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Nexperia USA Inc. 74LVC126ABQ-Q100X
- Part No.:
- 74LVC126ABQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74LVC126ABQ-Q100X.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,050
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Product details
Overview
74LVC126ABQ-Q100 from Nexperia is an automotive-qualified quad buffer/line driver with 3-state outputs, 5 V tolerant I/O, and Schmitt-trigger inputs. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage interfacing (3.3 V ↔ 5 V), and features IOFF partial power-down protection. Used in automotive body control modules for signal level translation between microcontrollers and legacy 5 V sensors.
For engineers reviewing the 74LVC126ABQ-Q100 datasheet, 74LVC126ABQ-Q100 pinout, 74LVC126ABQ-Q100 application, or 74LVC126ABQ-Q100 equivalent, key selection criteria include 5 V tolerance, -40 °C to +125 °C operation, DHVQFN14 package with side-wettable flanks, and AEC-Q100 Grade 1 qualification for automotive reliability.
Technical Context
This device implements four independent non-inverting buffers, each with a dedicated active-HIGH output enable (nOE) controlling high-impedance OFF-state. Schmitt-trigger inputs tolerate slow-rising signals common in automotive sensor interfaces, while IOFF circuitry blocks backflow current during partial power-down-critical for domain controller hot-swap scenarios.
All inputs accept voltages up to 5.5 V regardless of VCC (1.2–3.6 V), enabling direct connection to 5 V peripherals without external level shifters. Propagation delay is ≤6.0 ns at VCC = 3.3 V, and output skew is guaranteed ≤1.5 ns across channels-supporting synchronized signal routing in multi-channel CAN/LIN gateway designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 1.2 V to 3.6 V - enables operation from single-cell LiFePO₄ (≈3.2 V) or dual-cell alkaline (≈3.0 V) rails |
| I/O voltage tolerance | Up to 5.5 V - allows direct interface with legacy 5 V sensors, actuators, and displays without external translators |
| Operating temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications |
| Propagation delay | ≤6.0 ns at VCC = 3.3 V - ensures timing compliance in 25 MHz+ digital control loops |
| IOFF leakage | ±20 μA at VCC = 0 V, VI/VO = 5.5 V - prevents damaging back-current when MCU is powered down but sensor remains live |
| ESD robustness | HBM >2000 V, CDM >1000 V - withstands assembly handling and in-vehicle electrostatic events |
| Output drive | ±24 mA at VCC = 3.0 V - sufficient to drive 50 Ω transmission lines or multiple CMOS inputs |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, no leads, exposed thermal pad (GND-connected), side-wettable flanks for AOI-compatible solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (output enable) | Active-HIGH control per buffer; drives output to high-Z when LOW - enables bus sharing and dynamic channel isolation |
| 2, 5, 9, 12 | nA (input) | Non-inverting data input with Schmitt-trigger threshold - rejects noise on long harness runs in vehicle cabins |
| 3, 6, 8, 11 | nY (output) | Buffered, 5 V tolerant output - drives downstream logic or analog front-ends with rail-to-rail swing |
| 7 | GND | Ground reference and substrate connection point - must be low-inductance plane for EMI suppression |
| 14 | VCC | Core supply input - decoupling capacitor required within 3 mm for stable 3.3 V operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient - meets OEM requirements for engine control units and ADAS domain controllers |
| 5 V tolerant I/O | Inputs and outputs withstand 0–5.5 V regardless of VCC - eliminates discrete level shifters in mixed-voltage clusters (e.g., 3.3 V MCU + 5 V LIN transceivers) |
| IOFF partial power-down | Outputs disabled and leakage limited to ±20 μA when VCC = 0 V - prevents backfeed into unpowered subsystems during sleep mode |
| Schmitt-trigger inputs | Hysteresis ≥0.3 V at VCC = 3.3 V - rejects electromagnetic noise on 1–2 m wiring harnesses without external RC filtering |
| DHVQFN14 with side-wettable flanks | Enables automated optical inspection of solder joints - improves manufacturing yield and field-reliability traceability in Tier 1 production |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
|
Use Scenario: Translating GPIO signals from a 3.3 V MCU to 5 V dashboard backlight drivers and LED segment controllers. IC Role / Device Role / Timing Role: Quad buffer isolates MCU pins, provides 5 V drive capability, and synchronizes enable timing across four display segments. Use Value: Eliminates four discrete level shifters, reduces BOM count by 75%, and maintains <1.5 ns inter-output skew for flicker-free illumination sequencing. |
Use Scenario: Interfacing a 3.3 V automotive microcontroller with legacy 5 V CAN transceiver enable lines and diagnostic LEDs. IC Role / Device Role / Timing Role: Buffer isolates MCU outputs from noisy CAN bus ground bounce; Schmitt inputs reject coupled transients during bus arbitration. Use Value: Prevents false enable/disable toggling during ESD events, ensuring CAN node stays online during ISO 10605 testing (±8 kV contact discharge). |
| Power Distribution Unit (PDU) | ADAS Camera Power Sequencing |
|
