{"product_id":"i2c-switch","title":"I2C Switch","description":"\u003cp\u003eThe I2C Switch from AB Electronics is a 4 channel bidirectional I2C switch controlled via the I2C-bus. It is designed for use on all Raspberry Pi models with the 40 pin GPIO connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoldering required! This product comes unassembled and unsoldered.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe I2C Switch is based around a PCA9546A controller from NXP. The PCA9546A provides quad bi-directional communication between the I2C port on the Raspberry Pi and any attached I2C devices. Each channel can be individually enabled or disabled allowing you to connect I2C devices that share the same address to your Raspberry Pi.\u003c\/p\u003e\n\u003cp\u003ePowered through the host Raspberry Pi using the GPIO port and extended pins on the GPIO connector allowing you to stack the I2C Switch along with other expansion boards.\u003c\/p\u003e\n\u003cp\u003eEach channel can operate at 2.7V, 3.3V or 5V allowing you to mix different voltage I2C devices on your Raspberry Pi.\u003c\/p\u003e\n\u003cp\u003ePull-up resistors need to be fitted to the SDA and SCL pins on each channel. We recommend using a value of between 2.2K and 10K for the pull-up resistors.\u003c\/p\u003e\n\u003cp\u003eThe pinout for each channel matches the first 6 pins on the Raspberry Pi GPIO connector with 3.3V, 5V, Ground, SDA and SCL.\u003c\/p\u003e\n\u003cp\u003eThe I2C switch supports clock frequencies up to 400KHz.\u003c\/p\u003e\n\u003cp\u003eThe reset pin on the PCA9546A is connected to GPIO 27 (pin 13) on the Raspberry Pi GPIO header allowing you to recover from a situation in which one of the downstream I2C buses is stuck in a low state.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4 I2C channels\u003c\/li\u003e\n\u003cli\u003eChannel selection via I2C-bus, in any combination\u003c\/li\u003e\n\u003cli\u003e3 address pins allowing up to 8 devices on the I2C-bus\u003c\/li\u003e\n\u003cli\u003eAllows voltage level translation between 2.7 V, 3.3 V and 5 V buses\u003c\/li\u003e\n\u003cli\u003e0 Hz to 400 kHz clock frequency\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eThe I2C Switch includes three address selection solder jumpers which can be bridged with solder to give you up to 8 different I\u003c\/span\u003e\u003csup\u003e2\u003c\/sup\u003e\u003cspan\u003eC addresses.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAssembly\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp\u003eThe I2C Switch is supplied with the 40 pin GPIO connector unsoldered. Before using the I2C Switch you will need to solder the 40 pin GPIO connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Ratings \u0026amp; Specifications\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHost I2C SDA\/SCL voltage - 3.3 V\u003c\/li\u003e\n\u003cli\u003eChannel I2C SDA\/SCL voltage - 2.7 V - 5V\u003c\/li\u003e\n\u003cli\u003eI2C port current - 25 mA\u003c\/li\u003e\n\u003cli\u003eMax Clock Frequency - 400KHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eResources:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\nCode Libraries (\u003cspan\u003ePython, C and C++ and Node JS)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eDatasheet\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABelectronics","offers":[{"title":"Default Title","offer_id":51616985121074,"sku":"ipi1787257880481","price":5.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/0289\/8482\/files\/i2c-switch_1.jpg?v=1787257885","url":"https:\/\/www.mapleborough.shop\/products\/i2c-switch","provider":"My Store","version":"1.0","type":"link"}