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Home » NEWEST Products » New by Manufacturer » Exar » Exar XR16C850 UART With 128-Byte FIFO
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Exar XR16C850 UART With 128-Byte FIFO

Exar's XR16C850 is a Universal Asynchronous Receiver and Transmitter (UART) with 128-byte FIFO. The XR16C850 supports Intel and PC mode data bus interface and is software compatible to industry standard 16C450, 16C550, ST16C580 and ST16C650A UARTs. Exar's XR16C850 UART has 128 bytes of TX and RX FIFOs and is capable of operating up to a serial data rate of 2Mbps. Features for the XR16C850 include programmable TX/RX FIFO trigger levels, automatic hardware/software flow control, auto RS-485 half duplex direction support, programmable Xon/Xoff characters, infrared (IrDA) TX and RX encoder/decoder and sleep mode (100µA stand-by).


Added features in devices with top mark date code of "F2 YYWW" and newer:
  • 5 volt tolerant inputs
  • 0 ns address hold time (TAH)
Features available for all devices
  • 2.97 to 5.5 volt operation
  • Pin to pin compatible to ST16C550, ST16C580, ST16C650A and TL16C750
  • 128-byte Transmit and Receive FIFOs
  • Transmit/Receive FIFO Counters
  • Programmable TX/RX FIFO Trigger Levels
  • Automatic Hardware/Software Flow Control
  • Auto RS-485 half duplex direction support
  • Programmable Xon/Xoff characters
  • Infrared (IrDA) TX and RX Encoder/Decoder
  • Sleep Mode (100 uA stand-by)
  • Battery Operated Electronics
  • Internet Appliances
  • Handheld Terminal
  • Personal Digital Assistants
  • Cellular Phones DataPort
  • Wireless Infrared Data Communications Systems
Part Number Package Operating
XR16C850CM-F TQFP-48 0 to 70°C
XR16C850IM-F TQFP-48 -40 to +85°C
Block Diagram
  • Exar
  • Semiconductors|Integrated Circuits|IC-Interface