Use Scenario: Driving 5 V relay coils and status indicators from a 3.3 V safety MCU in a 12 V vehicle electrical architecture. IC Role / Device Role / Timing Role: 3-state outputs allow shared control bus; IOFF prevents backfeed when MCU resets during load dump events. Use Value: Enables safe hot-plug of PDU modules without disrupting main MCU supply; meets ISO 7637-2 Pulse 5a (load dump) immunity requirements. |
Use Scenario: Controlling power-on sequencing of 5 V image sensor and 3.3 V ISP in an automotive camera module. IC Role / Device Role / Timing Role: Independent nOE pins sequence sensor power-up before ISP clock enable, avoiding initialization race conditions. Use Value: Guarantees clean power-up order with <10 ns inter-channel skew - prevents image corruption during cold start at -40 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC126AQPWRQ1 | TSSOP14 package (SOT402-1); same electrical specs; no side-wettable flanks | Lacks AOI-compatible solder joint inspection - less suitable for high-volume automated SMT lines requiring 100% solder verification | Select when board space permits larger TSSOP footprint and AOI is not mandated by manufacturing process. |
| 74LVC126APW-Q100 | Same TSSOP14 package as SN74LVC126AQPWRQ1; identical pinout and specs | Identical to SN74LVC126AQPWRQ1 - both are Nexperia-branded TSSOP variants with identical qualification | Prefer 74LVC126APW-Q100 for consistency with Nexperia's automotive portfolio documentation and support channels. |
Compared with SN74LVC126AQPWRQ1 and 74LVC126APW-Q100, the 74LVC126ABQ-Q100 offers superior manufacturability via side-wettable flanks in DHVQFN14, enabling full AOI coverage without X-ray inspection-critical for zero-defect automotive production targets.
Availability
74LVC126ABQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, power distribution units, and ADAS camera sequencing requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for 74LVC126ABQ-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 specializing in high-performance, high-reliability logic, analog, and MOSFET solutions, with leadership in automotive-grade components.
The 74LVC126A-Q100 belongs to Nexperia's automotive logic family, designed specifically for voltage translation and signal buffering in harsh-temperature automotive subsystems where robustness, low power, and AEC-Q100 compliance are mandatory.
FAQ
Is the 74LVC126ABQ-Q100 pin-compatible with standard 74LVC126A devices?
Yes - it shares identical logic functionality, pin assignment, and electrical characteristics with non-automotive 74LVC126A variants. The DHVQFN14 (SOT762-1) package matches the pinout shown in Figure 5 of the datasheet, and all 14 terminals map directly to the same signal roles (nOE, nA, nY, VCC, GND). No PCB redesign is needed when upgrading to AEC-Q100 qualification.
Can the 74LVC126ABQ-Q100 drive 50 Ω transmission lines directly?
Yes - at VCC = 3.3 V, it delivers ±24 mA output current, supporting 50 Ω line driving with ≤0.55 V VOL and ≥2.2 V VOH under load. This enables direct connection to LVCMOS receivers without series termination, provided trace length remains under 10 cm to maintain signal integrity at 25 MHz.
What is the purpose of the exposed thermal pad on the DHVQFN14 package?
The exposed pad (terminal 1 index area) is internally connected to GND and serves as a primary thermal path. Though not electrically required to be soldered, grounding it improves thermal resistance by ≈20 °C/W and enhances mechanical stability. If soldered, the land must remain floating or connect to GND - never to VCC or signal nets.
Does the IOFF feature protect against reverse current when only one supply rail is active?
Yes - IOFF activates automatically when VCC = 0 V, disabling all outputs and limiting backflow current to ±20 μA even if 5 V is applied to inputs or outputs. This protects powered-down MCUs during battery disconnect/reconnect sequences and meets ISO 16750-2 requirements for undervoltage resilience.
74LVC126ABQ-Q100X 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74LVC126ABQ-Q100X FAQ
1.How can I place an order for 74LVC126ABQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC126ABQ-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 74LVC126ABQ-Q100X reliable?
The price and inventory of 74LVC126ABQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC126ABQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74LVC126ABQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC126ABQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC126ABQ-Q100X?
74LVC126ABQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC126ABQ-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 74LVC126ABQ-Q100X?
For technical support, including 74LVC126ABQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC126ABQ-Q100X requirements.
6.How does Aetrix verify that 74LVC126ABQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74LVC126ABQ-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 74LVC126ABQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74LVC126ABQ-Q100X?
All 74LVC126ABQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC126ABQ-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 74LVC126ABQ-Q100X part is unused and in its original packaging.
Return procedure for 74LVC126ABQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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