Academic Company Events NI Developer Zone Support Solutions Products & Services Contact NI MyNI

NI USB-8451

I2C/SPI Interface

Configure Page for: Print PDF Rich Text
  • Bus-powered USB interface for I2C, SMBus, and SPI communication; cable included
  • Compatible with Windows Vista/XP/2000
  • I2C master interface with clock rates up to 250 kHz
  • SMBUS master interface with clock rates up to
    100 kHz
  • SPI master interface with clock rates up to 12 MHz
  • High-Level API for LabVIEW, LabWindows™/CVI, and Microsoft Visual C/C++ 6.0
  • Available in OEM board-only version
  • 8 general-purpose digital I/O lines
  • Data Sheet  |  Specifications (2) popup

Part Number Description Est Ship  US Dollars Qty
I2C and SPI Interface
779553-01USB-8451, I2C/SPI Interface--For prices, Select Country 
779553-50USB-8451, I2C/SPI Interface, Board Only OEM Version--For prices, Select Country 
Related Products and Accessories
779511-01USB-6000 Series Prototyping Accessory--For prices, Select Country 
 
 

Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information

The National Instruments USB-8451 is an interface for connecting to and communicating with I2C, SMBus, and SPI devices. With plug-and-play USB connectivity, the NI USB-8451 is a portable solution to communicate with consumer electronics and integrated circuits. It also includes eight general-purpose digital I/O lines for a variety of applications, such as configuring the address of I2C devices or toggling LEDs.

The USB-8451 can be physically located more closely to I2C/SPI devices than PCI interfaces, reducing I2C bus length and minimizing noise problems. Additionally, the interface provides
+5 V and GND to power circuits up to 230 mA with no external power supply.

The National Instruments USB-6000 prototyping accessory attaches to the 16-position connector of the USB-8451 (non-OEM version) interface. It has a small breadboarding area for custom-defined signal conditioning and prototyping within the housing. You can use up to two accessories per USB-8451 module.

Data Sheet | View Pricing and Purchasing Information »

Specifications Documents


Specifications Summary


View Pricing and Purchasing Information »

Extended Warranties

National Instruments designs and manufactures all products to minimize failures, but we know 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.

  • 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 bring the hardware back to manufacturing specifications

Calibration

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

Training

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

Repair Services

  • You can 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 bring the hardware back to manufacturing specifications.
  • Contact us to obtain a Return Material Authorization (RMA) form and shipping instructions
  • View your RMA support request status online
  • Register your product

Technical Support

www.ni.com/support

View Pricing and Purchasing Information »

Back to top »