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July 2025
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USB-485, 1-Port, RS-485/RS-422 Serial Interface Device
Rated 4.83/5 | 18 ratings
Actual item may vary if no part number is provided on quote request.
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Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments USB-485 Serial Interface Device
The USB-485 (Part Number: 778475-01) is a Serial Interface Device with one port from National Instruments. This device allows users to transform the Universal Serial Bus (USB) port into another type of serial port. This port is called an Asynchronous Serial Port. This transformation enables smooth communication with many Serial Devices. The USB 485 offers the communication of the RS-422 and RS-485 standards. This Serial Interface Device is compatible with several types of OS, including Windows 2000 and Windows XP. This instrument is functional with standard PC serial ports.
The USB-485 Communication Interface offers many distinguishing features, such as the capability to communicate with as many as 31 devices. The maximum value of the transfer rate for this product is 460.8 kb/s. This instrument also has a software selectable biasing feature. This feature enables the users to switch among the states and includes on and off states for biasing requirements. This function can be performed for each port. The USB-485 National Instruments allows access to different development environments. These environments use standard serial input/output functions for this access. They include Visual Basics, Visual C++, and Excel. The National Instruments software such as LabVIEW can also access these serial ports. The NI device is equipped with a DB-9 male I/O connector and a USB series A plug connector with a captive cable. It has a typical power requirement of 175 mA and a maximum of 500 mA at +5 VDC.
The NI USB-485 weighs 0.26 lb, and measures 1.5 x 1.4 x 0.6 in. in physical dimensions. The device can work at different temperatures. The lower limit of the working temperature for this instrument is 0 degrees Celsius while the upper limit of the working temperature for this instrument is 70 degrees Celsius. Also, it has a non-condensing relative humidity range of 10% to 90%. This Serial Interface Device has an extensive storage temperature range of -40 to 80 degrees Celsius, and a non-condensing storage humidity range of 5 to 95% RH.
The USB-485 is designed to comply with the following electrical safety standards: IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1.
| Model | USB-485 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 778475-01 |
| Type | Serial Interface Device |
| Ports | 1 |
| Isolation Type | None |
| Supported Serial Protocols | RS-485/RS-422 |
| Dimensions | 1.5 × 1.4 × 0.6 in. |
| Weight | 0.26 lb. |
| Warranty | Three Year Warranty |
| USB-485 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for USB-485:
National Instruments USB-485 Frequently Asked Questions
Question: What is the power requirement for the USB 485 at +5 VDC?
Answer: AT +5 VDC, the power requirement for the USB 485 is 175 mA typical and 500 mA maximum.
Question: Does the USB-485 National Instruments have adjustable FIFO settings?
Answer: No, the USB-485 National Instruments does not have adjustable FIFO settings.
Question: Which type of I/O connector does the NI USB-485 have?
Answer: The NI USB-485 has a DB-9 male I/O connector.
USB-485 PDF Manuals
NI-SERIAL-HARDWARE-SPECIFICATIONS-GUIDE.PDF
NI-SERIAL-HARDWARE-SPECIFICATIONS-AND-FEATURES-GUIDE.PDF
SERIAL-QUICK-REFERENCE-GUIDE.PDF
USB-232-USB-485-LETTER-OF-VOLATILITY.PDF
USB-SERIAL-HARDWARE-AND-SOFTWARE-INSTALLATION-GUIDE-AND-SPECIFICATIONS.PDF
Driver Downloads for USB-485
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