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Unpowered ADM3053

Question asked by SPS on Feb 23, 2012
Latest reply on Jun 8, 2012 by deguy

In the features list of the ADM3053 on the first page of the datasheet, it is mentionned that unpowered nodes do not disturb the bus but in table 10, the bus state is indeterminate with Vio On, Vcc Off and TxD Low which to me means that it can force a dominant state on the bus.


In my system, I need to unpower both the Vio and Vcc nodes for energy saving without disturbing the bus. Is it possible with the ADM3053 ?


What is the bus state in the following conditions ?

  • Vio OFF, VCC OFF and Txd HIGH or LOW
  • Vio ON, VCC OFF and TxD HIGH