TCAN1042V-Q1: about terminal capacitance of RXD pin and condensation

Toshi-san,

I have some answers, and I need a little clarification.

1. By terminal capacitance, are you referring to the capacitance of RXD with respect to GND?

2. Which terminals? RXD and it's neighboring pins? Or all of the pins? If RXD is shorted to VCC through 10kΩ, nothing detrimental will happen, your RXD will just be held to VCC. Let me know if you would like the information for all pins.

3. 

Here is an image of the equivalent input and output circuits. The passive values may be slightly different, but the circuits shown are correct.

Regards,

Toshi-san,

Thank you for the clarification!

1. I will have to dig for this, we don't characterize this data typically. 
2. Short circuit conditions

   1. 1. VIO-CANL: This will drive your CANL to the voltage applied at VIO, assuming your voltage source can deliver the current. This will not allow communication to happen on the bus, but no damage will occur to the device. This will also depend on what the CAN bus is doing at the time, while the device is powered up, the CAN bus pins have ~25k input resistance at the recessive level. With 10k in between, a voltage divider will be created as well. It will ultimately depend on the output current capability of whatever is driving VIO. If VIO is left unconnected, then the CANL pin can drive the VIO pin to whatever the CANL voltage level is.
      2. CANH-CANL: If the CAN bus shorts together with 10k in between, there won't be any damage, but the voltage levels on the CANL pin will follow whatever is on the CANH pin.
      3. CANH-STB: If these get shorted together with 10k, it could cause your device to go into Standby mode, because CANH will drive the logic level of the STB pin high. Again, no damage will occur, but it will change the state of your device

Can I ask why you are looking for the capacitance of the RXD pin and the shorting conditions of all of these pins?

Regards,