The MD8251A/B is a Programmable Communication Interface (USART - Universal Synchronous/Asynchronous Receiver/Transmitter) manufactured by Intel. This device is designed to provide a flexible and efficient means of interfacing microprocessors with serial communication links. It supports both synchronous and asynchronous communication protocols, making it suitable for a wide range of applications.

Applications

• Serial Communication: Used for serial communication between computers, terminals, and other devices.
• Modems: Employed in modems for converting serial data to and from modulated signals.
• Printers: Utilized in printers for receiving serial data from the host computer.
• Networking Equipment: Found in network devices for serial communication over communication lines.
• Industrial Control Systems: Integrated into industrial control systems for serial communication with sensors, actuators, and other devices.
• Data Acquisition Systems: Used in data acquisition systems for transmitting serial data to a computer.

Features

• Programmable Baud Rate: Allows for flexible baud rate selection to match the communication requirements.
• Synchronous and Asynchronous Operation: Supports both synchronous and asynchronous communication protocols.
• Parity Generation and Checking: Provides parity generation and checking for error detection.
• Full-Duplex Operation: Supports full-duplex communication, allowing simultaneous transmission and reception.
• TTL Compatible Inputs and Outputs: Interfaces easily with standard TTL logic circuits.
• DIP Package: Available in a standard DIP package for easy prototyping and breadboarding.

Benefits

• Versatile Serial Communication: Provides a versatile interface for serial communication applications.
• Flexible Configuration: Programmable baud rate and communication modes allow for flexible configuration.
• Error Detection: Parity generation and checking provide error detection capabilities.
• Efficient Communication: Full-duplex operation allows for efficient communication.
• Simplified System Design: Reduces the complexity of serial communication.
• Easy Integration: TTL compatibility and DIP package simplify integration into existing systems.

Technical Specifications:

Supply Voltage: Consult datasheet for voltage range (typically 5V)

Baud Rate: Programmable

Communication Modes: Synchronous and Asynchronous

Parity: Programmable (Odd, Even, None)

Package Type: DIP

Operating Temperature: Consult datasheet