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Nexperia USA Inc. 74AHC02BQ,115
- Part No.:
- 74AHC02BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHC02BQ,115.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,840
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Product details
Overview
74AHC02BQ,115 from Nexperia is a quad 2-input NOR gate in DHVQFN14 package, operating from 2.0 V to 5.5 V with CMOS-level inputs, propagation delay as low as 2.9 ns (VCC = 5 V, CL = 15 pF), and guaranteed operation from –40 °C to +125 °C. It provides discrete logic inversion and summation for digital control paths in industrial I/O modules, power sequencers, and FPGA companion logic.
For engineers reviewing the 74AHC02BQ,115 datasheet, 74AHC02BQ,115 pinout, 74AHC02BQ,115 application, or 74AHC02BQ,115 equivalent, this page delivers verified pin functions, thermal-enhanced QFN package details, TTL-compatible timing margins, and real-world use cases in high-reliability embedded systems.
Technical Context
This device implements four independent 2-input NOR gates using high-speed Si-gate CMOS technology, fully compliant with JEDEC Std 7-A and pin-compatible with LSTTL. Each gate features Schmitt-trigger action on all inputs, enabling noise-immune signal conditioning at the board edge.
Inputs tolerate voltages up to 7.0 V regardless of VCC, supporting mixed-voltage interfacing. The DHVQFN14 package (SOT762-1) integrates an exposed thermal pad (non-electrical, optional GND connection) and supports 9.6 mW/K power derating above 98 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NOR - enables compact implementation of active-low OR/NOT logic in control state machines |
| Supply Voltage Range | 2.0 V to 5.5 V - supports direct interface with 3.3 V and 5 V microcontrollers without level shifters |
| Propagation Delay | 2.9 ns typical (VCC = 4.5–5.5 V, CL = 15 pF) - ensures sub-5 ns timing closure in high-speed synchronous logic |
| Input Voltage Tolerance | –0.5 V to +7.0 V - allows safe interfacing with 5 V signals into 3.3 V systems and transient overvoltage resilience |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood, motor drive, and industrial PLC environments |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 Level 3 for robust board-level ESD immunity |
| Output Drive | ±8 mA (VCC = 4.5 V) - sufficient to directly drive multiple 74-series inputs or small LED indicators |
Pinout & Package
DHVQFN14 package (SOT762-1): 2.5 × 3.0 × 0.85 mm body, no leads, 14 terminals, exposed thermal pad (pin 1 index area marked; pad is non-electrical and may be left floating or connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1Y, 2Y, 3Y, 4Y | Active-low NOR outputs - each drives one logic stage with rail-to-rail swing and defined VOL/VOH |
| 2, 5, 8, 11 | 1A, 2A, 3A, 4A | First input per gate - accepts CMOS-level signals; Schmitt-triggered for hysteresis against slow edges |
| 3, 6, 9, 12 | 1B, 2B, 3B, 4B | Second input per gate - identical electrical behavior to A inputs; enables dual-input combinatorial logic |
| 7 | GND | Ground reference (0 V) - must be low-impedance; connects to PCB ground plane under thermal pad |
| 14 | VCC | Positive supply - decoupling capacitor (100 nF) required within 5 mm for stable high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides 0.3–0.5 V hysteresis per input, eliminating chatter on noisy or slow-rising control lines |
| Voltage-tolerant inputs | Accepts up to 7.0 V regardless of VCC, enabling safe 5 V signal injection into 3.3 V domains |
| Thermal-enhanced QFN | DHVQFN14 package delivers 9.6 mW/K derating above 98 °C - critical for sustained operation in sealed enclosures |
| Wide temperature range | Specified from –40 °C to +125 °C - validated across full range for industrial automation and motor control |
| Low static current | ICC ≤ 40 μA at VCC = 5.5 V - minimizes quiescent power in always-on supervisory circuits |
Applications
| Industrial PLC Input Conditioning | FPGA Configuration Glue Logic |
|---|---|
Use Scenario: Isolating and debouncing mechanical switch inputs before feeding to a PLC CPU. IC Role / Device Role / Timing Role: NOR gate acts as active-low OR combiner and noise filter; Schmitt inputs suppress contact bounce. Use Value: Eliminates need for external RC filters and software debounce, reducing BOM count and firmware complexity. |
Use Scenario: Generating reset synchronization and status flag arbitration between FPGA fabric and external peripherals. IC Role / Device Role / Timing Role: Provides deterministic, sub-5 ns combinational logic for asynchronous signal merging and polarity inversion. Use Value: Enables cycle-accurate reset coordination without consuming FPGA LUT resources or introducing routing delays. |
| Power Sequencer Enable Logic | Motor Driver Fault Combiner |
Use Scenario: Enabling DC-DC converters only when all upstream rails are valid and thermal limits are met. IC Role / Device Role / Timing Role: Four NOR gates implement AND-NOT logic (via De Morgan) to combine enable, fault, and timeout signals. Use Value: Delivers hardware-enforced sequencing with zero software dependency and <10 ns worst-case latency. |
