4002 IC Dual 4-Input NOR Gate CMOS
The CD4002BE or IC 4002 is a CMOS logic gate IC that contains two independent 4-input NOR gates. It is a widely used chip in digital logic design, providing essential NOR logic functionality in a single compact package. Built on CMOS technology, the IC operates over a wide voltage range (3V to 15V), making it suitable for both TTL and CMOS logic level interfacing.
This IC is a foundational component in digital circuit design. The NOR gate, being a universal logic gate, can be used to implement any Boolean function, making the CD4002BE highly versatile. It is widely applied in digital control systems, oscillators, logic combinational designs, and even microcontroller interfacing tasks.
Key Features
Contains two 4-input NOR gates in one IC
Built with CMOS logic technology
Wide supply voltage: 3V to 15V
High noise immunity
Low static power consumption
Compatible with both CMOS and TTL logic
DIP-14 package for through-hole applications
Fast switching for digital systems
Pin Configuration (CD4002BE)
| Pin No. | Name | Function Description |
|---|---|---|
| 1 | A1 | Input A of NOR Gate 1 |
| 2 | B1 | Input B of NOR Gate 1 |
| 3 | C1 | Input C of NOR Gate 1 |
| 4 | D1 | Input D of NOR Gate 1 |
| 5 | Y1 | Output of NOR Gate 1 |
| 6 | NC | Not connected |
| 7 | GND | Ground |
| 8 | Y2 | Output of NOR Gate 2 |
| 9 | D2 | Input D of NOR Gate 2 |
| 10 | C2 | Input C of NOR Gate 2 |
| 11 | B2 | Input B of NOR Gate 2 |
| 12 | A2 | Input A of NOR Gate 2 |
| 13 | NC | Not connected |
| 14 | Vcc | Positive power supply |
Product Specifications Table
| Specification | Details |
|---|---|
| Full Name | CD4002BE Dual 4-Input NOR Gate |
| Logic Family | CMOS |
| Number of Gates | 2 |
| Input Count per Gate | 4 |
| Output Type | NOR logic |
| Package Type | DIP-14 |
| Operating Voltage | 3V – 15V ‘ |
| Operating Temperature | -55°C to +125°C |
| Logic Compatibility | TTL & CMOS |
| Mounting Type | Through-Hole |
Applications
Building digital logic circuits
Logic training kits and academic labs
Microcontroller I/O expansion
Control logic design
Oscillator and timer circuits
Any universal gate-based system
Prototyping and hardware development
