SN7486 Quad 2-Input XOR Logic Gate IC – DIP-14
The SN7486 is a quad 2-input Exclusive-OR (XOR) logic gate integrated circuit from the 7400-series TTL logic family. It contains four independent XOR gates, each designed to perform a digital logic operation on two binary inputs.
An XOR gate produces a HIGH output (logic 1) when its two inputs are different and a LOW output (logic 0) when both inputs are the same.
The SN7486 is commonly used in digital electronics, binary arithmetic circuits, logic control systems, signal comparison, and educational electronics projects.
Key Features
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Four Independent XOR Gates: Contains four 2-input XOR logic gates in one IC.
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TTL Logic: Designed for standard 5V digital circuits.
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Exclusive-OR Operation: Output is HIGH when the two inputs differ.
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Combinational Logic: Operates without an external clock signal.
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Independent Gate Operation: Each XOR gate can be used separately.
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DIP-14 Package: Suitable for breadboards and through-hole PCB assembly.
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Digital Logic Applications: Ideal for arithmetic circuits, signal comparison, and logic experiments.
Technical Specifications
| Parameter |
Specification |
| Part Number |
SN7486 |
| IC Type |
Quad 2-Input XOR Gate |
| Logic Family |
7400 Series TTL |
| Logic Function |
Exclusive-OR (XOR) |
| Number of Gates |
4 |
| Inputs per Gate |
2 |
| Outputs per Gate |
1 |
| Nominal Supply Voltage |
5V DC |
| Operating Voltage |
4.75–5.25V DC |
| Logic Type |
TTL |
| Output Logic |
HIGH when inputs differ |
| Clock Required |
No |
| Package Type |
DIP-14 |
| Number of Pins |
14 |
| Mounting Type |
Through-Hole |
| Operating Temperature |
0°C to +70°C (standard commercial version) |
Pin Configuration
| Pin |
Function |
Description |
| 1 |
1A |
Gate 1 Input A |
| 2 |
1B |
Gate 1 Input B |
| 3 |
1Y |
Gate 1 Output |
| 4 |
2A |
Gate 2 Input A |
| 5 |
2B |
Gate 2 Input B |
| 6 |
2Y |
Gate 2 Output |
| 7 |
GND |
Ground |
| 8 |
3Y |
Gate 3 Output |
| 9 |
3A |
Gate 3 Input A |
| 10 |
3B |
Gate 3 Input B |
| 11 |
4Y |
Gate 4 Output |
| 12 |
4A |
Gate 4 Input A |
| 13 |
4B |
Gate 4 Input B |
| 14 |
VCC |
+5V Power Supply |
XOR Logic Truth Table
| Input A |
Input B |
Output Y |
| 0 |
0 |
0 |
| 0 |
1 |
1 |
| 1 |
0 |
1 |
| 1 |
1 |
0 |
Logic Expression:
Y = A ⊕ B
The output is HIGH only when the two inputs have different logic states.
Connection Example
To operate one XOR gate:
- Connect Pin 14 (VCC) to a regulated +5V DC supply.
- Connect Pin 7 (GND) to ground.
- Connect Input A to Pin 1.
- Connect Input B to Pin 2.
- Read the XOR output from Pin 3.
- Apply different logic combinations to the inputs to observe the output.
The remaining three XOR gates can be used independently in the same circuit.
Applications
- Digital Logic Circuits
- Binary Adders and Arithmetic Circuits
- Parity Generation and Checking
- Digital Signal Comparison
- Logic Control Systems
- Data Processing Circuits
- Educational Electronics Experiments
- Breadboard and PCB Prototyping
Important Notes
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Power Supply: Use a regulated 5V DC supply.
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Logic Compatibility: Designed for TTL logic levels.
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Input Connections: Do not leave unused inputs floating.
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Decoupling: A 100nF capacitor between VCC and GND is recommended.
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Microcontroller Compatibility: Check voltage and logic-level compatibility before connecting to ESP32, Raspberry Pi, or other 3.3V devices.
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Variant Differences: SN7486, SN74LS86, and SN74HC86 provide similar XOR functions but have different electrical characteristics.
Package Includes
