Thank you for your replies gentlemen. I knew there must be a way to run the DS2483 in mixed voltage system but that detail in the data sheet escaped me. I ignored the extra function of the SLPZ pin and tied it together with Vcc to 3v3, I have now re-wired the device as you suggested with 5v onto Vcc and 3v3 onto Slpz I have another problem to do with using alias names on this system but I'll do some more experiments before making a separate post about it. Best regards, David.
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