USB-8451 Data Acquisition Card, Part Number: 779553-01

# NI USB-8451 Compatible with Windows 7, Vista, XP and 2000 Bus-powered USB interface for communication with I2C, SMBus and SPI; cable included I2C master interface clock rate up to 250 kHz SMBus master interface clock rate up to 100 kHz SPI master interface clock rate up to 12 MHz APIs available for NI LabVIEW, NI LabWindows/CVI and Microsoft Visual C/C++ 6.0 Board-only version available 8 general-purpose digital I/O lines --- ## Specifications Summary ### General - Product Model: USB-8451 - Product Family: I2C/SPI - Bus Type: USB - Part Number: 779553-01 - Operating System / Target: Windows - LabVIEW RT Support: No - Voltage: 5 VDC - Current: 80 mA - Power Supply: Internally powered - OEM Version Available: Yes ### Port Specifications - Number of Ports: 1 - I2C Clock Frequency: 250 kHz - SPI Clock Frequency: 12 MHz - Termination: External ### Special Features - Hardware Synchronization: No - Hardware Timestamping: No ### Physical Specifications - Length: 8.18 cm - Width: 8.51 cm - Height: 2.31 cm - I/O Connector: Screw Terminals ### Operating Temperature - Range: 0 °C to 45 °C