q100 can tolerate?
The 74VHC126BQ-Q100 accepts input voltages from -0.5 V to +7.0 V, independent of VCC level. This allows safe interfacing with 5 V or 12 V sensors without external protection diodes, provided input current remains within ±20 mA clamping limits per Absolute Maximum Ratings Table 4.
Does the DHVQFN14 package require special PCB layout considerations?
Yes: the SOT762-1 package demands a thermal pad footprint matching the 2.1 × 2.6 mm exposed die pad, with ≥4 thermal vias (0.3 mm diameter) connecting to inner ground planes. Side-wettable flanks require solder mask defined pads and 0.15 mm stencil aperture reduction to prevent bridging during reflow.
How does the 74VHC126BQ-Q100 differ from the 74VHCT126BQ-Q100 variant?
The 74VHC126BQ-Q100 uses CMOS input thresholds (VIH ≈ 0.7×VCC), while the 74VHCT126BQ-Q100 uses TTL thresholds (VIH = 2.0 V min). Both share identical pinout, package, AEC-Q100 qualification, and output specs - selection depends solely on upstream logic family voltage levels.
Can this device drive a 50 Ω transmission line directly?
Yes: with ±8.0 mA output drive at VOL/VOH specifications, it can terminate and drive 50 Ω lines at 3.3 V or 5 V logic levels. For clean edges, place a series 22 Ω resistor near the output pin to dampen reflections, especially for trace lengths >5 cm at >50 MHz toggle rates.
74VHC126BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74VHC
- 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:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74VHC126BQ-Q100X FAQ
1.How can I place an order for 74VHC126BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC126BQ-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 74VHC126BQ-Q100X reliable?
The price and inventory of 74VHC126BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC126BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74VHC126BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC126BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC126BQ-Q100X?
74VHC126BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC126BQ-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 74VHC126BQ-Q100X?
For technical support, including 74VHC126BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC126BQ-Q100X requirements.
6.How does Aetrix verify that 74VHC126BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74VHC126BQ-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 74VHC126BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74VHC126BQ-Q100X?
All 74VHC126BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC126BQ-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 74VHC126BQ-Q100X part is unused and in its original packaging.
Return procedure for 74VHC126BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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