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National Instruments NI-9435 Digital input module
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National Instruments · CompactDAQ

NI-9435

The NI-9435 is a four-channel C Series digital input module for AC/DC signals with sinking or sourcing inputs. It provides detachable screw-terminal connections and an LED for each input channel.

ManufacturerNational Instruments
ModelNI-9435
Part Number779010-01
Product TypeDigital input module
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Digital inputs4 channels
Input directionSinking or sourcing
Signal range±5 to ±250 VDC; 10 to 250 VAC
Connection10-terminal detachable screw-terminal connector
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Overview

Product overview

Key product information and technical features.

The NI-9435 connects industrial switches, transducers, and other discrete signal sources to a C Series measurement system. In a CompactDAQ chassis, it supports correlated digital operations, triggering, and synchronization.

Each channel uses a pair of interchangeable DIa and DIb terminals. The module detects the digital state from the voltage difference between these terminals rather than measuring an analog voltage value.

  • Accepts sinking-output and sourcing-output devices.
  • Supports both AC and DC discrete input signals.
  • Individual channel LEDs indicate input states.
  • Provides transient overvoltage protection between input channels and earth ground.
Verified specifications

Technical data

Verified product specifications.

Digital input channels4 channels
Input typeSinking or sourcing
DC signal range±5 to ±250 VDC
AC signal range10 to 250 VAC
Nominal update time3 ms
Maximum input delay time2.8 ms
Front connector10-terminal detachable screw-terminal connector
Condition & included items

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Compatibility

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National Instruments

Manufacturer

CompactDAQ / C Series

Chassis platform and module family

NI-9435

Four-channel digital input module

System integration

Supports correlated digital operations in CompactDAQ.

Check the exact chassis and software combination in NI's compatibility documentation before integration.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-9435 Official Product PageProduct Page · ni.com
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NI 9435 Operating Instructions and SpecificationsManual · download.ni.com
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C Series Module and CompactDAQ or CompactRIO Hardware Compatibility with LabVIEWTechnical resource
Open →
Shipping, warranty & returns

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Warranty
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Returns
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Related products

Alternatives & system components

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NI-9422View product →

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CompactDAQ

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Can the NI-9435 accept both AC and DC signals?

Yes. NI specifies signal ranges of ±5 to ±250 VDC and 10 to 250 VAC.

Is the NI-9435 a digital output module?

No. It provides four digital input channels for sensing discrete signal states.

What does the 3 ms rating describe?

NI lists a 3 ms update time for this module. The operating manual separately specifies a maximum input delay of 2.8 ms; these are distinct specification labels.

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