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Maximum I2C Bus Length

Part Number: HDC1010

Hello,


I am using HDC1010 Temperature and humidity sensor.Altera FPGA board is communicating to the sensor.

I am able to read proper data of temperature and humidity upto 20 cm cable length.

If i use more than 20 cm cable length,i am not able to get proper data.

I have used different types of cables like CAT5,CAT6 etc.

What is the maximum length of cable that could be used to communicate between i2c device.

Regards,

sanjay