The NI 9375 is a 24V, 16-channel digital input/output module engineered for industrial automation and process control. It combines 16 sinking digital input channels with 16 sourcing digital output channels on a single C Series module, integrating directly with NI CompactDAQ and CompactRIO platforms via spring terminal connectivity. The module handles input signals from 0 VDC to 30 VDC and output signals from 6 V to 30 V, depending on external power supply configuration. Input propagation delay is 7 µs; output propagation delay reaches 500 µs maximum.
Technical Specifications
Digital Input
• 16 channels, sinking configuration
• 24V logic-level compatible
• Input voltage range: 0 VDC to 30 VDC
• Maximum propagation delay: 7 µs
• Internal current limiting enabled
Digital Output
• 16 channels, sourcing configuration
• Output voltage range: 6 V to 30 V (external supply dependent)
• Maximum propagation delay: 500 µs
• Continuous output current varies by load: example configurations include two channels at 250 mA, six channels at 125 mA, eight channels at 62 mA
• Short-circuit protection with automatic cycling until fault clears
Isolation & Safety
• DI-to-DO bank isolation: 60 VDC
• Channel-to-earth ground: 250 Vrms (CAT II), 1,000 Vrms withstand
• Channel-to-COM or Vsup-to-COM: 30 V DC maximum
• Measurement category: CAT II (Spring Terminal)
Power
• Maximum active mode: 450 mW
• Maximum sleep mode: 25 µW
– Key Features
• Spring terminal connectors for industrial field wiring
• Dual-bank isolation protects against transient voltage events
• Wide output voltage range accommodates diverse external supplies
• Built-in short-circuit protection on output channels
• Low input propagation delay supports time-critical I/O operations
– Typical Applications
Process automation, equipment control, discrete sensor and actuator interfacing, industrial logic sequencing, and machine safety circuits requiring galvanic isolation.
– Compatibility & Integration
NI CompactDAQ and CompactRIO ecosystems. C Series slot architecture enables mixed-signal module configurations within single chassis.
