Dual UART IC, 2 Channels, 3-Byte FIFO, 40-PDIP
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The XR88C681P/40 is a dual Universal Asynchronous Receiver/Transmitter (UART) integrated circuit manufactured by EXAR. This device provides two independent channels for serial communication. Data handling is facilitated by a 3-byte First-In, First-Out (FIFO) buffer on each channel. The component is housed in a 40-pin Plastic Dual In-Line Package (PDIP).
This dual UART is commonly used in systems requiring multiple serial communication interfaces. Its two channels allow for simultaneous data transmission and reception. The integrated FIFO buffers enhance data integrity and reduce processor overhead.