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Discrete I/O - Multichannel/Programmable

Discrete I/O multichannel programmable modules provide interfacing solutions for almost any embedded or test application. NAI's discrete I/O modules are offered in two versions: Standard Functionality (SF) modules and Enhanced Functionality (EF) modules. All the modules feature unparalleled programming flexibility, a wide range of operating characteristics, and a unique design that eliminates the need for pull-up resistors or mechanical jumpers. The EF Modules add built-in operational functionality to provide Pulse/Frequency Period Measurements of the incoming signal (Input) and/or Pulse/Frequency arbitrary signal generation (Output).

COSA® Design Advantages

As a result of our Configurable Open Systems Architecture™ (COSA®), NAI’s I/O Boards can be configured in a virtually unlimited number of ways.

Select from over 70 pre-integrated I/O, measurement, simulation or communication functions to meet your application-specific requirements quickly, and without the need for custom boards or NRE charges.



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Available rugged system chassis are scalable to support distributed, networked and high-density centralized systems.




All NAI products are 100% designed and manufactured in the United States.

DT1
24 Ch, Discrete I/O (0 to 60 VDC, 500 mA/Ch.)
  • No. of Channels: 24 Channels
  • Input Modes: Voltage, Contact Sensing
  • Input Range: 0 to 60 VDC
  • Output Modes: Current Source, Sink, Push-Pull
  • Output Voltage Range: 0 to 60 VDC
  • Output Current: 0.5 A maximum (28 V Vcc typical) per channel

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DT2
16 Discrete/Switch I/O Channels (±80 V, 625 mA/Ch.)
  • No. of Channels: 16 Channels
  • Input Modes: Voltage Input, Switch
  • Input Range: ±80 V (peak) / ±60 V (typical)
  • Switch Format: Isolated bidirectional (AC/DC) MOSFET Switch
  • Switch Current: 0-625 mA per channel (load determined) / (±80 V peak)

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DT3
Discrete Output, 4-Channel, High Current (to 2 A)
  • No. of Channels: 4 Channels
  • High Current Switching: 2 A (max), load dependent
  • High Input Voltage Power Supply Range: ±5 to ±35 VDC (VCC & VSS dual source); 5 to 65 VDC (VCC single source)
  • Discrete Mode Functions: PUSH-PULL Output commands; current source or sink, PWM Output command; PWM Continuous or Burst modes (n-times), Up to 500 kHz maximum, OFF command = channel tri-state, high-Z

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DT4
Enhanced 24 Discrete I/O Channels (0 to 60 VDC, 500 mA/Ch.)
  • No. of Channels: 24 Channels
  • Input Modes: Voltage, Contact Sensing
  • Input Range: 0 to 60 VDC
  • Output Modes: Current Source, Sink, Push-Pull
  • Output Voltage Range: 0 to 60 VDC
  • Output Current: 0.5 A maximum (28 V Vcc typical) per channel

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DT5
Enhanced 16 Discrete/Switch I/O Channels (±80 V, 625 mA/Ch.)
  • No. of Channels: 16 Channels
  • Input Modes: Voltage Input, Switch
  • Input Range: ±80 V (peak) / ±60 V (typical)
  • Switch Format: Isolated bidirectional (AC/DC) MOSFET Switch
  • Switch Current: 0-625 mA per channel (load determined) / (±80 V peak)

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CM8
Combination Module: 2 Ch. MIL-STD-1553 & 12 Ch. Discrete I/O
  • No. of Channels (MIL-STD-1553): 2 Channels
  • Onboard RAM: 128 K words onboard memory per channel
  • Operational Modes: Bus Controller (BC), Remote Terminal (RT), Bus Monitor (BM), or BM/RT
  • No. of Channels (Discrete I/O): 12 Channels
  • Input Modes: Voltage, Contact Sensing
  • Input Range: 0 to 60 VDC
  • Output Modes: Current Source, Sink, Push-Pull
  • Output Voltage Range: 0 to 60 VDC
  • Output Current: 0.5 A maximum (28 V Vcc typical) per channel

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