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IBT Technologies Inc.; 4028 Steinberg; Quebec, Canada H4R 2G7; 1-866-590-4288; info@ibt.ca
I/O 8339 uPCI Parallel pc-104 2 ports RS-422/485 Card
Product detail



RS-422/485 PCI/104 embedded module combines small size, industrial grade construction and reliability specifications plus performs the functions most commonly need in embedded application.

Because PC/104 modules uses smart stacking bus design, they avoid the costs and bulk associated with backplanes or card cage. It work with PC/104 CPU boards that accept the PCI/104 expansion interface, and comes with DB9 or DB25 connection cables are available as options to meet users' varied connection requirements.


  • Low RMA rate and high reliability with single chipset designed ASIC
  • Industrial grade design for stability and reliability
  • 128K FIFO buffer can reduce CPU loading, less interruption and improving system performance dramatically
  • RS-422/485 Auto Identify and Switch technology enable device plug-n-play without jumper or switch setting
  • ARSC™ (Auto RTS Signal Control) technology allows accurate switching of the transmitter on and off for precise timing of the data transmission
  • RS-422/485 Handshaking Communication provides hardware flow control for best prevention of data error or data lost
  • Built-in termination resistors to avoid cross-talking
  • RS-422/485 industrial host controller series are certified by CE, FCC approval
  • Support Microsoft Windows, Linux, and DOS


Type PCI/104 Embedded Serial card
Mode of Operation Differential
Bus Transceiver RS-422 Full-Duplex
RS-485 Half-Duplex
Driver per Line RS-422: 1 Driver
RS-485: 32 Drivers
Receiver per Line RS-422: 10 Receivers
RS-485: 32 Receivers
Host Controller SUN1889 UART (16C650 compatible)
Bus Interface PCI/104 32-bit PCI
PCB Connector 10-pin IDC male
Number of Port 2 x RS-422/485
IRQ & I/O Address BIOS assigned
FIFO 32 byte hardware FIFO
128K byte assigned FIFO
RS-485 RTS Control Auto RTS Signal Control (ARSC™)
RS-422/485 Select RS-422/485 Auto Identify & Switch (AIS)
Baud Rate Up to 921.6 Kbps
Data Bits 4, 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Odd, Even, Space, Mark
Flow Control None, Xon/Xoff, RTS/CTS
Data Signal RS-422: Tx+, Rx+, Tx-. Rx-, RTS+, CTS+, RTS-, CTS-
RS-485: Data+, Data-, RTS+, CTS+, RTS-, CTS-
OS Support
Microsoft Win 9x/ME/NT, Win 2K/XP/2003, Win CE
Linux 2.0.x, 2.2.x, 2.4.x
Operating Environment
Operating Temperature 0 ~ 57 °C
Humidity 5 ~ 95% RH
Storage Temperature -20 ~ 85 °C
Regulatory Approvals
Hardware CE, FCC (Class B)

Package list

  • PCI/104 RS-422/485 Embedded Board
  • Cable 2 x 10-pin IDC to DB9M or DB25M
  • Software & driver CD
  • User manual
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