74266 Quad 2-Input Exclusive-NOR Gates 5V 8mA DIP-14
The 74266 is a quad 2-input Exclusive-NOR (XNOR) logic gate integrated circuit containing four independent gates in a single package. Each gate compares two digital input signals and produces a HIGH output when both inputs have the same logic state. The output becomes LOW when the inputs differ, making the IC useful for digital comparison and equality detection applications.
This IC features open-collector outputs, which require external pull-up resistors to produce a valid HIGH logic level. The open-collector configuration also allows outputs to be connected in suitable wired logic arrangements. Supplied in a 14-pin dual in-line package (DIP-14), it is suitable for through-hole PCB assembly, digital logic experiments, educational projects, and general-purpose logic circuits.
Features:
- Four independent 2-input XNOR gates.
- Performs digital equivalence logic.
- Open-collector output configuration.
- Supports wired logic applications with appropriate connections.
- Through-hole DIP package.
- Compatible with standard TTL logic circuits.
- Suitable for digital signal comparison.
Specifications:
| Physical | |
| Case/Package | PDIP |
| Contact Plating | Gold |
| Mount | Through Hole |
| Number of Pins | 14 |
| Technical | |
| High-Level Output Current | -100 µA |
| Logic Function | XNOR |
| Low-Level Output Current | 8 mA |
| Max Operating Temperature | 70 °C |
| Max Output Current | 8 mA |
| Max Supply Voltage | 5.25 V |
| Min Operating Temperature | 0 °C |
| Min Supply Voltage | 4.75 V |
| Number of Bits | 4 |
| Number of Channels | 4 |
| Number of Circuits | 4 |
| Number of Elements | 4 |
| Number of Gates | 4 |
| Number of Input Lines | 2 |
| Number of Inputs | 2 |
| Number of Output Lines | 1 |
| Number of Outputs | 1 |
| Operating Supply Voltage | 5 V |
| Output Current | 8 mA |
| Propagation Delay | 30 ns |
| Quiescent Current | 8 mA |
| Termination | Through Hole |
| Turn-On Delay Time | 30 ns |
Pinout:
| Pin # | Type | Description |
|---|---|---|
| 1 | Input | Input to the first XNOR gate. |
| 2 | Input | Input to the first XNOR gate. |
| 3 | Output | Open-collector output from the first XNOR gate. |
| 4 | Input | Input to the second XNOR gate. |
| 5 | Input | Input to the second XNOR gate. |
| 6 | Output | Open-collector output from the second XNOR gate. |
| 7 | Power | Connect to ground (GND). |
| 8 | Output | Open-collector output from the third XNOR gate. |
| 9 | Input | Input to the third XNOR gate. |
| 10 | Input | Input to the third XNOR gate. |
| 11 | Output | Open-collector output from the fourth XNOR gate. |
| 12 | Input | Input to the fourth XNOR gate. |
| 13 | Input | Input to the fourth XNOR gate. |
| 14 | Power | Positive power supply (VCC). Connect to +5V power. |
Applications:
- Digital equality comparators.
- Bit comparison circuits.
- Digital logic systems.
- Parity and error-detection circuits.
- Wired logic applications.
- Control and switching logic.
- Educational digital electronics projects.
- TTL-based electronic circuits.
Packages Included:
- 1 × 74266 Quad 2-Input Exclusive-NOR Gates 5V 8mA DIP-14.
