D8251A Programmable Communication Interface DIP-28

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D8251A Programmable Communication Interface DIP-28 The D8251A is a programmable communication interface (USART) designed to handle both synchronous and asynchronous serial data communication in microprocessor-based systems. It acts as a bridge between parallel data buses and serial communication lines, offering flexible configuration for data format, baud rate, parity, and stop bits. Packaged in a standard DIP-28, the D8251A is widely used with classic microprocessors such as 8080, 8085, and 8086 families. Its built-in transmitter and receiver, along with programmable control registers, make it ideal for reliable serial communication in embedded, industrial, and legacy computing applications. Features Supports both asynchronous and synchronous communication modes. Programmable baud rate, character length, parity, and stop bits. Full-duplex operation with independent transmitter and receiver. Compatible with Intel 8080/8085/8086 microprocessor systems. Internal control and status registers for flexible configuration. Error detection including parity, overrun, and framing errors. Standard DIP-28 package for through-hole mounting. PINOUT Specifications Specification Value Package DIP-28 Data Rate 64KBd Maximum Input Current 100mA Number of Channels per Chip 1 Family 8251A Transmitter and Receiver FIFO Counter No Minimum Input Voltage 4.5V Input Voltage 5V Maximum Input Voltage 5.5V Minimum Operating Temperature 0°C Maximum Operating Temperature 70°C Mounting Through Hole Pins 28 Product Type USART Documents Datasheet 8251A