SN65HVD231: Difference between SN65HVD231 and TCAN1044A-Q1

Hi Sophia,

Sophia Zhang said:

Question 1: Could you please tell me what's the detailed difference between SN65HVD231 and TCAN1044A-Q1, except for Vcc?

So first major difference is that the TCAN1044A-Q1 is a much newer part than the older generation of CAN devices bearing the "SN" device name. TCAN1044A is made with newer process technology, and therefore I would suspect that the electrical specifications are overall better. 

One of the main differences between the 1044 and SN65 device is the bus fault protection present on the 1044. TCAN1044A can withstand up to +/- 58V of voltage on the CAN bus or a maximum differential voltage (CANH - CANL) of +/- 45V. 

I may not get all of them, but it looks like there are a few feature differences between the two devices. TCAN1044A for example has undervoltage lockout conditions which puts the CAN device in a protected state if insufficient power is supplied to the VCC / VIO pins (dependent on if you are using the A or AV version). 

Both devices have thermal shutdown. 

TCAN1044 implements TXD dominant timeout. If there is a stuck condition on the TXD pin during normal mode, the device will cease communicating on the CAN bus in order to free up the CAN bus for further communication from other devices on the bus. I don't believe the SN65 has this feature. 

There are probably more characteristics that I am missing, but these are the majors ones I see when comparing the two datasheets. 

Sophia Zhang said:

Question 2: Could you please give me a comparison of SN65HVD231 and SIT65HVD230?  And what is our TI benefits and disadvantages?

This is just a quick table that I came up with. Notable mentions are the standby mode current and the ambient temperature Ta capabilities between the two devices. 

Please let me know if you need additional information.

Regards,

TYler