Other Parts Discussed in Thread: GD65232
Dear all:
My customer use GD75232 of their RS232 port ,they feedback an issue. attached is circuit.
Power sequency follow VDD-VSS-VCC-VIO(-12V to 12V to 5V), when +12 power on, Output PIN have a pulse up to 3V, and then down to
-12V(normal voltage) before signal input. we have a doubt that is it normal for this IC? How can we eliminate the pulse? please help to check,