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Nexperia USA Inc. 74AHCT02BQ-Q100X
- Part No.:
- 74AHCT02BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHCT02BQ-Q100X.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
74AHCT02BQ-Q100 from Nexperia is an automotive-qualified quad 2-input NOR gate in DHVQFN14 package, operating from -40 °C to +125 °C with TTL-level inputs, 5.5 V max supply voltage, and propagation delay as low as 3.8 ns (CL = 15 pF, VCC = 5 V). It delivers balanced timing, Schmitt-trigger inputs, and input overvoltage tolerance for robust logic interfacing in engine control units and body electronics.
For engineers reviewing the 74AHCT02BQ-Q100 datasheet, 74AHCT02BQ-Q100 pinout, 74AHCT02BQ-Q100 application, or 74AHCT02BQ-Q100 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, TTL-compatible input thresholds, DHVQFN thermal performance, and verified NOR logic behavior across automotive temperature extremes.
Technical Context
This device implements four independent 2-input NOR gates using high-speed Si-gate CMOS technology, pin-compatible with LSTTL. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure seamless integration with legacy 5 V logic systems.
All inputs feature Schmitt-trigger action for noise immunity and accept voltages up to 7.0 V regardless of VCC, enabling mixed-voltage signal conditioning. Propagation delays are tightly balanced between channels, supporting synchronous logic design in safety-critical automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NOR gate - provides four independent OR-NOT operations per package |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures stable operation across automotive battery transients |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - compatible with standard TTL output levels |
| Propagation Delay | 3.8 ns typical (CL = 15 pF, VCC = 5 V) - enables high-speed combinatorial logic in real-time control paths |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood and powertrain applications |
| AEC-Q100 Grade | Grade 1 - certified for automotive use per Automotive Electronics Council requirements |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level electrostatic events |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, no leads, side-wettable flanks for AOI-compatible solder joint inspection; exposed thermal pad (non-electrical, optional GND connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1Y, 2Y, 3Y, 4Y | Active-low NOR outputs - drive downstream CMOS/TTL loads with VOH ≥ 3.94 V (IO = −8 mA) |
| 2, 5, 8, 11 | 1A, 2A, 3A, 4A | First input per gate - accepts TTL/CMOS levels; Schmitt-triggered for noise rejection |
| 3, 6, 9, 12 | 1B, 2B, 3B, 4B | Second input per gate - identical electrical behavior to A inputs |
| 7 | GND | Ground reference (0 V) - mandatory connection for logic reference and power return |
| 14 | VCC | Positive supply - must be decoupled locally; supports 4.5–5.5 V operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across -40 °C to +125 °C ambient, including lifetime reliability testing |
| TTL-level input compatibility | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V supply - interoperable with legacy microcontrollers and discrete logic |
| Schmitt-trigger inputs | Hysteresis on all 8 inputs - rejects <150 mV noise spikes without external filtering components |
| Overvoltage-tolerant inputs | Accepts up to 7.0 V regardless of VCC - enables safe interfacing with higher-voltage sensors or buses |
| DHVQFN thermal enhancement | 0.85 mm profile with side-wettable flanks - improves heat dissipation and enables automated optical solder inspection |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Combining crankshaft and camshaft position signals to validate engine synchronization before fuel injection. IC Role / Device Role / Timing Role: Quad NOR gate performs real-time logical validation of dual-sensor redundancy; each gate processes one sensor pair. Use Value: Enables fail-safe detection of mismatched timing signals with sub-10 ns decision latency, meeting ASIL-B diagnostic coverage requirements. |
Use Scenario: Interlocking door lock/unlock commands with ignition status and gear position to prevent unintended actuation. IC Role / Device Role / Timing Role: Implements hardware-enforced AND-NOR logic for command arbitration, independent of MCU firmware execution. Use Value: Guarantees deterministic response within 7.5 ns (max), eliminating race conditions during vehicle startup/shutdown sequences. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) Controller |
Use Scenario: Debouncing radar object detection pulses while preserving edge timing for time-of-flight calculations. IC Role / Device Role / Timing Role: NOR gate configured as active-low SR latch with Schmitt-trigger inputs filters contact bounce without adding MCU interrupt latency. Use Value: Reduces false-positive obstacle alerts by rejecting <100 ns glitches, maintaining system-level functional safety integrity. |
