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    Re: PCF8575 Does not work with my code....

    The ULN2803 needs at least 0.35mA, so practically 8575 cannot drive it with enough current.



    Seems the datasheet has many errors...

    Ioannis
  2. Replies
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    Re: PCF8575 Does not work with my code....

    Correct! But what about the charts on page 7?

    Ioannis
  3. Replies
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    5,695

    Re: PCF8575 Does not work with my code....

    It makes no sense. From datasheet, page 7 and figures 6 and 10, seems that the 8575 can drive more than 25mA.

    I am sure that ULN needs much less than that. Maybe you have a faulty chip? Be very...
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