PROFIBUS is an open fieldbus standard that does not rely on equipment manufacturer. The data transmission speed is in the range of 9.6kbaud~12Mbaud based on master-slave communication. The bus interface is based on the adoption of high speed RS-485 devices. The MAX14770 is the Profibus interface IC, which can guarantee 2.1V driver output under a 5V power supply. With 3V power supply, the driver output which can be guaranteed by the MAX3485AE is as shown below:
If the level can be accepted, then the MAX3485AE can be used.