National Instruments NI 6581 Digital I/O Adapter Module for FlexRIO
  • National_Instruments_NI_6581_View1_20191127141824
  • National_Instruments_NI_6581_View2_20191127141419
  • National_Instruments_NI_6581_View3_20191127141419
  • National_Instruments_NI_6581_View4_20191127141419

National Instruments NI 6581 Digital I/O Adapter Module for FlexRIO

• Weight: 284 g (10 oz)
• Front Panel Connectors: Two 68-Pin VHDCI Connectors
• External Power Source Voltage Range: 1.8 to 5.5 Volts

Part Number: 198713D-01L

Have a quote from somewhere else? Click Here
Stock # 47950-1
Quick Quote
Sell Yours
Repair Quote
  • More Info
  • Tech Specs
  • Additional Photos
  • Datasheets / Manuals 
  • View It Live Request 
Contact Us
National Instruments NI 6581 Digital I/O Adapter Module for FlexRIO

  • Can Operate Standard Protocols
  • Support for Common Transistor-to-Transistor Logic
  • Other Voltage References Can Be Sourced Externally


The NI-6581 is a digital I/O adapter module that, when combined with a PXI FPGA Module for FlexRIO, creates a digital instrument for interfacing with 54 single-ended digital pins. You can use the NI-6581 to do real-time interfacing of standard protocols and implement customized protocols.

Product Family: NI 6581

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

Contact Us


Contact Us

Item Images

Click a thumbnail to view larger image:

National Instruments NI 6581 Digital I/O Adapter Module for FlexRIO

Contact Us
Manuals, Datasheets, Drivers, Links

National Instruments NI 6581 Manual (pdf) 
Link to National Instruments Website 

Contact Us

View It Live

View equipment LIVE - Before you buy!

InstraView™ Equipment Inspection

Buying used equipment doesn't always have to be a shot in the dark. We know there are plenty of differences when it comes to used equipment and quite often, choosing between different pieces is difficult, especially when the equipment is not sitting right in front of you.

Well, what if you were able to see a piece of equipment before you purchased it? Not just a picture from the manufacturer's website, but the actual piece of equipment you would receive.
With InstraView™, we move you one step closer to inspecting the equipment you're interested in without having to wait for the equipment to show up at your door.

InstraView™ works in your web browser and allows you to view the actual piece of equipment you're interested in before purchasing. You can zoom in close to see the labels with the serial number or zoom out to see the overall condition of the equipment.

It's like having the store come to you!

InstraView Request Form

To get started:

  1.   Fill in the request form below
  2.   We'll send you an email letting you know exactly when your piece of equipment will be available for viewing

Item to Inspect: 47950-1 - National Instruments NI 6581 Digital I/O Adapter Module for FlexRIO

All you need is a web browser (ie. Microsoft Internet Explorer or Netscape) and Sun's Java Runtime Environment installed. If you need to install the Sun Java Runtime, you may download the latest Java SE Runtime Environment (JRE)