NOR Gate 7402 IC
The 7402 NOR Gate IC is a fundamental digital logic component, offering four independent 2-input NOR gates in one integrated circuit. It belongs to the 7400 TTL family, known for stable operation, fast switching, and wide use in logic design systems.
Each gate within the IC performs the logical NOR function—an output HIGH only when both inputs are LOW. This makes the 7402 a key element in creating custom logic operations, combinational circuits, or as part of a broader digital control system.
Thanks to its TTL-compatible input/output levels, this IC seamlessly integrates with microcontrollers, sensors, and other 74-series logic chips. It is suitable for both hobby-level projects and professional embedded system designs.
🛠 Technical Specifications
| Parameter | Details |
|---|---|
| Logic Function | Quad 2-Input NOR Gate |
| Number of Gates | 4 |
| Logic Family | 7400 Series (TTL) |
| Voltage Supply Range | 4.75V – 5.25V |
| Typical Propagation Delay | 10ns – 20ns (depending on load) |
| Output Current | -0.4 mA (High), 8 mA (Low) |
| Package | DIP-14 (Through-hole) |
| Operating Temperature | 0°C to +70°C (Standard) |
| Compatible With | TTL Logic, Microcontrollers |
💡 Use Cases & Applications
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✅ Basic Digital Logic Design – For students, trainers, and engineers.
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✅ Condition-based Triggers – Trigger outputs only when all inputs are inactive.
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✅ Sensor Logic – Combine multiple LOW input conditions to activate alerts or controls.
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✅ Control Circuitry – For switching, timing, and automation logic.
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✅ Embedded Hardware Integration – Interface with microcontrollers like PIC or Atmel.
🛠️ Pair With
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🔌 IC’s – Explore logic gates, microcontrollers, and regulators.
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⚡ Power Supply Modules – Get regulated 5V power.
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🔧 Tools & Accessories – For soldering, testing, and assembly.
🎥 YouTube Tutorial
📺 Watch NOR Logic in Action:
👉 7402 NOR Gate Circuit Demo on YouTube
⚠️ Precautions
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Ensure stable 5V supply; avoid voltage spikes.
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Never leave inputs floating—tie unused inputs LOW.
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Add 0.1μF ceramic capacitors near power pins for noise suppression.
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Don’t exceed maximum input/output current specs to avoid damage.
🛒 Summary
The 7402 Quad 2-Input NOR Gate IC is a must-have for digital designers and embedded system engineers. Whether you’re working on an automation project, logic trainer kit, or microcontroller interface, the 7402 provides stable performance and easy integration.
👉 Buy now from Electroway – your trusted source for high-quality electronics.
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