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TCA9803: Enhance I2C communication ability device consult

Part Number: TCA9803

Hi Team,

Do we have such products which can increase I2C communication ability to 1 meter? Pls help us here. Thanks.

B&R

Stanley

  • The I²C specification allows the capacitance of the bus to be up to 400 pF. (A 1 m trace typically has less than 200 pF.) This is also discussed in section 10.2.1.2 of the TCA9803 datasheet.

    If the capacitance is higher, or you want to use high speed, an I²C buffer like the TCA9803 will help by splitting the bus in two halves with lower capacitances.

  • Hi Stanley,

    Clemens is correct the TCA980x family is an I2C buffer that can split the bus in two separate bus capacitances. This will allow you to communicate with much longer traces. There are also many other I2C buffers that you can use. You can find them here.

    Best,

    Chris