PC/104 48 Channel TTL Digital Interface Portholes Kit

Part: 3701-KT   Model: DIO 48.PC104 Kit

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The 3701 PC/104 digital I/O interface module is designed around an ASIC emulating two 8255 chips, each providing 24 I/O lines. The board has a DIP switch for flexible I/O addressing, IRQ jumpers for interrupts and two sets of connectors for each port. A standard 50-pin solid state relay I/O module connector is provided.

Includes 3701 PC/104 board, ribbon cables, and Portholes™ mounting plate with removable screw terminals for installation in an enclosure.

Note: This item has a minimum order quantity (MOQ) of 25 units. Please contact your sales representative with any questions.


Additional information

Board Connector

(2) 50-Pin Headers



Digital I/O


Extended Temperature

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Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)


Number of Inputs/Outputs

48 (TTL)

Operating Temperature

0°C to 70°C (32°F to 158°F)

Output Specification

Sink up to 24mA, Source up to 15mA

Plate Connectors

Screw Terminals

# of Ports


Power Requirement

+5V @ 794mA

Storage Temperature

-50°C to 105°C (-58°F to 221°F)

48 channels of buffered TTL I/O
Each 8-bit port individually configurable as input or output
8255 mode 0 compatible
10K pull up resistors on each bit
+5V power and ground provided on connector
Right-angle connectors available for OEM opportunities, two industry standard 50-pin solid-state relay rack vertical header connectors standard
Includes mounting plate with screw terminals and ribbon cables for installation in Relio enclosure


Manual: 3701


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