mPCIe with 8 Isolated lDIO Change-of-State Detection and FET Relay Outputs

mPCIe with 8 Isolated lDIO Change-of-State Detection and FET Relay Outputs




The mPCIe-IDIO-8 is a type F1 PCI Express Mini Card (mPCIe) interface board that connects to a Mobile-ITX-sized, DB-37M Isolation Module via an included 9” cable. The digital I/O is compatible with 8255 PPI chips for easy programming and are well suited to complex environments, mitigating otherwise challenging ground-loops, high-common-mode, and transient voltage spikes common in electrically-noisy industrial or factory locations. The broad voltage compatibility and high current outputs allows use in a wide range of applications.

The non-polarized inputs support both AC and DC, and configuration jumpers allow 4.7ms input filters to be enabled per-channel, as desired – required for AC use. The isolated inputs support voltages from 3 to 31 VDC/VAC RMS [40Hz to 10000Hz], as well as standard 12/24 AC control transformer signals.

The outputs are fully protected High-Side Power MOSFETs capable of switching from 5 to 34VDC at up to 2A continuous-current load with 10A max current allowed (VBB0 = 5A, VBB1 = 5A).

Ordering Info

  • mPCIe-IDIO-8 – mPCIe with 8 DIO Change-of-State Detection and Solid State FET Relay Outputs


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  • Isolated Inputs
    • Number: 8 (or 4)
    • Type: Non-polarized, optically isolated from each other and from the computer (CMOS compatible)
    • Voltage: 3 to 31 DC or AC RMS (40 to 10000Hz)
    • Isolation: 500V channel-to-ground and channel-to-channel
    • Resistance: 1.8KΩ in series with opto-coupler
    • Filter Response
      • Rise-time: 4.7 ms
      • Fall-time: 4.7 ms
    • Non-Filter Response
      • Rise-time: 10 μs
      • Fall-time: 30 μs
  • FET Outputs and Digital I/O Lines
    • Number: 8 (or 4)
    • Type: High Side Power MOSFET Switch. Protected against short-circuit, over-temp, ESD; drives inductive loads.
    • Current Rating: 2A maximum
    • Turn On time: 90μsec (typical)
    • Turn Off time: 110μsec (typical)
    • Digital Inputs
      • 8 or 4 LVTTL
        • Logic High: 2.0V to VCCIO (3.3VDC, 5VDC tolerant)
        • Logic Low: 0V to 0.8V
    • Digital Outputs
      • 8 or 4 LVTTL
        • Logic High: 2.0V (min) 24mA source
        • Logic Low: 0.55V (max) 24mA sink
  • Environmental
    • Temperature
      • Operating: 0°C to 70°C (order -T option for industrial temperature -40°C to 85°C)
      • Storage: -65°C to 150°C
    • Humidity: 5% to 95%, non-condensing
    • Power required: +3.3VDC @ 360ma (typical)
  • Physical
    • mPCIe card characteristics
      • Weight: 6.2 grams
      • Size
        • Length: 50.95mm (2.006″)
        • Width: 30.00mm (1.181″)
      • I/O connector
        • On-card: Molex 501190-4017 40-pin latching
        • Mating: Molex 501189-4010
    • Isolation board characteristics
      • Weight: 38.2 grams, (+11.2 grams for the 9″ cable)
      • Size (Mobile-ITX sized)
        • Length: (2.952″)
        • Width: (1.1.772″)
      • I/O connector
        • On board: Female, D-Sub Miniature, 37-pin
        • Mating: Male, D-Sub Miniature, 37-pin