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4-Port Opto-Isolated Serial PCIe MiniCard Module
  • Details
  • Specification
  • Order information
  • Number of serial ports: 4
  • Protocols: RS-232/485
  • Isolation: +/-500V input/output
  • Operating temperature: -40°C to +85°C

The DS-MPE-SER4OPT is a rugged, low cost 4‑port opto‑isolated PCIe MiniCard serial module that is ideal for serial I/O expansion in embedded and OEM applications.

The DS-MPE-SER4OPT offers 4x RS-232/RS-485 opto-isolated serial ports in a PCIe MiniCard form factor. Each port offers 16C550 compatibility and ultra-deep 256-byte TX/RX FIFOs. Maximum data rates are 1Mbps in RS-232 mode and 10Mbps in RS-485 mode. The board is available preconfigured for 4 RS-232 ports, 4 RS-485 ports, or a combination of 2 RS-232 and 2 RS-485 ports. I/O signals are provided on two miniature latching connectors, with 2 ports per connector.

Each pair of serial ports on the DS-MPE-SER4OPT offers up to 500V isolation from the system ground. Optoisolation increases reliability in applications with long cable runs, where a difference in ground potential can cause significant ground loop currents, damaging non-isolated boards and equipment. Isolation on this miniature board is achieved through a combination of highly integrated isolated power + data components, careful component placement and layout, and a safety-enhancing insulation film on the bottom side, which prevents accidental contact with components on the carrier board.

Extended temperature capability (-40°C to +85°C) enables the board to operate in environments with extreme temperature swings, such as vehicles or outdoor installations. In addition, the board may be custom-configured with 0-ohm resistors in place of jumper blocks for increased ruggedness in high-vibration environments.

The DS-MPE-SER4OPT product comes with the 4-port PCIe MiniCard opto-isolated serial module, the CK-SER4M cable kit, and a hardware kit with jumpers and screws.

Technical specifications
Number of serial ports 4
Protocols RS-232/485 on each port, configured in pairs
Maximum baud rate RS-232: 1Mbps
RS-485: 10Mbps
Termination RS-485 jumper selectable
UARTs Quad XR17V354 with PCIe interface
FIFO 256-byte TX/RX
Transceiver SP336 multi-mode
Isolation +/-500V input/output
Input power +3.3VDC +/-5%
Power consumption 0.462W @ 3.3V
Software drivers Windows 7, XP, Vista, 2000
Linux 2.6.16, 2.6.27, 2.6.31, 2.6.32
Form Factor PCIe MiniCard full size
Dimensions 50.95 x 30mm (2 x 1.18")
Weight 8.5g (0.3oz)

Environmental and physical specifications

Operating temperature -40°C to +85°C
Operating humidity 5% to 95% noncondensing
Rohs Compliant
Model Description
DS-MPE-OPT4232 4 Port RS-232 PCIe MiniCard With Optoisolation
DS-MPE-OPT4485 4 Port RS-485 PCIe MiniCard With Optoisolation
DS‑MPE‑OPT4M22 2 RS-232 + 2 RS-485 PCIe Mini With Optoisolation
CK-SER4M Cable Kit, DS-MPE-SER4M PCIe MiniCard Serial Port Module
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