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I2C switch

13,95 /11,53 excl. VAT

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Article number: AB1012 Categories:

Description I2C Switch

The I2C Switch from AB Electronics is a 4-channel bi-directional I2C switch controlled via the I2C bus† It is designed for use on Raspberry Pi boards with a 40-pin GPIO connector. The I2C Switch can be firmly attached to the Raspberry Pi be mounted using the mounting kit.
The I2C Switch is based on a PCA9546A controller from NXP. The PCA9546A provides quad bidirectional communication between the I2C port on the Raspberry Pi and all connected I2C devices† Each channel can be turned on or off individually. This allows you to connect I2C devices that share the same address on the Raspberry Pi connect.
The I2C switch is powered via the Raspberry Pi using the GPIO port. Thanks to the extended GPIO pins, you can stack the I2C Switch with other expansion cards.
Each channel operates at 2,7V - 3,3V or 5V. This allows you to connect I2C devices with different voltages to the Raspberry Pi.
Pull-up resistors must be mounted on the SDA and SCL pins of each channel. It is best to use a value between 2,2K and 10K for the pull-up resistors.
The I2C switch supports clock frequencies up to 400 KHz.

Features I2C Switch

  • 4 I2C channels
  • Channel selection via I2C bus, in any combination
  • 3 address pins for up to 8 devices on the I2C bus
  • Allows voltage level translation between 2,7V, 3,3V and 5V . buses
  • 0 Hz to 400 kHz clock frequency
  • Mounting holes for use with the AB Electronics UK mounting kit (available separately)
  • Soldering is required
  • Suitable for eg Raspberry Pi 3, 4 and Zero boards

Additional information

RPI ACCE Type

Raspberry Pi

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