Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
The TXS has edge accelerators to allow high data rates. Apparently, your bus capacitance is so high that the accelerator cannot (dis)charge it completely.
Where did you measure these spikes? Are they visible only at the TXS pins, or also at the I²C devices?
I²C is a slow protocol and does not need edge accelerators. You could use a simpler translator like the LSF0102/PCA9306.
Similar to what Clemens' mentioned, this is a side effect of using the TXS0102 to drive signals across long cabling/ PCB traces. The TXS0102 uses one shot circuitry to speed up the rise times, but if the output capacitive load is too high, the one shot can time out prematurely as we see here.
