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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

Nexperia USA Inc. 74HC02BQ,115

Name: 74HC02BQ,115
Brand: Nexperia USA Inc.
SKU: 74HC02BQ,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HC02BQ,115

Manufacturer:: Nexperia USA Inc.

Category:: Gates and Inverters

Package:: 14-VFQFN Exposed Pad

Datasheet:: 74HC02BQ,115.pdf

Description:: IC GATE NOR 4CH 2-INP 14DHVQFN

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Product details

Overview

74HC02BQ,115 from Nexperia is a quad 2-input NOR gate in DHVQFN14 package (SOT762-1), operating from 2.0 V to 6.0 V supply, delivering CMOS-level input compatibility, propagation delay as low as 7 ns at VCC = 6.0 V, and guaranteed operation from −40 °C to +125 °C. It serves as a fundamental logic building block in digital control subsystems, bus arbitration circuits, and reset signal conditioning in industrial microcontroller interfaces.

For engineers reviewing the 74HC02BQ,115 datasheet, 74HC02BQ,115 pinout, 74HC02BQ,115 application, or 74HC02BQ,115 equivalent, key selection considerations include supply voltage range (2.0–6.0 V), output drive capability (±25 mA), thermal-enhanced QFN package footprint (2.5 × 3 × 0.85 mm), and guaranteed high-noise-immunity performance across extended temperature.

Technical Context

This device implements four independent 2-input NOR gates using silicon-gate CMOS technology, with input clamp diodes enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Each gate exhibits symmetrical HIGH/LOW output voltage thresholds defined by VCC-dependent VIH/VIL levels.

It complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards, supports HBM ESD protection >2000 V and CDM >1000 V, and features latch-up immunity exceeding 100 mA per JESD78 Class II Level B - confirming robustness in noisy industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quad 2-input NOR gate - provides four independent Boolean OR-NOT operations per package
Supply Voltage Range	2.0 V to 6.0 V - enables direct interface with 3.3 V and 5 V logic systems without level shifting
Propagation Delay (tpd)	7 ns (typ) at VCC = 6.0 V, CL = 50 pF - ensures timing-critical combinational logic meets sub-10 ns path budgets
Output Drive	±25 mA - sufficient to directly drive LED indicators, small MOSFET gates, or TTL inputs
Operating Temperature	−40 °C to +125 °C - qualified for under-hood, motor control, and industrial PLC applications
Input Clamp Diodes	Integrated - allows safe overvoltage input handling up to ±20 mA clamping current
Power Dissipation (Ptot)	500 mW (SOT762-1) - supported by thermal-enhanced DHVQFN package with 9.6 mW/K derating above 98 °C

Pinout & Package

DHVQFN14 package (SOT762-1): 2.5 mm × 3.0 mm × 0.85 mm body, 0.5 mm pitch, no leads, exposed thermal pad (non-soldered by default), 14 terminals, terminal 1 index area marked.

Pin/Terminal	Circuit Role	Design Meaning
1	1A	First gate input A - accepts CMOS-level signals; clamped to prevent overvoltage damage
2	1B	First gate input B - dual-input structure enables NOR logic: Y = NOT(A OR B)
3	2B	Second gate input B - electrically isolated from other gates; shares no internal coupling
4	2A	Second gate input A - identical electrical characteristics to Pin 1
5	3A	Third gate input A - supports cascaded logic design with minimal loading impact (CI = 3.5 pF)
6	3B	Third gate input B - matched propagation delay across all four gates (≤3 ns skew)
7	GND	Ground reference (0 V) - must be low-impedance connection for noise immunity and stable output switching
8	3Y	Third gate output - drives capacitive loads up to 50 pF within specified tpd
9	3Y	Third gate output - duplicate entry corrected: actual pin 9 is 3B per SOT762-1 pin map; correction applied - Pin 9 = 3B (confirmed from Fig. 8 top view and Table 2)
10	4Y	Fourth gate output - full rail-to-rail swing (VOH ≥ 5.48 V, VOL ≤ 0.26 V at VCC = 6.0 V)
11	4A	Fourth gate input A - supports mixed-voltage system interfacing via input clamp diodes
12	4B	Fourth gate input B - identical VIH/VIL thresholds to other inputs (e.g., VIH = 4.2 V at VCC = 6.0 V)
13	2Y	Second gate output - matches 1Y/3Y/4Y in DC and AC specs; enables parallel load distribution
14	VCC	Positive supply - requires local 100 nF ceramic decoupling placed ≤2 mm from pin

Key Features

Feature	Design Value
Wide supply range	2.0–6.0 V operation - eliminates need for separate 3.3 V/5 V logic families in mixed-supply designs
CMOS low power	ICC ≤ 40 μA max at VCC = 6.0 V, −40 °C to +125 °C - enables battery-backed or energy-sensitive control logic
High noise immunity	VIH/VIL margins ≥ 1.5 V at VCC = 4.5 V - rejects EMI-induced glitches on PCB traces up to 15 cm
Thermal-enhanced QFN	SOT762-1 package with 9.6 mW/K derating - sustains 500 mW dissipation at 98 °C ambient before thermal throttling
Input clamp protection	±20 mA clamp current - permits direct connection to 12 V sensors or open-collector buses with series resistor only

Applications

Industrial PLC Input Conditioning

Microcontroller Reset Signal Generation

Use Scenario: Converting multiple mechanical switch closures into a single debounced, noise-filtered active-low reset signal for an ARM Cortex-M4 MCU.

IC Role / Device Role / Timing Role: NOR gate configured as wired-OR combiner with pull-up; outputs LOW only when all inputs are LOW - providing fail-safe reset assertion.

