XR88C681CP/40 Dual UART Interface IC 1Mbps 40-PDIP

The XR88C681CP/40 is a CMOS Dual Universal Asynchronous Receiver and Transmitter (DUART) designed by Exar Corporation (now part of MaxLinear). This device provides two fully independent full-duplex asynchronous communication channels, making it ideal for microprocessor-based systems requiring serial communication.​

Key Features:

• Dual full-duplex asynchronous communication channels
• Quad-buffered receivers and dual-buffered transmitters
• Internal bit rate generators with over 23 selectable rates
• Supports external clock inputs and programmable stop bits
• Integrated 16-bit counter/timer and interrupt control
• Compatible with multiple microprocessor families​

Additional Specifications:

• Interface Type: Dual UART