The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS86 contains four independent 2-input Exclusive-OR gates. They perform the Boolean functions Y = A ⊕ B = A’B + AB’ in positive logic.
74LS86 Features
- Four Independent EXCLUSIVE-OR Gates
- Standard Pin Arrangement
- Fast Switching Times
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS86 Specifications
| Supply Voltage | 4.75 – 5.25Vdc |
| Maximum Clock Frequency | 40Mhz |
| Power Dissipation | 2mW/gate @100kHz |
| Minimum Output Current | 8mA |
| Propagation Delay | 10nS |
| Fan Out (TTL Loads) | 20 |
74LS86 Pinout Diagram
74LS86 Pin Description
| Pin No | Pin Name | Description |
| 1 | A1 | Input A Of Exclusive OR Gate 1 |
| 2 | B1 | Input B Of Exclusive OR Gate 1 |
| 3 | Y1 | The output of Exclusive OR Gate 1 |
| 4 | A2 | Input A Of Exclusive OR Gate 2 |
| 5 | B2 | Input B Of Exclusive OR Gate 2 |
| 6 | Y2 | The output of Exclusive OR Gate 2 |
| 7 | GND | Ground |
| 8 | Y3 | The output of Exclusive OR Gate 3 |
| 9 | A3 | Input A Of Exclusive OR Gate 3 |
| 10 | B3 | Input B Of Exclusive OR Gate 3 |
| 11 | Y4 | The output of Exclusive OR Gate 4 |
| 12 | A4 | Input A Of Exclusive OR Gate 4 |
| 13 | B4 | Input B Of Exclusive OR Gate 4 |
| 14 | VCC | Positive Supply |
74LS86 Circuit
Here is a simple circuit of EXOR using Logic Gate (NOT, AND, and OR).
Applications
- Arithmetic Operations
- Parity Checker
- Controlled Inverter
- Binary to Gray / Gray to Binary Conversion
- Combinational Logic Circuit Minimization
- Digital Comparator
74LS86 Alternative Equivalent
74LS136
Download 74LS86 Quad EXCLUSIVE-OR Gate Datasheet from the link given below.
