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NI 9401

8 Ch, 5 V/TTL High-Speed Bidirectional Digital I/O Module

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  • 8-channel, 100 ns ultrahigh-speed digital I/O
  • 5 V/TTL, sinking/sourcing digital I/O
  • Bidirectional, configurable by nibble (4 bits)
  • Industry-standard 25-pin D-SUB connector
  • Hot-swappable operation
  • -40 °C to 70 °C operating range


The NI 9401 is an 8-channel, 100 ns bidirectional digital input module for any NI CompactDAQ or CompactRIO chassis. You can configure the direction of the digital lines on the NI 9401 for input or output by nibble (4 bits). Thus, you can program the NI 9401 for three configurations - eight digital inputs, eight digital outputs, or four digital inputs and four digital outputs. With reconfigurable I/O (RIO) technology (CompactRIO only), you can use the NI LabVIEW FPGA Module to program the NI 9401 for implementing custom, high-speed counter/timers; digital communication protocols; pulse generation; and much more. Each channel is compatible with 5 V/TTL signals and features 1,000 Vrms transient isolation between the I/O channels and the backplane.

The NI 9934 (or other 25-pin D-SUB connector) is required for use with the NI 9401 module. The module includes a screw-terminal connector with strain relief as well as a D-SUB solder cup backshell for creating custom cable assemblies.

EMC Performance
To ensure EMC compliance, you must use a ferrite bead, such as NI part number 782803-01.

Specifications Documents

View Data Sheet

Specifications Summary

General
Product Name NI 9401
Product Family Industrial I/O
Form Factor CompactDAQ , CompactRIO
Part Number 782401-01 , 779351-01
Operating System/Target Real-Time , Windows
Measurement Type Digital
Isolation Type Ch-Earth Ground Isolation
RoHS Compliant Yes
Analog Input
Channels 0
Single-Ended Channels 0
Differential Channels 0
Analog Output
Channels 0
Digital I/O
Bidirectional Channels 8
Input-Only Channels 0
Output-Only Channels 0
Timing Hardware
Maximum Clock Rate 10 MHz
Logic Levels TTL
Input Current Flow programmableCurrent
Output Current Flow programmableCurrent
Supports Handshaking I/O? Yes
Supports Pattern I/O? Yes
Maximum Input Range 0 V - 5.25 V
Maximum Output Range 0 V - 5.25 V
Counter/Timers
Counters 0
Physical Specifications
Length 9 cm
Width 2.3 cm
I/O Connector 25-pin D-Sub
Minimum Operating Temperature -40 °C
Maximum Operating Temperature 70 °C
Minimum Storage Temperature -40 °C
Maximum Storage Temperature 85 °C
Timing/Triggering/Synchronization
Triggering Digital
Triggers cDAQ Chassis Yes

NI 9401 Packages

To use the NI 9401 , you need all items in the diagram below. Select Option 1 if you already own a C Series System, or Option 2 if you do not already own a chassis, controller, or software.

Roll over the icons below to learn why you need each item in the system

C Series System
1 Terminal Block NI 9401 Chassis PC/Controller Software
NI 9401 and Accessories Only
NI 9401 Module
779351-01 Qty $ 287 each

Required Accessories
Terminal Block -
Qty $ 102 each
 
Optional Accessories Hide
EMI Suppression Ferrite for NI 9401 (qty 1) - 782803-01
Qty $ 4 each

Package Price: $ 389
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Select a Platform and Configure a System
Create a complete system with the NI 9401 and its accessories. However, the NI 9401 is compatible with multiple C Series Platforms, NI CompactDAQ and CompactRIO. Please review the comparison information below and select a platform to begin configuring your system.
Configure System Configure System
NI CompactDAQ CompactRIO
video
video
Mixed-Measurements

Customizable with a variety of chassis and module types.
Learn more

Deterministic & Rugged

Time-Critical Control & Monitoring
Learn more

Features NI CompactDAQ CompactRIO
USB, Wi-Fi, Ethernet Ethernet
-20 to 50 C -40 to 70 C
LabVIEW, C, C++, VB.NET, C#.NET LabVIEW, LabVIEW RT, LabVIEW FPGA only
PC Based Headless Embedded Controller (Standalone or network)
Laboratory - 30 g shock and 0.3 grms operational vibration Field Work - 50 g shock (Class I, Div 2 for Hazardous Locations)
Since your device does not have direct signal connectivity, you need a terminal block to act as an interface between your sensors/signals and your device. A terminal block provides easy access to the inputs and outputs of your hardware.
The chassis provides rugged, modular housing for your controller (if using CompactRIO) and C Series modules. A high-performance backplane in the chassis contains the system's data, timing, and triggering buses.
The controller runs your application and interfaces with your C Series modules. If you are using the NI CompactDAQ platform, then a Personal Computer (PC) will act as the controller of your system. However, if the CompactRIO platform is used then an embedded real-time controller will be used instead.
You need software to interface with your hardware and to collect, analyze, present, and store your measurements. This device is compatible with a different programming languages depending on the platform used. If you are using the NI CompactDAQ platform then this device is compatible with LabVIEW, C/C++, Visual Basic, and .NET. However, if the CompactRIO platform is used then this device requires the LabVIEW FPGA Module (sold separately), the LabVIEW Real-Time Module (sold separately) and NI-RIO driver software (included with the hardware).

You have selected United States as the country where you will use the product(s) (change).

System Assurance Programs

Reduce your setup time and total cost of ownership, and get a system you can use out of the box with National Instruments system assurance programs. System assurance programs include:

  • Installation and integration test of all individual hardware
  • Courtesy installation of system driver sets and application development environments
  • Extended warranty and calibration coverage for up to five years
  • Custom documentation plus a custom restore and startup utility

This service is only available for PXI, NI CompactRIO, and NI Compact FieldPoint systems.

Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

For more information about your warranty options:

Calibration

NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.

Training

NI training is the fastest, most certain route to productivity with NI tools and successful application development.

Repair Services

Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.

Technical Support

ni.com/support