Use Scenario: Validating torque sensor cross-checks and motor phase current feedback before applying steering assist. IC Role / Device Role / Timing Role: Hardware-level voting logic compares redundant analog-to-digital converter outputs via NOR-based majority decision. Use Value: Achieves <5 ns inter-gate skew for synchronized sampling windows, critical for ISO 26262 ASIL-C torque path monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT02PW-Q100 | TSSOP14 package (4.4 mm width); 0.9 mm height; no side-wettable flanks | Less suitable for AOI-dependent high-volume SMT lines; lower thermal conductivity than DHVQFN | Select when board space allows wider footprint and thermal demands are moderate |
| 74AHC02BQ-Q100 | CMOS-level inputs (VIH = 3.85 V min at VCC = 5.5 V); identical package and speed | Requires CMOS-compatible drivers; not interoperable with legacy TTL outputs | Select only when driving circuitry guarantees ≥3.85 V HIGH levels; avoids level-shifting overhead |
Compared with 74AHCT02BQ-Q100, the TSSOP variant trades AOI capability and thermal performance for easier manual rework, while the AHC version shifts input compatibility from TTL to CMOS - requiring full signal chain review but enabling lower static power in mixed-voltage domains.
Availability
74AHCT02BQ-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and electric power steering controllers requiring stable component supply across automotive production lifecycles.
Supply support for 74AHCT02BQ-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 logic, analog, and discrete components, with core expertise in automotive-grade reliability and high-volume manufacturing.
This device belongs to Nexperia's AEC-Q100-qualified 74AHCT logic family, designed specifically for robust, pin-compatible replacement of legacy TTL in automotive powertrain, chassis, and safety systems.
FAQ
Is 74AHCT02BQ-Q100 compatible with 3.3 V logic systems?
No - the 74AHCT02BQ-Q100 is specified only for 4.5 V to 5.5 V operation and requires TTL-level inputs (VIH ≥ 2.0 V). Driving it from a 3.3 V microcontroller without level translation risks unreliable HIGH recognition due to insufficient VIH margin. Use 74AHC02BQ-Q100 for 3.3 V–5.5 V mixed-supply designs.
What is the function of the exposed thermal pad on the DHVQFN package?
The exposed pad (Pin 1 index area) has no electrical function and requires no connection. If soldered, it must remain electrically floating or be tied to GND - it serves solely to enhance thermal conduction from the die to the PCB, improving power dissipation capability and long-term reliability in high-temperature automotive environments.
Can inputs be driven above VCC without damage?
Yes - all inputs tolerate voltages up to +7.0 V regardless of VCC level, per Absolute Maximum Ratings. This enables direct interfacing with 12 V sensor outputs or CAN transceiver logic pins without external clamping diodes, provided input current remains within ±20 mA limits.
How does Schmitt-trigger action improve noise immunity in automotive environments?
Schmitt-trigger inputs provide ~300 mV hysteresis (e.g., VIH = 2.0 V, VIL = 0.8 V at VCC = 5 V), rejecting fast transients and EMI-induced ringing on long harness traces. This eliminates need for external RC filters in body electronics wiring, reducing BOM count and PCB area while maintaining deterministic switching thresholds across temperature.
74AHCT02BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- NOR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHCT02BQ-Q100X FAQ
1.How can I place an order for 74AHCT02BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT02BQ-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 74AHCT02BQ-Q100X reliable?
The price and inventory of 74AHCT02BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT02BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74AHCT02BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT02BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT02BQ-Q100X?
74AHCT02BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT02BQ-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 74AHCT02BQ-Q100X?
For technical support, including 74AHCT02BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT02BQ-Q100X requirements.
6.How does Aetrix verify that 74AHCT02BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74AHCT02BQ-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 74AHCT02BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74AHCT02BQ-Q100X?
All 74AHCT02BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT02BQ-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 74AHCT02BQ-Q100X part is unused and in its original packaging.
Return procedure for 74AHCT02BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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