24-Channel Digital I/O PCI Express Mini Card with Change-of-State




The mPCIe-DIO-24S is a type F1 PCI Express Mini Card (mPCIe) and optional cable assembly (D-Sub 37-pin Male connector) with Change-of-State (COS) detection IRQ generation, designed to be easily panel-mounted in any application environment. It uses the high speed PCI Express bus to transfer digital data to and from the card.

The digital I/O is compatible with 8255 PPI chips making it easy to program. This also allows for simple and trouble-free migration from other ACCES PCI and PCI Express digital I/O cards, but also provides for advanced features enabled by the onboard FPGA logic. 

The module is excellent for use in applications sensing inputs such as switch closures, TTL, LVTTL, CMOS logic and controlling external relays, driving indicator lights, and more. 

Ordering Info

  • mPCIe-DIO-24S – 24-Channel Digital I/O PCI Express Mini Card with Change-of-State (COS) detection IRQ generation


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  • Digital Bits: 24
  • Compatibility: 8255 Mode 0
  • Performance: 1 μs per 32-bit transaction max, ∼3.5μs in Windows
  • Digital Inputs
    • Logic High: 2.0V to VCCIO (3.3VDC, 5VDC tolerant)
    • Logic Low 0V to 0.8V
  • Digital Outputs (Standard Version)
    • Logic High: 2.0V (min) 24mA source
    • Logic Low: 0.55V (max) 24mA sink
    • Power Output: +3.3 VDC via 0.5A polyfuse (resetting)
  • TTL with user VCCIO Digital Outputs (-TTL option)
  • Logic High: 3.8V (min) 32ma UVCCIO = 4.5V
  • Logic Low: 0.55V (max) 32ma UVCCIO = 4.5V
  • 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 @ 330ma (typical)
  • Weight: 6.2 grams (plus 22.2g for the cable)
  • 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
    • On cable: Male, D-Sub Miniature, 37-pin
    • Mating:Female, D-Sub Miniature, 37-pin

Delivery Information

Orders dispatched from Assured Systems USA will be delivered using FedEx.

Payment Methods & Options

Accepted payment methods for US customers include bank transfer, VISA or Mastercard in USD.

ACCES I/O: Warranty and Service Information

All ACCES I/O products distributed in the EMEA come with a 2 year warranty as standard, with additional extension options available upon request. As an official ACCES I/O partner, we are proud to provide customers with peace of mind and the highest quality products, including any systems which have been configured to meet individual specifications.

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