Question:
The datasheet specifically shows in 'Figure 1. Typical EMC Protection Circuitry' a component network applied to the 24V supply for EMC. But when powering from 5V the 24V supply must be left unconnected. How then do you connect the EMC filter network components?
Answer:
The EMC filter network is not needed when powering from 5VOUT. In this case the VCC24 pin should be left unconnected (floating). The purpose of the VCC24 supply input network is to protect the MAX31913 against transients on the 24V line, which in this application will not be connected to the MAX31913.