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TFP401PZPEVM: Issue in -40 deg

Part Number: TFP401PZPEVM
Other Parts Discussed in Thread: TFP401

Hi Team,

      I am using TFP401AMPZPEP IC. Actually what is the issue we are facing right now is, in (+25) deg temperature it is working but in (-40) deg it is not working. Not working means, in first power on it is not working if i kept in  powered on for 1 or 2 minutes after power off and on means it will work. This is the issue we are facing.

 In non working time what are the signals getting low,

  ODCK - it is sine wave, some low is there.

  DE - it should be high. it is not complete high, some low is there

  DATA LINES - not proper.