Use Scenario: Aggregating overcurrent, overtemperature, and undervoltage fault signals from three half-bridge drivers. IC Role / Device Role / Timing Role: NOR gate performs active-low wired-OR of fault flags to trigger immediate gate shutdown. Use Value: Achieves <500 ns fault-to-shutdown response time - faster than microcontroller polling and immune to SW lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT02BQ,115 | TTL-level inputs (VIH = 2.0 V min), same speed and package | Better compatibility with legacy 5 V TTL outputs; slightly higher ICC at VCC = 5 V | Select when interfacing directly with 74LS/74F families or where input threshold matching to 5 V logic is required |
| SN74LVC02APW | TSSOP14 package, 1.65–5.5 V supply, 3.5 ns tpd (VCC = 3.3 V) | Lower max ambient rating (–40 °C to +125 °C not guaranteed), no Schmitt inputs | Choose for cost-sensitive consumer designs where Schmitt triggering and extended temp are not needed |
Compared with 74AHCT02BQ,115, the AHC variant offers superior noise immunity via Schmitt inputs and wider voltage tolerance; versus SN74LVC02APW, it delivers guaranteed industrial temperature operation and deterministic edge rejection - critical for safety-critical logic layers.
Availability
74AHC02BQ,115 is available at Aetrix Electronics and suitable for industrial PLCs, motor drive controllers, and FPGA-based test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC02BQ,115 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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and computing markets.
The 74AHC series targets high-speed, low-power CMOS logic applications demanding robustness, wide supply range, and industrial-grade reliability - especially where mixed-voltage interfacing and noise immunity are critical.
FAQ
Is the exposed thermal pad on the DHVQFN14 package electrically connected?
No - the exposed pad (under the DHVQFN14 body) has no internal electrical connection. Per Nexperia's datasheet, it may be left floating or soldered to GND for thermal improvement, but must never be tied to VCC or any other voltage. PCB land design should match SOT762-1 footprint with thermal vias to inner ground planes.
Can 74AHC02BQ,115 safely interface with 5 V TTL outputs?
Yes - its inputs tolerate up to +7.0 V regardless of VCC, and VIH is specified at 3.85 V (VCC = 5.5 V), exceeding standard TTL VOH (2.4 V min). However, for guaranteed noise margin with marginal TTL sources, verify that the driving device's VOH exceeds 3.85 V at load - otherwise consider 74AHCT02BQ,115 for native TTL thresholds.
What is the maximum output current per pin during steady-state operation?
The absolute maximum DC output current per pin is ±25 mA (per Table 4), but recommended operating conditions limit continuous output current to ±8 mA at VCC = 4.5 V (Table 6). Exceeding ±8 mA risks violating VOL/VOH specs and increases self-heating - sustained loads above this require external buffering or parallel outputs.
Does this device support hot-swap or live-insertion?
No - 74AHC02BQ,115 lacks powered-off protection or Ioff specification. Applying input signals while VCC = 0 V violates the absolute maximum rating for VI (–0.5 V min), risking latch-up or damage. Always ensure VCC is stable before asserting inputs, and use power-sequencing controllers in hot-swap systems.
74AHC02BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- 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:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V ~ 1.65V
- Input Logic Level - High:
- 1.5V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHC02BQ,115 FAQ
1.How can I place an order for 74AHC02BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC02BQ,115 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 74AHC02BQ,115 reliable?
The price and inventory of 74AHC02BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC02BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHC02BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC02BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC02BQ,115?
74AHC02BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC02BQ,115 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 74AHC02BQ,115?
For technical support, including 74AHC02BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC02BQ,115 requirements.
6.How does Aetrix verify that 74AHC02BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHC02BQ,115 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 74AHC02BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHC02BQ,115?
All 74AHC02BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC02BQ,115, 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 74AHC02BQ,115 part is unused and in its original packaging.
Return procedure for 74AHC02BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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