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Nexperia USA Inc. 74VHCT126D-Q100J
- Part No.:
- 74VHCT126D-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74VHCT126D-Q100J.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,042
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Product details
Overview
74VHCT126D-Q100 from Nexperia is a quad non-inverting 3-state buffer/line driver with TTL-compatible input thresholds, designed for automotive signal routing and bus isolation. It operates from 4.5 V to 5.5 V, delivers ±8 mA output drive, supports -40 °C to +125 °C ambient range, and features active-HIGH output enable (nOE) per channel. It is used in CAN/LIN interface signal conditioning and body control module data buses.
For engineers reviewing the 74VHCT126D-Q100 datasheet, 74VHCT126D-Q100 pinout, 74VHCT126D-Q100 application, or 74VHCT126D-Q100 equivalent, this device serves as a high-reliability, AEC-Q100 Grade 1–qualified logic buffer for automotive powertrain and chassis subsystems requiring robust noise immunity and precise timing control.
Technical Context
This IC implements four independent non-inverting buffer stages, each with a dedicated active-HIGH output enable (nOE) controlling high-impedance (Z) state on its corresponding output (nY). Input logic levels conform to TTL thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V), enabling direct interfacing with legacy microcontrollers and transceivers.
Propagation delay is specified at 3.0 ns (typ) to 7.0 ns (max) under 5 V/50 pF load conditions; enable time (ten) and disable time (tdis) are tightly controlled at ≤9.0 ns and ≤11.5 ns respectively, ensuring deterministic bus arbitration timing in multi-drop configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V automotive power rails and tolerance against load-dump transients. |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - Matches TTL logic families without level-shifting, simplifying integration with legacy MCUs and transceivers. |
| Output Drive | ±8.0 mA - Sufficient to drive 50 pF loads with <7 ns propagation delay, supporting high-speed CAN/LIN bus stubs and PCB traces. |
| Operating Temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1, enabling use in engine bay and transmission control units. |
| Propagation Delay (tpd) | 3.0 ns (typ) to 7.0 ns (max) at VCC = 5 V, CL = 50 pF - Enables sub-100 MHz bus clocking with predictable setup/hold margins. |
| Enable/Disable Time | ten ≤ 9.0 ns, tdis ≤ 11.5 ns at VCC = 5 V, CL = 50 pF - Guarantees fast bus turnaround for time-critical arbitration protocols. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Meets automotive ESD robustness requirements for assembly and field operation. |
Pinout & Package
74VHCT126D-Q100 uses the SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.
| 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 dynamic bus sharing across multiple drivers. |
| 2, 5, 9, 12 | nA (Data Input) | Non-inverting TTL-level input; accepts VIH ≥ 2.0 V, VIL ≤ 0.8 V - interfaces directly with 5 V MCUs and transceivers. |
| 3, 6, 8, 11 | nY (Data Output) | 3-state buffered output; sinks/sours ±8 mA; transitions within 7 ns - drives PCB traces, stubs, or downstream receivers. |
| 7 | GND | Ground reference (0 V); must be low-inductance connection to minimize switching noise coupling. |
| 14 | VCC | Positive supply (4.5–5.5 V); requires local 100 nF ceramic decoupling near pin to suppress rail bounce. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40 °C to +125 °C operation with full electrical test coverage - eliminates need for customer requalification in automotive ECUs. |
| TTL-compatible inputs | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V - enables plug-in replacement of 74LS126 without redesigning upstream logic or adding level shifters. |
| Low propagation skew | Matched tpd across all four channels (<0.5 ns typical variation) - ensures simultaneous bus release in multi-driver arbitration schemes. |
| Side-wettable flanks (SO14 variant) | Lead geometry supports automated optical inspection (AOI) of solder joints - improves manufacturing yield in automotive SMT lines. |
| High noise immunity | Input hysteresis not specified, but Schmitt-trigger action confirmed for 74VHC variants; VHCT retains strong noise rejection via TTL threshold margins. |
Applications
| Body Control Module Bus Isolation | Engine Control Unit Signal Conditioning |
|---|---|
Use Scenario: Isolating LIN bus signals between door modules and central gateway to prevent fault propagation. IC Role / Device Role / Timing Role: Quad buffer provides channelized 3-state control, allowing individual door nodes to enter sleep mode while maintaining bus integrity. Use Value: Enables selective bus shutdown with <9 ns enable/disable timing, reducing system standby current by up to 40% versus always-on drivers. |
Use Scenario: Level-shifting and buffering sensor signals (e.g., knock sensor analog outputs digitized by ADC) before routing to MCU. IC Role / Device Role / Timing Role: Non-inverting buffer isolates noisy engine compartment signals from sensitive ADC inputs while preserving signal edge fidelity. Use Value: ±8 mA drive capability maintains signal integrity over 15 cm PCB traces; 7 ns max tpd avoids timing violations in 10 MHz sampling windows. |
