Encyclopedia Entry: 74AC86SJ

Product Overview

Category

The 74AC86SJ belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital logic gates.

Use

This product is primarily used in digital electronics for performing logical operations, specifically the XOR (exclusive OR) function.

Characteristics

• The 74AC86SJ is a quad 2-input XOR gate.
• It operates on a supply voltage range of 2V to 6V.
• This IC has high-speed operation and low power consumption.
• It offers improved noise immunity compared to its predecessors.
• The 74AC86SJ is compatible with both TTL and CMOS logic levels.

Package and Quantity

The 74AC86SJ is available in a standard 14-pin plastic dual in-line package (DIP). It is commonly sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage High (VIH): 2V to VCC + 0.5V
• Input Voltage Low (VIL): -0.5V to 0.8V
• Output Voltage High (VOH): VCC - 0.5V
• Output Voltage Low (VOL): 0.5V
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The 74AC86SJ has a total of 14 pins, each serving a specific purpose. The pin configuration is as follows:

__ __ A1| \__/ |14 VCC B1| |13 A4 A2| |12 B4 B2| |11 Y4 A3| |10 A3 B3| |9 B3 Y3| |8 Y3 GND|____ ____|7 GND __ __ A4| \__/ |6 A1 B4| |5 B1 Y4| |4 Y1 A3| |3 A2 B3| |2 B2 Y3|_________|1 Y2

Functional Features

The 74AC86SJ offers the following functional features:

• Quad 2-input XOR gates: It contains four independent XOR gates, each with two input pins and one output pin.
• High-speed operation: The IC is designed for fast logic operations, making it suitable for applications requiring quick response times.
• Low power consumption: The 74AC86SJ is optimized for low power usage, making it energy-efficient.
• Improved noise immunity: This IC has enhanced noise rejection capabilities, ensuring reliable operation even in noisy environments.
• Compatibility: It can work seamlessly with both TTL and CMOS logic levels, providing flexibility in various digital circuit designs.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient processing of logical operations.
• Low power consumption contributes to energy efficiency.
• Improved noise immunity ensures reliable performance in noisy environments.
• Compatibility with TTL and CMOS logic levels allows for versatile integration into different circuit designs.

Disadvantages

• Limited to performing XOR operations only, limiting its functionality compared to more versatile logic gate ICs.
• Availability may vary depending on the supplier and market demand.

Working Principles

The 74AC86SJ operates based on the principles of digital logic. It performs the XOR function, which outputs a high signal (logic 1) when the number of high inputs is odd, and a low signal (logic 0) when the number of high inputs is even. The internal circuitry of the IC utilizes transistors and logic gates to achieve this functionality.

Application Field Plans

The 74AC86SJ finds applications in various digital electronic systems, including but not limited to:

1. Data encryption: XOR gates are commonly used in cryptographic algorithms for data encryption and decryption.
2. Error detection and correction: The XOR function is utilized in error detection and correction codes, such as parity check.
3. Arithmetic circuits: XOR gates are essential components in arithmetic circuits, such as adders and subtractors.
4. Communication systems: The IC can be employed in communication systems for signal processing and modulation/demodulation operations.
5. Control systems: XOR gates play a role in control systems for logical decision-making and signal routing.

Alternative Models

There are several alternative models available that offer similar functionality to the 74AC86SJ. Some notable alternatives include:

• 74HC86: This IC operates at a higher voltage range (2V to 6V) and is compatible with CMOS logic levels.
• CD4086: A CMOS-based quad 2-input XOR gate with a wider supply voltage