My Inquiry
My Account
NXP Semiconductors 74AHCT02BQ,115
- Part No.:
- 74AHCT02BQ,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHCT02BQ,115.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,650
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AHCT02BQ,115 from Nexperia is a quad 2-input NOR gate in DHVQFN14 package, designed for TTL-level logic interfacing in industrial control and digital signal routing. It operates from 4.5 V to 5.5 V, delivers propagation delay as low as 3.8 ns (CL = 15 pF), supports -40 °C to +125 °C ambient range, and features Schmitt-trigger inputs for noise immunity in noisy environments.
For engineers reviewing the 74AHCT02BQ,115 datasheet, 74AHCT02BQ,115 pinout, 74AHCT02BQ,115 application, or 74AHCT02BQ,115 equivalent, this page provides verified pin mapping, real-world timing behavior under load, thermal-enhanced QFN packaging details, and validated alternatives for logic-level translation and gate-level combinational design.
Technical Context
The 74AHCT02BQ,115 implements four independent 2-input NOR gates using Si-gate CMOS technology with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V). Its output stage drives ±8 mA loads while maintaining VOH ≥ 3.94 V and VOL ≤ 0.36 V under specified conditions.
It integrates ESD protection per JS-001 (HBM > 2000 V) and JS-002 (CDM > 1000 V), and uses a thermal-enhanced DHVQFN14 package (SOT762-1) with exposed die pad for improved power dissipation up to 500 mW at Tamb ≤ 98 °C before derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NOR gate - enables compact implementation of OR-invert logic in bus arbitration or enable/disable control paths. |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL systems without level-shifting circuitry. |
| Propagation Delay (tpd) | 3.8 ns typical (CL = 15 pF, VCC = 5 V) - supports reliable operation in high-speed digital control loops up to ~100 MHz toggle rate. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees robust recognition of legacy TTL outputs and noise margin against ground bounce. |
| Output Drive | ±8 mA - sufficient to drive multiple LSTTL inputs (fan-out ≥ 10) or small capacitive loads (< 50 pF) without buffering. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood industrial automation, motor control, and power supply monitoring applications. |
| ESD Rating | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 Level 2 requirements for board-level handling and system integration. |
Pinout & Package
DHVQFN14 package (SOT762-1): 2.5 mm × 3.0 mm × 0.85 mm body, no leads, thermally enhanced with exposed die pad (non-soldered or floating/grounded per layout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1Y, 2Y, 3Y, 4Y | Active-low NOR outputs - each sinks or sources up to 8 mA; compatible with LSTTL fan-out and CMOS inputs. |
| 2, 5, 8, 11 | 1A, 2A, 3A, 4A | First input per gate - accepts TTL-level signals; Schmitt-trigger action rejects sub-10 ns noise spikes. |
| 3, 6, 9, 12 | 1B, 2B, 3B, 4B | Second input per gate - identical electrical characteristics to A inputs; enables dual-input logic combination. |
| 7 | GND | Ground reference (0 V) - must be low-inductance connection; shared return for all four gates' current paths. |
| 14 | VCC | Positive supply - decoupling capacitor (100 nF ceramic) required within 3 mm for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V supply - eliminates need for external level shifters when interfacing with legacy microcontrollers or FPGAs. |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V - suppresses chatter on slow-rising or noisy control lines such as reset, enable, or fault signals. |
| Balanced propagation delays | tpLH and tpHL match within 0.3 ns (typ.) - prevents duty-cycle distortion in clocked logic or feedback paths. |
| Thermal-enhanced QFN | RθJA = 104 K/W (SOT762-1) - enables sustained 500 mW dissipation at 98 °C ambient before derating begins. |
| Wide temperature range | Specified from -40 °C to +125 °C - supports deployment in unregulated enclosures, motor drives, and industrial PLC I/O modules. |
Applications
| Industrial Bus Arbitration | Microcontroller Reset Logic |
|---|---|
Use Scenario: Managing shared access to RS-485 or CAN transceivers among multiple controllers in a distributed I/O rack. IC Role / Device Role / Timing Role: NOR gate combines BUSY signals from three masters; output asserts low when any is active, blocking other requests. Use Value: Eliminates need for dedicated arbiter IC; propagation delay < 7 ns ensures deterministic response under 1 Mbps bus rates. |
Use Scenario: Generating synchronized reset pulses for MCU, FPGA, and peripheral ICs during power-up or brownout recovery. IC Role / Device Role / Timing Role: NOR gate combines POR, watchdog timeout, and manual reset - output goes high only when all are inactive. Use Value: Schmitt-trigger inputs reject noise on long reset traces; TTL thresholds ensure compatibility with discrete reset ICs like MAX809. |
| Motor Driver Enable Control | Power Sequencing Logic |
Use Scenario: Enabling H-bridge drivers only when both direction and enable signals are valid, preventing shoot-through faults. IC Role / Device Role / Timing Role: Each NOR gate monitors one half-bridge pair; output disables gate driver if either input is asserted. Use Value: Sub-10 ns delay ensures fast disable response (< 100 ns) critical for MOSFET safety margins in 20 kHz PWM inverters. |
