ISL32458EIBZ

The maximum overvoltage tolerance for the RS-485 bus pins in the ISL3245xE transceivers is ±60V.

The purpose of the cable invert function in the ISL32457E and ISL32459E transceivers is to simplify the task of reversing the polarity of the Rx and Tx bus pins in case the cable is misconnected during installation. This function allows technicians to easily invert the polarity of the Rx input and Tx output pins by moving a jumper to change the state of the invert pin, without the need to rewire the connector, saving time and effort. The unique cable invert function ensures that the Rx full fail-safe function is maintained, even when the Rx polarity is reversed, unlike competing devices which may not provide the same level of reliability in such situations.

The common-mode voltage range for the ISL3245xE transceivers mentioned in the datasheet is up to ±20V, exceeding the RS-485 requirement.