Because the CAN protocol is used in industrial environments, transceivers need to be robust to withstand large common mode voltage swings and electrostatic discharge. Large voltage swings during fault conditions can also damage the transceivers, so they need to be able to tolerate high voltages during those faults, without failing catastrophically. Many applications require a low voltage interface with some of the newer microcontrollers that operate off of these lower voltages. Of course, systems are always looking to lower power consumption, especially during down time so building a power saving mode into the transceiver is helpful. Finally, line reflections and EMI can impact the reliability of communications, so having a way to operate with a lower slew rate can help improve communications performance.