Intel 8251

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Intel C8251

The 8251 Universal Synchronous/Asynchronous Receiver/Transmitter packaged in a 28-pin DIP made by Intel. It is typically used for serial communication and was rated for 19.2 Kbits per second signalling rate.

It is commonly confused with the much more common 8250 UART that was made popular as the serial port in the IBM Personal Computer.

It includes 5 sections

  1. read/write control logic
  2. transmitter
  3. receiver
  4. data bus system
  5. modem control

External links and references[edit]

  • Mikrocomputer Bausteine, Datenbuch 1979/80, Band 3, Peripherie, Siemens AG, Bestellnummer B 2049, pp. 64–101.
  • NEC Electronics (Europe) GmbH, 1982 Catalog, pp. 631–648.