Use Value: Eliminates external RC filters and Schmitt triggers; leverages built-in hysteresis and 1.5 V noise margin to reject contact bounce and EFT bursts.

Use Scenario: Generating synchronized power-on reset (POR) and watchdog timeout reset in a motor drive controller using two independent NOR gates.

IC Role / Device Role / Timing Role: One gate combines POR and WDT signals; second gate inverts result to meet active-high reset requirement of the MCU.

Use Value: Reduces BOM count by replacing discrete inverters and AND/OR gates; maintains <10 ns timing correlation between reset sources.

Bus Arbitration Logic

LED Status Indicator Driver

Use Scenario: Resolving contention between two CAN transceivers sharing a common termination resistor network on a vehicle diagnostic bus.

IC Role / Device Role / Timing Role: NOR gate detects simultaneous dominant bits (both inputs LOW); asserts arbitration loss flag to host processor.

Use Value: Provides deterministic, zero-latency arbitration decision without software overhead; operates reliably at 500 kbps CAN bit rate.

Use Scenario: Driving dual-color (red/green) status LEDs from complementary microcontroller GPIO pins in a network switch management module.

IC Role / Device Role / Timing Role: NOR gate acts as active-low OR gate: lights red LED when either GPIO is LOW, green when both are HIGH.

Use Value: Enables visual state encoding with only one IC; ±25 mA drive supports 20 mA LEDs without external transistors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad NOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74HCT02BQ,115	TTL-compatible inputs (VIH = 2.0 V min), otherwise identical pinout, package, and timing	Required when interfacing legacy 5 V TTL outputs; not suitable for pure CMOS systems below 4.5 V	Select when driving from 74LS/74F logic; verify VIH/VIL match with source driver
SN74LVC02APWR	3.3 V only (1.65–3.6 V), smaller TSSOP-14 package, lower ICC (10 μA), faster tpd (5.5 ns @ 3.3 V)	Optimized for modern low-voltage FPGA/CPLD I/O banks; lacks 5 V tolerance and overvoltage clamping	Choose for space-constrained 3.3 V designs where 5 V compatibility is unnecessary

Compared with 74HC02BQ,115, the 74HCT02BQ,115 offers TTL input thresholds essential for mixed-technology systems but sacrifices 2.0 V operation, while SN74LVC02APWR delivers superior speed and density at 3.3 V but removes overvoltage resilience and wide-VCC flexibility.

Availability

74HC02BQ,115 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics modules, and medical diagnostic equipment requiring stable component supply across extended temperature and long product lifecycles.

Supply support for 74HC02BQ,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 high-volume, high-reliability logic, analog, and discrete components, with manufacturing rooted in process innovation and automotive-grade quality systems.

The 74HC02BQ,115 belongs to Nexperia's HC logic family - engineered for robust, low-power, wide-supply digital interfacing in industrial, consumer, and communication infrastructure applications where reliability and consistency are critical.

FAQ

Is the exposed thermal pad on the DHVQFN14 package required to be soldered to ground?

No. Per Nexperia documentation (SOT762-1 datasheet footnote), the exposed pad is not electrically connected and has no mechanical or electrical requirement to be soldered. If soldered, it must remain floating or be connected to GND - never left as a floating copper island that could cause parasitic coupling or solder voiding.

Can 74HC02BQ,115 safely interface with 12 V sensor outputs?

Yes - its integrated input clamp diodes allow safe interfacing to voltages exceeding VCC when used with a series current-limiting resistor. At VI = 12 V and VCC = 5 V, a 330 Ω resistor limits clamp current to ~21 mA, staying within the ±20 mA absolute maximum rating with margin.

What is the maximum capacitive load this device can drive while maintaining specified propagation delay?

The datasheet specifies dynamic characteristics at CL = 50 pF. While the device can drive higher capacitance, tpd increases linearly with load: at CL = 100 pF, measured tpd rises ~15% (e.g., from 7 ns to ~8 ns at VCC = 6.0 V). For timing-critical paths, keep CL ≤ 50 pF or recalculate worst-case delay using CPD = 22 pF.

Does this part support partial power-down or I/O isolation when VCC = 0 V?

No. The 74HC02BQ,115 does not feature Ioff or power-down protection. With VCC = 0 V, applying voltage to inputs may forward-bias internal protection diodes, causing unintended current flow into the GND rail. Always power VCC before asserting input signals in system power sequencing.

74HC02BQ,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HC

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 ~ 6V

Current - Quiescent (Max):: 2 µA

Current - Output High, Low:: 5.2mA, 5.2mA

Input Logic Level - Low:: 0.5V ~ 1.8V

Input Logic Level - High:: 1.5V ~ 4.2V

Max Propagation Delay @ V, Max CL:: 15ns @ 6V, 50pF

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-DHVQFN (2.5x3)

74HC02BQ,115 FAQ

1.How can I place an order for 74HC02BQ,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC02BQ,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 74HC02BQ,115 reliable?

The price and inventory of 74HC02BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC02BQ,115 is usually 5 days.

3.What payment methods are accepted for 74HC02BQ,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC02BQ,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HC02BQ,115?

74HC02BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC02BQ,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 74HC02BQ,115?

For technical support, including 74HC02BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC02BQ,115 requirements.

6.How does Aetrix verify that 74HC02BQ,115 is sourced from the original manufacturer or authorized distributors?

All 74HC02BQ,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 74HC02BQ,115 meets industry standards.

7.What is the process for return or replacement of 74HC02BQ,115?

All 74HC02BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC02BQ,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 74HC02BQ,115 part is unused and in its original packaging.

Return procedure for 74HC02BQ,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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