In addition to the visual confirmation of normal transceiver operation, all transceivers were tested on an automatic test system (ATE) for parametric performance. The pass criterion required that a device did not show any parametric shifts; the ATE test confirmed that none of the transceivers showed parametric shifts. Thus, the RAA78815x transceivers successfully passed all EFT tests with up to 5 kV test voltage, the highest possible test voltage of the AXOS-5 test system. These test results place the RAA78815x transceivers into the highest special test level category of IEC 61000-4-4, which makes them one of the industry’s most immune transceivers against EFT assaults.