Other Parts Discussed in Thread: MSP430FR2433, TPS2388
We used a MCU(MSP430FR2433) which went through an isolator(ISO1541) to four TPS2388s and the waveform showed that some of the rising time and falling time didn't meet the spec of TPS2388.
We found that on the path from MCU to isolator, which are shown in CH1,CH2, both SDA and SCL rising time met the spec of TPS2388, but the falling time didn't.
Figures are shown as follows:
On the path from iso1541 to TPS2388, neither SDA nor SCL falling time met the spec of TPS2388. SDA met the rising time, but SCL didn't.
Figures are shown as follows: