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HDC1080: Multiple of the same devices on I2C bus

Prodigy 70 points

Replies: 3

Views: 28

Part Number: HDC1080

I have an application where multiple HDC1080 humidity/temperature sensors are to be used on the same I2C bus.

Is it acceptable to simply remove power from the other devices (SDA,SCL remain connected to all) while leaving one device powered to communicate on the bus?

Thank you,

Patrick

  • Patrick - 

    i just tested two HDC1080s on same bus and was able to only remove power to use individual devices in this manner. 

    BR-

    Josh

  • In reply to Josh Wyatt:

    I am concerned that the device may suffer damage over time as the unit will have voltages applied to the scl/sda pins with no power

    Patrick

  • In reply to user275052:

    Patrick -

    these are open drain, i think its OK

    BR-

    Josh

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