4077 IC Quad 2-Input Exclusive-NOR Gate
The CD4077BE is a quad exclusive-NOR gate IC built using CMOS technology, offering high noise immunity and low power consumption. This logic IC contains four independent XNOR (Exclusive-NOR) gates, each performing the logic function of equality detection between two inputs. It outputs HIGH only when both inputs are the same, making it ideal for logic comparison, equality checking, and parity functions.
Engineers and educators use the CD4077BE in various digital logic circuits, including arithmetic logic units, data comparators, and error detection systems. It operates across a wide voltage range of 3V to 15V and is pin-compatible with standard TTL devices, making it perfect for integration into TTL-CMOS hybrid designs.
Key Features
Contains four 2-input Exclusive-NOR gates
Performs logic equality checking (XNOR function)
High noise immunity for stable performance
Wide supply voltage range: 3V to 15V
Compatible with TTL and CMOS logic levels
Low power consumption
Available in DIP-14 package
Suitable for parity checking and logic comparators
Product Specifications
| Specification | Value |
|---|---|
| Professional Name | CD4077BE |
| IC Type | Quad 2-Input Exclusive-NOR Gate |
| Logic Family | CMOS |
| Number of Gates | 4 |
| Number of Inputs per Gate | 2 ‘ |
| Function | Equality Logic (XNOR) |
| Supply Voltage Range | 3V to 15V |
| Output Type | Buffered |
| Propagation Delay | ~60ns at 10V |
| Package Type | DIP-14 |
| Temperature Range | -55°C to +125°C |
Pin Configuration (DIP-14)
| Pin No. | Name | Description |
|---|---|---|
| 1 | A1 | Input A of Gate 1 |
| 2 | B1 | Input B of Gate 1 |
| 3 | Y1 | Output of Gate 1 (A1 XNOR B1) |
| 4 | A2 | Input A of Gate 2 |
| 5 | B2 | Input B of Gate 2 |
| 6 | Y2 | Output of Gate 2 (A2 XNOR B2) |
| 7 | GND | Ground |
| 8 | Y3 | Output of Gate 3 (A3 XNOR B3) |
| 9 | A3 | Input A of Gate 3 |
| 10 | B3 | Input B of Gate 3 |
| 11 | Y4 | Output of Gate 4 (A4 XNOR B4) |
| 12 | A4 | Input A of Gate 4 |
| 13 | B4 | Input B of Gate 4 |
| 14 | VDD | Positive Supply Voltage |
Applications
Logic comparators
Parity checkers and generators
Digital data integrity testing
Error detection systems
Arithmetic and logic units
Educational logic circuit kits
