4025 IC Triple 3-Input NOR Gate
The CD4025BE is a triple 3-input NOR gate IC that contains three independent logic gates, each performing the NOR operation on three inputs. This IC is part of the CMOS 4000 series and offers high noise immunity, low power consumption, and wide voltage operation, making it suitable for both hobbyist and industrial logic designs.
Each gate outputs HIGH only when all three of its inputs are LOW, enabling logical conditions to be tested across multiple input combinations. Engineers often use this IC for combinational logic circuits, alarm systems, timing control, and other digital applications requiring multiple NOR functions.
Key Features
Contains three independent 3-input NOR gates
High noise immunity and low static power consumption
CMOS logic compatible with TTL inputs
Wide supply voltage range: 3V to 15V
Standard DIP-14 package for easy integration
Ideal for combinational logic and control applications
Pin Configuration (DIP-14)
| Pin | Label | Description |
|---|---|---|
| 1 | A1 | Input A of Gate 1 |
| 2 | B1 | Input B of Gate 1 |
| 3 | C1 | Input C of Gate 1 |
| 4 | Y1 | Output of Gate 1 |
| 5 | A2 | Input A of Gate 2 |
| 6 | B2 | Input B of Gate 2 |
| 7 | GND | Ground ‘ |
| 8 | C2 | Input C of Gate 2 |
| 9 | Y2 | Output of Gate 2 |
| 10 | A3 | Input A of Gate 3 |
| 11 | B3 | Input B of Gate 3 |
| 12 | C3 | Input C of Gate 3 |
| 13 | Y3 | Output of Gate 3 |
| 14 | VDD | Positive Supply Voltage |
Product Specifications
| Parameter | Value |
|---|---|
| IC Type | Triple 3-input NOR Gate |
| Logic Family | CMOS |
| Package Type | DIP-14 |
| Supply Voltage | 3V – 15V |
| Input Compatibility | CMOS and TTL |
| Propagation Delay | ~200 ns at 5V |
| Operating Temperature | -55°C to +125°C |
| Power Dissipation | Very low (static CMOS design) |
Applications
Digital logic control
Signal combination and inversion
Alarm and interlock circuits
Custom logic gate design
Timers and oscillators
DIY electronics and learning kits
