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Nexperia USA Inc. 74AHCT126PW-Q100,1
- Part No.:
- 74AHCT126PW-Q100,1
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT126PW-Q100,1.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,608
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Product details
Overview
74AHCT126PW-Q100 from Nexperia is an automotive-qualified quad buffer/line driver with 3-state outputs, TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), propagation delay of 3.0 ns (typ) at 5 V/15 pF, and operation from −40 °C to +125 °C in TSSOP14 package. It serves as a level-translating bus interface in automotive body control modules.
For engineers reviewing the 74AHCT126PW-Q100 datasheet, 74AHCT126PW-Q100 pinout, 74AHCT126PW-Q100 application, or 74AHCT126PW-Q100 equivalent, key selection criteria include TTL-level input compatibility, 3-state bus contention control, AEC-Q100 Grade 1 qualification, and thermal performance in TSSOP14 for under-hood ECUs.
Technical Context
This device implements four independent non-inverting buffers, each with active-HIGH output enable (nOE) controlling high-impedance OFF-state. Inputs feature Schmitt-trigger action and overvoltage tolerance up to 5.5 V, enabling mixed-voltage interfacing between 3.3 V logic and 5 V subsystems.
It operates strictly within AEC-Q100 Grade 1 temperature range (−40 °C to +125 °C), with static VIH/VIL thresholds fixed for TTL logic families and dynamic timing characterized at CL = 15 pF and CL = 50 pF loads. Enable/disable timing (ten = 4.7 ns typ, tdis = 6.9 ns typ at 5 V/15 pF) ensures precise bus arbitration in CAN/LIN gateway designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74AHCT - TTL-compatible inputs, CMOS outputs; enables direct replacement of legacy 74LS devices without pull-ups. |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches standard automotive 5 V rail; excludes 3.3 V operation unlike AHC variant. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - Guarantees robust noise margin vs. TTL sources (e.g., microcontroller GPIO, sensor ICs). |
| Propagation Delay | 3.0 ns (typ) at VCC = 5 V, CL = 15 pF - Supports >100 MHz bus toggle rates in low-latency diagnostics paths. |
| Output Drive | ±8 mA at VCC = 5 V - Sufficient to drive 50 pF traces or multiple 74-series inputs without buffering. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - Qualified for engine bay, transmission control, and ADAS domain controllers. |
| ESD Rating | HBM >2000 V, CDM >1000 V - Meets automotive board-level ESD immunity requirements per ISO 10605. |
Pinout & Package
TSSOP14 package (SOT402-1): plastic thin shrink small outline, 14 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad optional for thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (1–4) | Active-HIGH output enable inputs - Each controls one buffer's 3-state output independently; tied together for group control. |
| 2, 5, 9, 12 | nA (1–4) | Data inputs - TTL-compatible; accept 0–5.5 V regardless of VCC; Schmitt-triggered for noisy automotive environments. |
| 3, 6, 8, 11 | nY (1–4) | Buffered outputs - Drive buses or downstream logic; high-impedance when corresponding nOE = LOW. |
| 7 | GND | Ground reference - Must be low-inductance connection to minimize ground bounce during simultaneous switching. |
| 14 | VCC | Positive supply - Decoupling capacitor (100 nF ceramic) required within 5 mm for stable 5 V operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with lifetime reliability testing per automotive stress standards. |
| TTL-compatible input thresholds | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V supply - Ensures interoperability with legacy 74LS, microcontrollers, and discrete logic without level shifters. |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V input voltage independent of VCC - Enables safe interfacing with 5 V sensors while powered from 3.3 V rails (not applicable here; VCC = 4.5–5.5 V). |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V typical - Rejects slow-rising or noisy signals common in automotive harnesses and switch interfaces. |
| Side-wettable flanks (SWF) | Package geometry supports automated optical inspection (AOI) of solder joints - Critical for zero-defect manufacturing in Tier 1 automotive PCB assembly. |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
|
Use Scenario: Isolating and driving LIN bus transceiver enable lines and sensor status LEDs across different power domains. IC Role / Device Role: Quad buffer provides galvanically isolated signal conditioning and current gain for microcontroller GPIOs driving external loads. Use Value: Eliminates need for discrete transistors or dedicated level shifters; reduces BOM count by 4× in multi-channel LED/status line routing. |
Use Scenario: Buffering SPI clock and data lines between instrument cluster MCU and TFT display timing controller. IC Role / Device Role: Signal repeater with 3-state capability to prevent bus contention during display initialization and firmware updates. Use Value: Propagation delay <3.5 ns ensures setup/hold timing margins are maintained at 20 MHz SPI clock rates. |
