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SN65HVD256: 3.3 volt replacement for 5 volt CAN bus transceiver

Mark Kastner
Prodigy 20 points
Part Number: SN65HVD256
Other Parts Discussed in Thread: SN65HVD230, TCAN330

We've been using the SN65HVD256D in our 5 volt CAN bus designs, but now need a 3.3 CAN bus transceiver.  When looking at potential replacements:

https://www.ti.com/interface/can-transceivers/products.html#0=3%20to%203.6&

I see that there are 76 potential replacements (!).

Unfortunately, there don't seem to be a lot of selection criteria to help filter down the selection.  I'm hoping to pick a device similar to the SN65HVD256D (including the same footprint), but which will operate at 3.3 volts.  Can you help us select the best or maybe a few potential candidates?

Thanks,

Mark

  • 0
    Guru 244370 points

    The SN65HVD256 has a level shifter supply on pin 5 and silent mode enable in pin 8. Do you actually use these features?

  • 0
    TI__Mastermind 48215 points

    Hi Mark, 

    Thanks for bringing your question to E2E. 

    The most similar 3.3V supplied transceiver would be the SN65HVD230 family. This is the similarly old generation of transceivers that has the same basic pinout as SN65HVD256 for the CAN signals, but with a few different options for pins 5 and 8. Depending on your use case, one of the devices from this family may be pin-compatible with your existing schematic (with an updated Vcc supply of course). I believe this is why Clemens is asking about the SN65HVD256 features you are currently using. 

    The newer TCAN330 family has similar pinout options while providing other advantages, namely an higher absolute maximum voltage rating, data rate capability, and temperature specifications closer to that of the SN65HVD256. I would recommend this family for newer designs if possible. 

    Each of these 3.3V transceiver families share one datasheet so you should be able to easily browse the pinout options between these two documents. Let me know if you have any questions on these devices are any specifications 

    Regards, 
    Eric Schott