Other Parts Discussed in Thread: TCAN334, SN65HVD234, TCAN334G
Hello,
In our requirement specifications, we have to justify that we meet the following requirements for the can bus IO:
- Differential input capacitance < 170pF
- Common mode capacitance < 300pF
- Common mode input resistance balanced one compared to other at +- 3%
So we need to take into account the data from the SN65HVD234-Q1 as well as the capacitance introduced by the tracks, the EMI filters and the TVS we have implemented for EMI/EMC and lightning protection (design for helicopters).
For the two first, the data sheet provides typical information but we need to justify it over the whole temperature range of the device.
What would TI suggest as a safe WCA estimation ? 10% ? 20% ?
For the third one, there is no info on the dispersion between the H and L inputs, do you have such data ?
Best regards,
Clément