| Powertrain Diagnostic Port | ADAS Camera Module Sync |
|
Use Scenario: Driving standardized OBD-II diagnostic lines (K-line, L-line) with controlled slew and ESD protection. IC Role / Device Role: Level-shifting buffer translating 3.3 V MCU UART signals to 5 V K-line voltage levels. Use Value: Input overvoltage tolerance and HBM >2 kV rating meet ISO 14230-4 physical layer immunity requirements. |
Use Scenario: Distributing frame sync pulses from central ADAS processor to multiple camera modules with matched skew. IC Role / Device Role: Low-skew fanout buffer ensuring <1 ns inter-output delay variation across four camera triggers. Use Value: Balanced propagation delays (tpd matching ≤0.5 ns) maintain pixel alignment accuracy in stereo vision systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHC126PW-Q100 | CMOS input thresholds (VIH = 3.85 V min at 5.5 V); lower ICC (2 μA typ vs. 20 μA typ at 5.5 V) | Requires 3.3 V or higher logic sources; unsuitable for direct 74LS replacement | Select when interfacing with modern 3.3 V MCUs and lowest quiescent current is critical. |
| SN74LVC126APWREP | 3.3 V only (1.65–3.6 V), LVCMOS thresholds, higher drive (±24 mA), no AEC-Q100 Grade 1 rating | Limited to cabin electronics; not qualified for under-hood use | Choose for cost-sensitive infotainment subsystems where extended temperature range is unnecessary. |
Compared with 74AHCT126PW-Q100, the AHC variant trades TTL compatibility for lower power and higher noise immunity, while the LVC part offers greater drive strength but sacrifices automotive qualification and voltage flexibility.
Availability
74AHCT126PW-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, powertrain diagnostic ports, and ADAS camera synchronization requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT126PW-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, reliable components for automotive, industrial, and consumer applications, with leadership in logic, MOSFETs, and ESD protection.
This device belongs to Nexperia's automotive-qualified logic portfolio, designed specifically for robust signal integrity and long-term reliability in harsh vehicular environments including engine control, chassis, and safety-critical subsystems.
FAQ
Is 74AHCT126PW-Q100 pin-compatible with standard 74HC126 or 74LS126?
Yes - it uses the same TSSOP14 pinout (SOT402-1) as industry-standard 74xx126 devices. Pin functions match exactly: 1OE–4OE on pins 1/4/10/13, nA inputs on 2/5/9/12, nY outputs on 3/6/8/11, GND on 7, VCC on 14. No PCB redesign is needed for drop-in replacement of 74LS126 in 5 V systems.
Can this device operate at 3.3 V supply?
No - the 74AHCT126PW-Q100 is specified only for 4.5 V to 5.5 V operation per Table 5. Attempting 3.3 V supply violates recommended conditions and results in undefined VIH/VIL behavior and degraded output drive. Use 74AHC126PW-Q100 for 3.3 V systems.
What is the purpose of the exposed thermal pad in the TSSOP14 package?
The exposed pad (pin 0) in SOT402-1 is non-electrical and optional for thermal enhancement. When soldered, it must remain floating or connect to GND; it improves thermal resistance by ~15 °C/W but is not required for functional operation in most automotive ambient conditions.
Does this part support hot-swap or live-insertion on a powered bus?
No - the device lacks Ioff (power-off protection) or IOZ (bus-hold) features. Applying input signals while VCC = 0 V may cause latch-up or excessive current flow. Always power VCC before asserting inputs, and use series resistors if hot-swap is required.
74AHCT126PW-Q100,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
74AHCT126PW-Q100,1 FAQ
1.How can I place an order for 74AHCT126PW-Q100,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT126PW-Q100,1 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 74AHCT126PW-Q100,1 reliable?
The price and inventory of 74AHCT126PW-Q100,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT126PW-Q100,1 is usually 5 days.
3.What payment methods are accepted for 74AHCT126PW-Q100,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT126PW-Q100,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT126PW-Q100,1?
74AHCT126PW-Q100,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT126PW-Q100,1 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 74AHCT126PW-Q100,1?
For technical support, including 74AHCT126PW-Q100,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT126PW-Q100,1 requirements.
6.How does Aetrix verify that 74AHCT126PW-Q100,1 is sourced from the original manufacturer or authorized distributors?
All 74AHCT126PW-Q100,1 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 74AHCT126PW-Q100,1 meets industry standards.
7.What is the process for return or replacement of 74AHCT126PW-Q100,1?
All 74AHCT126PW-Q100,1 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT126PW-Q100,1, 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 74AHCT126PW-Q100,1 part is unused and in its original packaging.
Return procedure for 74AHCT126PW-Q100,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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