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Question about Microchip CAN transceiver

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aqua_life

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Hi,
I have a project to communicate with a CAN bus on a vehicle with bus speed 500 Kbits/s.
I am using Microchip PIC18F25K80 and the Microchip CAN transceiver MCP2551.
Now I found that Microchip also has CAN transceiver ATA6561.
Could I replace MCP2551 with ATA6561 ?
From the datasheet it seems that it will work correctly.
The ATA6561 is cheaper and easier to find on electronic shops.

If someone can confirm, I appreciate your help.
 

KlausST

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Hi,

I miss the links to the datasheets.

Do you expect pin compatibility, power consumption compatibility, functional (give limits) compatibility, timing compatibility, voltage levels...

Klaus
 

schmitt trigger

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Mostly similar, but there are a pair of pins with significantly different functionality.
 

aqua_life

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Thank you for your help.
I have already saw those different pins on the datasheet.
For all the rest of the compatibility I think I will try this chip on my real project and see how it goes.

Thanks
 

schmitt trigger

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Indeed, the CANbus physical layer and the TX, RX timing will be identical. Plus those pins are in the same place for both devices.
If you already have a board laid out for the previous IC, you may modify it with some deadbug components.
 

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