24-Channel Digital I/O Module for PC/104 Bus

DIO24-104 DIO24-104

  • Stock Number:

  • 100-7543

  • Budgetary Pricing:

  • $98.00 / 001 - 009
  • $93.10 / 010 - 024
  • $88.20 / 025 - 049
  • $83.30 / 050 - 099
  • Contact us for More Quantity Discounts

  • Typical Lead-Time:

  • Stock - 2wks

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The DIO24-104 is a 24-channel digital input/output module designed for PC/104 bus computers. All channels can be individually defined as being an input or output through software. Each output stage is capable of sourcing 2.5ma and sinking 85ma. The DIO24-104 occupies four consecutive, 8-bit, I/O address spaces and the base address can be set to any value between 0 and 1020 decimal. Any single input channel can be configured to interrupt the host when that channel changes state. The polarity can be set to either direction and the transition is latched so that even short duration pulses are captured. CMOS construction assures low power consumption and greater noise immunity from external electrical sources. A single 50-conductor IDC ribbon cable is used to make off-board connections. The pinout of this connector is fully compatible with standard 8, 16 and 24 position solid state I/O module racks and can also feed an external terminal board.


  • 24 Individually programmable digital I/O channels
  • High output current capability (85ma sink per channel)
  • Input interrupt capability
  • Output Read-Back status eases software development
  • Directly connects to standard Solid State Relays Racks and peripheral devices



Number of Channels:24 Individually programmable digital Input/Output channels, non-isolated
Input Level:Logic 0 = 0.8vdc maximum, -0.6vdc minimum
Logic 1 = 2.0vdc minimum, 5.6vdc maximum
Output Level:Logic 0 = < 0.4vdc (15ma load)
Logic 1 = > 2.0vdc (1ma load)
Output Current,
Per Channel (Max.):
Source: 2.5ma, Sink: 85ma
Addressing:Requires 4 consecutive I/O bytes, base address jumper selectable between 0 and 1020 decimal (0 to 0x3fc hexadecimal)
Interrupts:Any single input channel can be configured to interrupt the host computer when that channel changes state.
Jumper selectable for IRQ 3, 4, 5, 6, 7, or 9 ( Note: IRQ9 is re-directed as IRQ2 on most AT computers). Selectable positive or negative polarity, level-edge Pulse detection 2μs pulse width minimum.
Interrupt Sharing:Fully supported including a read-only interrupt status register
Power Requirement:+5vdc ±5% @ 20ma typical, external loads excluded
Connections:J1/P1: 8-Bit stack-through PC/104 Bus, 64 Position
J2/P2: 16-Bit PC/104 Bus, 40 Position (optional 16-bit stack-through)
J3: I/O Connector, 50 Position Keyed IDC Ribbon Cable
Dimensions:PC/104 compliant, 3.6"W x 3.8"L x 0.6"H.
8-Bit stack-through. Holes provided for adding optional J2/P2 connector creating 16-bit stack-through compatibility
Environmental:Operating Temperature: -40°C to 85°C
Non-Condensing Relative Humidity: 5% to 95%
Product Origin:Designed, Engineered, and Assembled in U.S.A. by SCIDYNE Corporation using domestic and foreign components.

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