Logic Gate XOR 74HC86
The 74HC86 XOR (Exclusive OR) Logic Gate is a powerful and essential integrated circuit (IC) that plays a significant role in digital logic circuits. Its main function is to execute the XOR operation, providing a HIGH output only when the number of HIGH inputs is odd. This versatile IC is designed to support a wide range of applications in digital systems. The 7486 Quad 2-input Exclusive-OR CMOS Gate IC includes four independent XOR gates, each with two inputs, offering efficient XOR operations for various digital circuits. This IC is an excellent choice for engineers, hobbyists, and educators seeking to enhance their digital logic designs.
Package Includes:
1 x 74HC86 XOR (Exclusive OR) Logic Gate
Features:
Exclusive OR Operation: The 74HC86 performs the exclusive OR operation, a core logic function used in many digital circuits for decision-making and data processing.
Four Independent Gates: The IC houses four individual XOR gates in a single package, enabling multiple XOR operations in a compact form factor.
High-Speed Performance: Built with advanced semiconductor technology, the 74HC86 ensures efficient and rapid digital computations.
Wide Voltage Range: It operates within a broad voltage range, making it suitable for various digital applications.
Input and Output Compatibility: The IC is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels, ensuring seamless integration with other digital components.
CMOS Technology: Constructed using CMOS technology, the IC delivers high-speed performance with low power consumption.
Low Power Consumption: The 74HC86 is designed to be energy-efficient, consuming minimal power during operation.
Versatile Applications: This XOR gate is used in arithmetic circuits, data processing, encryption algorithms, error detection, and more.
Reliable Performance: The IC delivers accurate and stable outputs, ensuring the correctness and reliability of digital operations.
Description: The 74HC86 XOR (Exclusive OR) Logic Gate is designed to perform the XOR operation, a fundamental binary logic function. The XOR gate outputs a HIGH signal when the number of HIGH inputs is odd, and a LOW signal when the number of HIGH inputs is even. This IC contains four 2-input XOR gates, allowing for multiple XOR operations simultaneously. Built with CMOS technology, the IC offers high-speed performance and low power consumption. Its wide voltage range and compatibility with TTL and CMOS logic levels make it suitable for a variety of applications.
Common applications of this IC include digital circuits, arithmetic circuits, error detection, cryptography, and more. It is also a valuable tool in educational settings, allowing students to learn about digital logic principles and circuit design. Engineers and hobbyists can utilize the 74HC86 to create innovative digital systems with reliable XOR operations.
Principle of Work: The 74HC86 XOR (Exclusive OR) Logic Gate operates by combining multiplication, addition, and inversion of inputs. The Boolean expression for the output is A.B̅ + A̅.B or (A + B).(A̅ + B̅), also represented as (A XOR B) or (A ⊕ B). The XOR gate produces an output of 1 when the inputs A and B are different and 0 when they are the same. This output behavior can be summarized as follows:
Truth Table:
| A | B | Z |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
Pinout of the Module:
Input Pin 1 (A1): First input for the first XOR gate.
Input Pin 2 (B1): Second input for the first XOR gate.
Output Pin 1 (Y1): Output for the first XOR gate.
Input Pin 3 (A2): First input for the second XOR gate.
Input Pin 4 (B2): Second input for the second XOR gate.
Output Pin 2 (Y2): Output for the second XOR gate.
GND (Ground): Ground connection.
Input Pin 5 (A3): First input for the third XOR gate.
Input Pin 6 (B3): Second input for the third XOR gate.
Output Pin 3 (Y3): Output for the third XOR gate.
Input Pin 7 (A4): First input for the fourth XOR gate.
Input Pin 8 (B4): Second input for the fourth XOR gate.
Output Pin 4 (Y4): Output for the fourth XOR gate.
VCC: Positive power supply pin.
Applications:
Digital Arithmetic: Used in adders and subtractors.
Data Processing: For data comparison, validation, and error detection.
Error Detection: Key in checksum generation and error correction.
Encryption and Decryption: Utilized in cryptographic algorithms.
Digital Communications: In data encoding and decoding.
Switching Circuits: Used in flip-flops and multiplexers.
Parity Bit Generation: Employed in communication and storage systems.
Frequency Division: In counters and dividers.
Electronic Locks: Used for secure access control.
Signal Processing: In digital filters and waveform generation.
Logic Level Conversion: For different voltage standards.
Robotics and Automation: In control and automation circuits.
Data Transmission: Used in Manchester encoding and decoding.
Comparators: In digital signal comparison.
Sensor Interface: For signal processing and threshold detection.
Technical Details:
Supply Voltage: 2V to 6V
Logic Family: HC (High-Speed CMOS)
Number of Gates: 4 XOR gates
Number of Inputs per Gate: 2 (A and B)
Number of Outputs per Gate: 1 (Y)
Propagation Delay: Typically 6.5 ns at 5V and 25°C
Power Dissipation: Low power consumption
Package Type: DIP and SOIC options
Temperature Range: -40°C to 85°C
Pin Configuration: 14 pins for four XOR gates
Compatibility: Works with TTL and CMOS logic levels
Comparisons with 74LS86:
Logic Family: 74HC86 is part of the HC (High-Speed CMOS) family, while 74LS86 belongs to the LS (Low-Power Schottky TTL) family.
Speed: 74HC86 offers higher speed with lower propagation delay compared to the 74LS86.
Power Consumption: The 74HC86 uses less power due to its CMOS technology.
Voltage Compatibility: 74HC86 supports a wider voltage range (2V-6V), while 74LS86 is typically used with 5V logic.