USB to RS485 / RS422 Converter, PRO

    Model: XS890

€24,00 Ex VAT
€30,00 Inc VAT

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The XS890 is our most popular high quality USB to RS485 / RS422 converter. It is designed around the high quality FT232RL processor from FTDI Semiconductors which in combination with a perfectly designed circuitry and a SP485E serial driver chip from Exar Corporation results in a converter which is compatible with most serial devices and operating systems and has a low error rate.
The drivers for this converter are updated frequently and works with most versions of Windows, Linux and Mac.
After installing the included drivers and connecting the converter to your computer's USB port, a virtual COM port will show up your operating system's Device Manager where you can manage and configure it almost as if it was a real built-in serial COM port.

All COM port settings, such as baud rate and data bits, are automatically adjusted to the serial device you connect to this converter to, however several COM port settings can also be adjusted manually. COM port number can also be manually selected.

This USB to RS485 / RS422 is powered from the computer's USB port so no additional external power supply is required. The RS485 / RS422 interface is a standard 9-pin D-sub connector with an optional screw terminal board included for easy connection of cables or single wires.

Built-in fail-safe bias resistors ensures reliable performance under even the most demanding situations. LED lights for Power, TX and RX indicates when the converter has power and when data is sent or received, which is nice to have when troubleshooting applications.

The converter will work with most applications and environments such as laboratory equipment, office devices, alarm systems, terminals and process machinery. It is however not recommended for heavy duty industrial applications; for this we recommend one of our optically isolated converter.

Overall features
  • Compatible with all major operating systems
  • FTDI processor
  • Indication LED's for Power, TX and RX
  • Fail-safe bias resistors
  • No power supply needed
  • No IRQ/ DMA conflicts
  • Automatic send data control
  • Auto detection of data speed
  • Zero delay automatic transmission
  • Screw terminal board included with each converter

Useful optional accessories
(not included)

Null modem adapter
Null modem adapter

DB9 to RJ45 adapter
DB9 - RJ45 adapter

DB9 gender changer
Gender Changer

Part number XS890
Operating system
  • Windows 10 (32/64-bit), Windows 8.1, 32/64, Windows 8 32/64, Windows 7 32/64, Vista 32/64, XP 32/64, Server 2003/8R2 32/64, 2000, ME, 98Se (WHQL compliant)
  • Linux
  • Mac OS 8, OS 9, OS X
  • Windows CE.NET (Version 4.2 and greater)
  • Android
Processor FTDI FT232RL
Serial driver Sipex SP485EE
Unique chipID no. Yes, each converter has it own unique ID number which can be accessed by the user with the D2XX driver programmers guide.
RS485 / RS422 Interface DB9 Male / included screw terminal header
RS485 output power 3.60VCD (between D+ and GND)
Fail-safe bias resistors Yes
USB interface Standard Type A Male
Indication LEDs TX, RX and Power
Ports 1-port available for RS485 and RS422 individually
Signals RS485, 2-wire half duplex: D+, D-, GND
RS422, 4-wire full duplex: TX+, TX-, RX+, RX-, GND
Baud rate 300-921.600bps (up to 3kbps by using alising)
Parity None, Odd, Even, Mark, Space
Data Bits 7, 8
Stop Bits 1, 2
TX / RX buffer size 256 Byte Transmit Buffer / 128 Byte Receive Buffer
Adjustable USB transfer sizes for TX and RX From 64 bytes to 4096 bytes
Adjustable latency timer 1 to 255 msec
Adjustable read and write timeouts 0 to 10000 msec
Flow Control None, Xon/Xoff, Hardware
COM port accessible by Included virtual COM port drivers or FTD2XX.DLL
Special features
  • Compatible with Modbus RTU/ASCII, BACnet
  • Supports non-standard baud rates
  • Automatic Send Control
Electrostatic (ESD) protection 600W surge protection, 15KV static electricity protection
Current draw Static: less than 80mA. Dynamic average: less than 150mA
Interface compliance USB1.1,2.0,3.0, EIA/TIA RS-232
Regulatory compliance FCC, CE and RoHS
Working temp -20°C to 60°C
Cable length 56" not including the connectors
Size 70mm x 35mm x 18mm
Warranty 1 year limited warranty

For alternative USB to serial RS485 and RS422 solutions please see our full selection of USB to Serial RS485 converters

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