Isolated CAN transceiver with 70V bus fault protection

19th November 2018
Alex Lynn


The ISO1042-Q1 device from Texas Instruments is a galvanically-isolated controller area network (CAN) transceiver that meets the specifications of the ISO11898-2 (2016) standard. The ISO1042-Q1 device offers ±70V DC bus fault protection and ±30V common-mode voltage range. 

The device supports up to 5Mbps data rate in CAN FD mode allowing much faster transfer of payload compared to classic CAN. This device uses a silicon dioxide (SiO2) insulation barrier with a withstand voltage of 5,000 VRMS and a working voltage of 1,060 VRMS. Electromagnetic compatibility has been significantly enhanced to enable system-level ESD, EFT, surge, and emissions compliance. 

Used in conjunction with isolated power supplies, the device protects against high voltage, and prevents noise currents from the bus from entering the local ground. The ISO1042-Q1 device is available for both basic and reinforced isolation (see Reinforced and Basic Isolation Options). 

The ISO1042-Q1 device supports a wide ambient temperature range of -40 to +125°C. The device is available in the SOIC-16 (DW) package and a smaller SOIC-8 (DWV) package. 

To find out more, click here.

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