DM74AS286N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Function
• Characteristics: High-Speed, 9-Bit Parity Generator/Checker
• Package: DIP (Dual In-line Package)
• Essence: The DM74AS286N is a high-speed integrated circuit that performs the function of a 9-bit parity generator/checker. It is commonly used in digital systems to ensure data integrity by generating or checking parity bits.
• Packaging/Quantity: The DM74AS286N is typically packaged in a DIP package and is available in various quantities.

Specifications

The DM74AS286N has the following specifications:

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -55°C to +125°C
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Propagation Delay: 12ns (max)
• Power Dissipation: 500mW (max)

Detailed Pin Configuration

The DM74AS286N has a total of 14 pins, each serving a specific purpose. The pin configuration is as follows:

1. GND (Ground)
2. A0 (Data Input Bit 0)
3. A1 (Data Input Bit 1)
4. A2 (Data Input Bit 2)
5. A3 (Data Input Bit 3)
6. A4 (Data Input Bit 4)
7. A5 (Data Input Bit 5)
8. A6 (Data Input Bit 6)
9. A7 (Data Input Bit 7)
10. A8 (Data Input Bit 8)
11. P (Parity Output)
12. C (Carry Output)
13. G2 (Enable Input)
14. VCC (Supply Voltage)

Functional Features

The DM74AS286N offers the following functional features:

• Parity Generation: The IC can generate a parity bit based on the input data bits.
• Parity Checking: It can check the parity of the input data bits and provide an output indicating whether the parity is correct or not.
• Carry Output: The carry output indicates whether an overflow occurred during the parity generation/checking process.
• High-Speed Operation: The IC operates at high speeds, making it suitable for time-critical applications.

Advantages and Disadvantages

Advantages of using the DM74AS286N include:

• High-speed operation
• Compact DIP package
• Reliable parity generation/checking

Disadvantages of the DM74AS286N include:

• Limited to 9-bit parity generation/checking
• Requires external enable signal for operation

Working Principles

The DM74AS286N works by taking the input data bits and performing a parity calculation. It generates a parity bit based on the input data bits and provides an output indicating whether the parity is correct or not. The carry output indicates whether an overflow occurred during the parity generation/checking process.

Detailed Application Field Plans

The DM74AS286N finds applications in various digital systems where data integrity is crucial. Some of the detailed application field plans include:

1. Data Communication Systems: Used to ensure error-free transmission of data over communication channels.
2. Memory Systems: Employed to detect and correct errors in stored data.
3. Computer Networks: Utilized to maintain data integrity during transmission across network nodes.
4. Error Detection and Correction Systems: Integrated into systems that require reliable data processing.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the DM74AS286N. Some of the popular alternatives include:

1. SN74LS280: 9-Bit Parity Generator/Checker with similar specifications.
2. CD4016BE: Quad Bilateral Switch with different functionality but compatible package and pin configuration.
3. MC14081B: Quad 2-Input AND Gate with different functionality but compatible package and pin configuration.

These alternative models can be considered based on specific requirements and compatibility with the existing system.

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