Ethernet 48 or 24-Channel Digital I/O Board

Main Features:


  • Ethernet 10/100 RJ45 connector for interfacing to CPU or network
  • 48 or 24 channel high-current TTL digital I/O lines
  • Compatible with industry standard I/O racks such as Grayhill, Opto 22, Western Reserve Controls, etc.
  • Eight-bit ports software selectable for inputs or outputs
  • All 48 digital I/O lines buffered with 32 mA source / 64mA sink current capabilities
  • Jumper selectable I/O pulled up to 5V (via 10KΩ) for contact monitoring, pulled down to ground or floating
  • 5VDC regulated external power supply included
  • Resettable 0.5A fused +5VDC output per I/O connector
  • Standard 50-pin IDC-type shrouded connectors with key
  • Small, (4"x4"x1.7") rugged, steel industrial enclosure


Factory Options:

  • Low-voltage (LVTTL) for 3.3V applications
  • Industrial operating temperature (-40°C to +80°C)
  • OEM version (board only), features PC/104 size and mounting compatibility
  • DIN rail mounting provision
  • RoHS available, please contact us for ordering information




Digital I/O (TTL Compatible):

  • Channels / Groups: 48 or 24 in 8-bit groups
  • Inputs:
    • Logic High: 2.0 VDC minimum, 5.5 VDC max.
    • Logic Low: -0.5 VDC minimum, 0.8 VDC max.
  • Bias Resistors: 10KΩ
  • Outputs:
    • Logic High: 2.0 VDC minimum, source 32 mA
    • Logic Low: 0.55 VDC maximum, sink 64 mA
  • Sample Rate: Up to 2500 round-trip DI/O Read/Write transactions per second (Note: performance is
  • critically affected by network traffic)


Bus Type:

  • Ethernet 10/100 Base T, Auto-detecting



  • Operating Temperature Range: 0°C to 70°C (Optional -40°C to +80°C)
  • Storage Temperature Range: -40°C to +85°C
  • Humidity: 5%-90%, non-condensing



  • Board Dimension: 3.550 x 3.775 inches
  • Box Dimension: 4.00 x 4.00 x 1.25 inches
  • Connectors:
    • I/O: Dual row 0.1” 50 pin shrouded headers with grounds on all even pins to suppress crosstalk
    • DC power jack: 2.0mm + center post
    • Screw terminals: Available via enclosure cutout



  • External AC/DC 5V regulated adaptor is included
  • Basic 48 bit unit: +5VDC from external regulated power supply, <300mA typical (no load)
  • Auxiliary Outputs: +5VDC via 0.5A resettable fuse for both connectors


Regulatory Compliance:

  • This product is designed to be in full compliance with CE requirements.






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Contact Details

EPS-Tech Ltd.

Industrial park, Tzur-Igal
2 Bazelet St,

Israel, 44862

Tel: +972-9-749-8585
Fax: +972-9-749-8686
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.