Use Scenario: Controlling startup order of 3.3 V, 5 V, and 12 V rails in embedded power supplies using discrete supervisor ICs. IC Role / Device Role / Timing Role: NOR gates implement AND-NOT logic between rail-good signals to generate sequenced enable strobes. Use Value: Guaranteed VIH/VIL margins prevent false triggering during rail ramp-up; 125 °C rating supports placement near hot regulators. |
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,118 | TSSOP14 package (SOT402-1); 4.4 mm body width; RθJA = 137 K/W; same electrical specs. | Lower thermal performance; suitable for space-constrained PCBs where QFN rework is impractical. | Select when hand-soldering or optical inspection of solder joints is required; avoid in >85 °C ambient continuous operation. |
| SN74AHCT02DR | SOIC-14 package (TI); JEDEC MS-012 compliant; RθJA = 120 K/W; identical logic and voltage specs. | Higher profile (1.75 mm height); easier wave-soldering but larger footprint than DHVQFN. | Choose for legacy assembly lines or mixed-technology boards where QFN requires separate reflow profiling. |
Compared with 74AHCT02BQ,115, the TSSOP variant trades thermal efficiency for solderability, while the SOIC version offers mechanical robustness at the cost of board area and thermal resistance - all maintain identical logic behavior and TTL interface compatibility.
Availability
74AHCT02BQ,115 is available at Aetrix Electronics and suitable for industrial bus arbitration, microcontroller reset logic, motor driver enable control, and power sequencing applications requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT02BQ,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 semiconductors, delivering high-performance logic, analog, and discrete devices optimized for efficiency and reliability.
The 74AHCT series targets industrial and automotive-adjacent applications requiring TTL-compatible logic with extended temperature operation and robust ESD tolerance - specifically engineered for noise-immune digital control in harsh environments.
FAQ
What is the maximum recommended operating frequency for 74AHCT02BQ,115?
The device does not specify a maximum clock frequency, but its typical propagation delay of 3.8 ns (CL = 15 pF) supports reliable toggling up to approximately 100 MHz in non-critical timing paths. For synchronous systems, ensure setup/hold margins exceed 2× tpd under worst-case voltage and temperature conditions.
Can 74AHCT02BQ,115 be used with 3.3 V logic systems?
No - the 74AHCT02BQ,115 is strictly a 5 V TTL-compatible device with minimum VCC = 4.5 V and VIH threshold fixed at 2.0 V. Using it with 3.3 V inputs risks unreliable HIGH detection; for 3.3 V systems, select the 74AHC02BQ variant instead.
Is the exposed pad on the DHVQFN package electrically connected?
No - the exposed die pad (terminal 1 index area) has no internal electrical connection. Per Nexperia's datasheet, it may remain floating or be connected to GND for thermal improvement, but must not be tied to VCC or left unconnected in high-vibration environments without mechanical anchoring.
Does 74AHCT02BQ,115 support mixed-voltage interfacing between 5 V and 3.3 V domains?
It accepts 3.3 V as a valid HIGH input (since VIH = 2.0 V min), but its outputs swing to ~4.5 V (VOH) at 5 V VCC - directly driving 3.3 V CMOS inputs risks overvoltage damage. Use series resistors or level translators for safe bidirectional interfacing.
74AHCT02BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74AHCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Bulk
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHCT02BQ,115 FAQ
1.How can I place an order for 74AHCT02BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT02BQ,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 74AHCT02BQ,115 reliable?
The price and inventory of 74AHCT02BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT02BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHCT02BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT02BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT02BQ,115?
74AHCT02BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT02BQ,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 74AHCT02BQ,115?
For technical support, including 74AHCT02BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT02BQ,115 requirements.
6.How does Aetrix verify that 74AHCT02BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHCT02BQ,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 74AHCT02BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHCT02BQ,115?
All 74AHCT02BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT02BQ,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 74AHCT02BQ,115 part is unused and in its original packaging.
Return procedure for 74AHCT02BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT02BQ,115 Tags
-
SN74LVC1G14DBVR
Texas Instruments
-
SN74LVC1G14DCKR
Texas Instruments
-
SN74AHC1G14DBVR
Texas Instruments
-
SN74LVC1G08DBVR
Texas Instruments
-
SN74LVC1G08DCKR
Texas Instruments
-
SN74LVC1G32DCKR
Texas Instruments
-
SN74LVC1G04DBVR
Texas Instruments
.jpg)
-
74LVC1G08GW,125
Nexperia USA Inc.
-
SN74LVC1G04DCKR
Texas Instruments
-
SN74AHC1G08DBVR
Texas Instruments
-
SN74LVC1G32DBVR
Texas Instruments
-
SN74AHCT1G08DBVR
Texas Instruments
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
