The TRACER-DIO-3.3VIO is a safe COTS high current PC/104 digital I/O and counter/timer module. The module provides 48-lines of 8255 compatible general purpose I/O and three 16-bit 8254 compatible counter/timers all at safe 3.3 volt logic voltages to interface to low voltage logic. This product is an update from our classic Tracer-E.  The TRACER-DIO-3.3VIO provides true 3.3 volt output swings and accepts full 5 volt tolerant inputs to interface safely to new low voltage logic.  The TRACER-DIO-3.3VIO is 48-lines of 8255 compatible general purpose I/O and three 16-bit 8254 compatible counter/timers. Optional 2 mm connectors and cables, terminal board and cable accessories are available, contact factory.

Features and Benefits

  • High-Current Outputs can sink 32 milliamps per channel.  This is true even while operating at high temperatures.
  • Low Voltage: Safe interfacing to 3.3 volt low voltage logic.
  • Environmental: Wide operating temperature range of -40oC to +85oC
  • Polarized connectors prevent incorrect cable installations
  • LED status: an LED displays valid card read/write transactions useful for both product development and field status.
  • Single +5V operation:  approximately 500 milliwatts (inputs/outputs unloaded)
  • Out-gassing and fire avoidance: we do not use any tantalum or electrolytic capacitors in any products.
  • Reliability: MTBF of 724,559 hours per MIL-HDBK-217F ground benign at 25oC.
  • Compatibility:  Looking for a second source or drop-in?  Contact us and we can help.
  • Production: Designed and Assembled in Wisconsin, USA, utilizing an ISO 9001 manufacturing facility.
  • Individual Customer Assistance: We will do whatever we can to assist you in designing in our products.

Looking for lower voltage outputs such as 1.8 volts or 2.5 volts or anything in between?  With a simple modification of our Tracer we can support any output voltages from 1.8 volts to 5 volts.  Contact us for details.

Looking for additional features or functions?  Send us your request.


Connector J12 - Digital I/O 8255 Device #1

Standard 50-pin digital I/O connector that is popular across many digital I/O cards.  Supports 8255 mode 0 with ports A, B, & C. 

Cable available with pull-tab and strain relief can be purchased here

Connector J9 - Digital I/O 8255 Device #2 

Standard 50-pin digital I/O connector that is popular across many digital I/O cards.  Supports 8255 mode 0 with ports A, B, & C. 

Connector J13 - Counter/Timer 

Supports 8254 three 16-bit counter/timer I/O.   

 

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