ISOW7841: how to implement CAN Interface with Digital isolator based

Hi Yaseen,

Thank you for reaching out.
Since ISOW7841 is only a digital isolator, it only accepts and outputs CMOS logic digital signals. It can be used with a CAN transceiver to achieve an isolated CAN solution. Please refer to TIDA-00893 reference design that implements isolated CAN solution using ISOW7841 and a CAN transceiver.

I have also provided a link to an application note describing on how to choose an isolated CAN solution and another link to CAN transceivers page on TI website.

https://www.ti.com/tool/TIDA-00893

https://www.ti.com/lit/pdf/slla386

https://www.ti.com/interface/can-lin-transceivers-sbcs/overview.html

ISOW7841 is our first generation device with integrated DC-DC converter, we now have our second generation device, the ISOW7741. I would recommend you to use ISOW7741 which offers significant improvement overall specifically on radiated emissions performance. Thanks.

https://www.ti.com/product/ISOW7741

Regards,
Koteshwar Rao

Hi Yaseen,

I believe TCAN1042 is only a transceiver working in the physical layer and doesn't facilitate any software related protocols. Protocols need to be implemented in the MCUs working in the MAC layer.
For a more accurate answer on CAN transceivers, please post your CAN transceiver question in "Interface Forum" at the link below.

https://e2e.ti.com/support/interface/f/interface-forum

Regards,
Koteshwar Rao