| Transmission Control Unit Data Multiplexing | Advanced Driver Assistance System (ADAS) Camera Interface |
Use Scenario: Multiplexing gear position, clutch status, and torque request signals onto a shared diagnostic bus. IC Role / Device Role / Timing Role: Four independent 3-state buffers allow time-sliced transmission of discrete signals without contention. Use Value: Active-HIGH nOE pins simplify MCU GPIO control logic; propagation delay consistency ensures <100 ns inter-signal skew across all four channels. |
Use Scenario: Buffering parallel camera sensor data lanes (e.g., 8-bit YUV) to FPGA image processor in rear-view camera module. IC Role / Device Role / Timing Role: High-speed non-inverting driver maintains signal rise/fall times below 3 ns for 25 MHz pixel clocks. Use Value: 50 pF load drive capability supports direct connection to FPGA I/O banks; AEC-Q100 qualification ensures reliability in thermally stressed cabin environments. |
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 |
|---|---|---|---|
| 74VHC126D-Q100 | CMOS input thresholds (VIH ≥ 3.85 V @ 5.5 V); lower ICC (2 μA typ) | Better suited for mixed-voltage systems where upstream logic runs at 3.3 V or higher CMOS levels | Select when interfacing with 3.3 V or 5 V CMOS ASICs/FPGAs; avoid if driving legacy 5 V TTL. |
| SN74LVC126APWR | 3.3 V only (1.65–3.6 V), LVCMOS thresholds, smaller TSSOP14 package | Targeted at low-power infotainment head units, not under-hood applications | Choose for cost-sensitive 3.3 V domains; not AEC-Q100 qualified - unsuitable for powertrain or chassis. |
Compared with 74VHC126D-Q100 and SN74LVC126APWR, the 74VHCT126D-Q100 uniquely bridges legacy 5 V TTL logic and modern automotive temperature requirements - offering both interoperability and qualification where others sacrifice one or both.
Availability
74VHCT126D-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, and ADAS camera interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74VHCT126D-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 efficiency.
The 74VHCT126-Q100 belongs to Nexperia's automotive-qualified logic family, engineered specifically for signal integrity and thermal resilience in vehicle subsystems operating under harsh environmental stress.
FAQ
What is the maximum output current rating for 74VHCT126D-Q100?
The absolute maximum output current is ±25 mA per output (per Table 4), but the recommended operating condition specifies ±8.0 mA for VOH/VOL compliance at VCC = 4.5–5.5 V. Exceeding ±8 mA may cause VOL > 0.55 V or VOH < 3.70 V, violating TTL logic thresholds in real-world loads.
Can 74VHCT126D-Q100 operate at 3.3 V supply?
No - the 74VHCT126D-Q100 is specified only for VCC = 4.5 V to 5.5 V (Table 5). At 3.3 V, VIH minimum drops below required TTL thresholds (2.0 V), risking unreliable HIGH detection; static characteristics are not guaranteed below 4.5 V.
Is the SO14 package (SOT108-1) lead-free and RoHS compliant?
Yes - Nexperia confirms the 74VHCT126D-Q100 in SO14 packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free terminations and halogen-free molding compound per Nexperia's product compliance documentation.
How does the 3-state enable timing affect bus arbitration in LIN networks?
With ten ≤ 9.0 ns and tdis ≤ 11.5 ns at 5 V/50 pF, the 74VHCT126D-Q100 allows LIN master nodes to assert/relinquish bus control within one bit time at 19.2 kbps (52 μs/bit), preventing collision during header transmission and ensuring deterministic slave response windows.
74VHCT126D-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74VHCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74VHCT126D-Q100J FAQ
1.How can I place an order for 74VHCT126D-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT126D-Q100J 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 74VHCT126D-Q100J reliable?
The price and inventory of 74VHCT126D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT126D-Q100J is usually 5 days.
3.What payment methods are accepted for 74VHCT126D-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT126D-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT126D-Q100J?
74VHCT126D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT126D-Q100J 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 74VHCT126D-Q100J?
For technical support, including 74VHCT126D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT126D-Q100J requirements.
6.How does Aetrix verify that 74VHCT126D-Q100J is sourced from the original manufacturer or authorized distributors?
All 74VHCT126D-Q100J 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 74VHCT126D-Q100J meets industry standards.
7.What is the process for return or replacement of 74VHCT126D-Q100J?
All 74VHCT126D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT126D-Q100J, 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 74VHCT126D-Q100J part is unused and in its original packaging.
Return procedure for 74VHCT126D-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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