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Product Description
The National Instruments USB-8451 I2C/SPI Interface Device, with part numbers 779553-50, 779553-01, 192317D-02, and 192317D-02L, is a versatile and bus-powered USB interface supporting both I²C and SPI protocols.
This device boasts 8 programmable digital I/O lines, enabling customization for various applications, and supports a maximum I²C clock rate of 250 kHz and a maximum SPI clock rate of 12 MHz, ensuring swift data transfers. The USB-8451 is conveniently powered through the USB connection, drawing both GND and +5 V to operate effectively without the need for an external power source.
With robust protection against overcurrent, overvoltage, and undervoltage, the device ensures safe and reliable operation. It features four distinct SPI modes and an advanced API that facilitates custom I2C and SPI transactions for specialized requirements.
The physical design of the USB-8451 is compact, with dimensions of 2.50 x 3.35 x 0.91 inches without connectors, and 3.22 x 3.35 x 0.91 inches with connectors, making it easy to integrate into various setups, while weighing just 3 oz. Connectivity is made simple with a USB series B receptacle and two 16-position screw terminal plug headers for I/O connections, underlining the device’s user-friendly nature.
| Specification | Detail |
|---|---|
| Part Numbers | 779553-50, 779553-01, 192317D-02, 192317D-02L |
| Interface Type | I²C/SPI |
| Bus Type | USB (Bus-Powered) |
| Digital I/O Lines | 8 programmable lines |
| Maximum I²C Clock Rate | 250 kHz |
| Maximum SPI Clock Rate | 12 MHz |
| Power Requirements | USB powered (GND and +5 V) |
| Protection | Overcurrent, overvoltage, and undervoltage |
| SPI Modes | Four modes |
| API | Advanced API for custom I2C and SPI transactions |
| Connectors | USB series B receptacle, two 16-position screw terminal plug headers for I/O |
| Physical Dimensions (without connectors) | 2.50 x 3.35 x 0.91 inches |
| Physical Dimensions (with connectors) | 3.22 x 3.35 x 0.91 inches |
| Weight | 3 oz |
Q1: What is the maximum I²C clock rate supported by the National Instruments USB-8451 I2C/SPI Interface Device, and how does it protect against electrical issues such as overcurrent and undervoltage?
A1: The National Instruments USB-8451 I2C/SPI Interface Device supports a maximum I²C clock rate of 250 kHz.
Q2: What is the maximum I²C clock rate supported by the National Instruments USB-8451 I2C/SPI Interface Device?
A2: The National Instruments USB-8451 I2C/SPI Interface Device is powered through its USB connection, requiring both GND and +5 V, and its physical dimensions are 2.50 x 3.35 x 0.91 inches without connectors, and 3.22 x 3.35 x 0.91 inches with connectors.
Q3: What are the power source requirements and physical dimensions of the National Instruments USB-8451 I2C/SPI Interface Device?
A3: The National Instruments USB-8451 I2C/SPI Interface Device supports a maximum I²C clock rate of 250 kHz and protects against electrical issues such as overcurrent and undervoltage with robust protection mechanisms built into the device.
Q4: What protection features does the National Instruments USB-8451 I2C/SPI Interface Device offer to ensure safe operation, and what is its maximum SPI clock rate?
A4: The National Instruments USB-8451 I2C/SPI Interface Device offers protection against overcurrent, overvoltage, and undervoltage to ensure safe operation, and it supports a maximum SPI clock rate of 12 MHz.
Q5: What are the features and specifications of the National Instruments USB-8451 I2C/SPI Interface Device, including its power requirements and protection capabilities?
A5: The National Instruments USB-8451 I2C/SPI Interface Device features 8 programmable digital I/O lines, supports a maximum I²C clock rate of 250 kHz and a maximum SPI clock rate of 12 MHz, and provides robust protection against overcurrent, overvoltage, and undervoltage. It includes four distinct SPI modes, an advanced API for custom transactions, and a compact physical design measuring 2.50 x 3.35 x 0.91 inches without