Encyclopedia Entry: 74AC86MTC

Product Overview

Category

The 74AC86MTC belongs to the category of integrated circuits (ICs), specifically digital logic gates.

Use

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

Characteristics

• The 74AC86MTC is a quad 2-input XOR gate.
• It operates on a supply voltage range of 2V to 6V.
• It offers high-speed operation and low power consumption.
• This IC has Schmitt-trigger inputs, which provide hysteresis for improved noise immunity.
• It is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels.

Package and Quantity

The 74AC86MTC is available in a small outline surface mount package (TSSOP-14). It is typically 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
• Propagation Delay Time: 4.5ns (max) at 5V supply voltage
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The 74AC86MTC has a total of 14 pins, arranged as follows:

+---+--+---+ A1 -- |1 14| -- VCC B1 -- |2 13| -- A4 Y1 -- |3 12| -- B4 A2 -- |4 11| -- Y4 B2 -- |5 10| -- GND Y2 -- |6 9| -- A3 A1 -- |7 8| -- B3 +---+--+---+

Functional Features

• The 74AC86MTC consists of four independent XOR gates.
• Each gate has two inputs (A and B) and one output (Y).
• It performs the XOR function, which outputs a high signal when the number of high inputs is odd.
• The Schmitt-trigger inputs provide improved noise immunity by ensuring a clean transition between logic levels.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient processing of digital signals. - Low power consumption makes it suitable for battery-powered devices. - Compatibility with both TTL and CMOS logic levels enables easy integration into various systems. - Schmitt-trigger inputs enhance noise immunity, reducing errors in signal processing.

Disadvantages: - Limited to performing XOR operations, limiting its functionality compared to more versatile ICs. - Availability in surface mount packages may require additional equipment or expertise for soldering.

Working Principles

The 74AC86MTC operates based on the principles of digital logic. The XOR gate compares the input signals and produces an output that is high only when the number of high inputs is odd. This is achieved through a combination of transistors and resistors within the IC.

Application Field Plans

The 74AC86MTC finds applications in various digital systems, including: - Data encryption and decryption circuits - Error detection and correction circuits - Arithmetic circuits - Communication systems - Control systems

Alternative Models

Other alternative models that offer similar functionality to the 74AC86MTC include: - 74HC86: A CMOS version of the XOR gate with similar characteristics. - CD4070: A quad 2-input XOR gate in a different package format (DIP-14). - SN74LS86: A TTL version of the XOR gate with slightly different specifications.

In conclusion, the 74AC86MTC is a quad 2-input XOR gate IC that offers high-speed operation, low power consumption, and compatibility with both TTL and CMOS logic levels. Its Schmitt-trigger inputs enhance noise immunity, making it suitable for various digital applications. Alternative models such as the 74HC86, CD4070, and SN74LS86 provide similar functionality.