The TI Reference Design “Interface to a 5V BiSS Position Encoder” implements a hardware interface solution based on the BiSS standard for position or rotary encoders supporting both BiSS Point-to-Point and BiSS Bus configurations. The building blocks include the power supply for a 5V BiSS encoder and robust full-duplex RS485 transceivers, including line termination and EMC protection. An auxiliary power supply and logic level interface with adjustable I/O voltage level is provided to connect to subsequent BiSS (or SSI) Master. The design is fully tested to meet EMC immunity requirements for ESD, Fast Transient Burst and Surge according to IEC61800-3.