Question
What is the difference between the 2 USB isolation devices, ADUM4160/ADUM3160
Answer
There are two differences, insulation rating and operating power supply range.
ADUM3160: Insulation Rating : 2.5kV rms , power supply: 4.0 V to 5.5 V
operation
ADUM4160: Insulation Rating : 5kV rms , power supply: 3.0 V to 5.5 V operation