Description
IC 74266 Quad 2-input XNOR gate
The 74266 is open collector outputs EX-NOR gate. 74266 contains Four independent EX-NOR gates in one package. The EX-NOR (exclusive-NOR) gate is a combination XOR gate followed by an inverter. Its output is “true” if the inputs are the same, and”false” if the inputs are different.( Click for wide range of Logic Gates at solicstores.in).
Pin Configuration
| Pin Number | Pin Name | Description |
| 3 | Output pin (1) | Output pin of Gate – 1 |
| 1,2 | Input pin (1) | Input pins of Gate -1 |
| 7 | Ground | Connect to the ground of the circuit. |
| 4 | Output pin (2) | Output pin of Gate – 2 |
| 5,6 | Input pin (2) | Input pins of Gate -2 |
| 8,9 | Input pin (3) | Input pins of Gate -3 |
| 10 | Output pin (3) | Output pin of Gate -3 |
| 11 | Output pin (4) | Output pin of Gate -4 |
| 12,13 | Input pin (4) | Input pins of Gate -4 |
| 14 | Vcc (Vdd) | Used to power the IC. Typically +5V is used |
2-Input X-NOR Gate Truth Table:
Output acts based on the truth table which is given below. Let us consider the X-NOR logic with two inputs A, B and the output as Y. The output (Y) of the X-NOR gate is 1 when both inputs (A, B) are the same and is 0 when both the inputs are different.
| Input A | Input B | Output Y |
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
Features:
- Two Input Exclusive-NOR Gate – Quad Package
- Typical Operating Voltage: 5V
- Propagation Delay @5V: 32ns (maximum)
- Transition Time: 19ns
- Operating Temperature: -40 to +125°C
- Available in 14-pin PDIP, GDIP, PDSO packages
Applications:
- Logic Buffer circuit
- Basic Logic Circuits
- Parity Checker
- Controlled Inverter
- Digital Comparator
- Networking and Digital Systems
Package Includes :
1 x IC 74266 Quad 2-input XNOR gate
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