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Controller Area Network (CAN) is a serial communication protocol, which supports distributed real-time control and multiplexing with a high safety level. Typical applications of CAN-based networks can be found in automotive and industrial environments.

The AMIS-42700 dual-CAN transceiver is the interface between up to two physical bus lines and the protocol controller and will be used for serial data interchange between different electronic units at more than one bus line. It can be used for both 12 V and 24 V systems.

The circuit consists of following blocks:

• Two differential line transmitters
• Two differential line receivers
• Interface to the CAN protocol handler
• Interface to expand the number of CAN networks
• Logic block including repeater function and the feedback suppression
• Thermal shutdown circuit (TSD)
• Short to battery treatment circuit

Due to the wide common-mode voltage range of the receiver inputs, the AMIS-42700 is able to reach outstanding levels of EMS. Similarly, extremely low EME is achieved by the excellent matching of the output signals.