TXB0104: Series resistance on IO lines

What is the reason for those?

The TXB already has 4 kΩ series resistors. Making the outputs even weaker is unlikely to be an improvement in any situation.

We are planning to use this component in a ATEX product.

During the design evaluation, we got the remark that, as the ATEX does not rely on internal protection of components, we have to add an additional series resistor to limit current going through each IO.

I agree this is rather strange, but it's mandatory.

So we need to add theses resistors, but we need to also have a properly working TXB...

The idea is to put the smallest resistor possible, with a minimum value of about 300-400 Ohm

Regards

Increasing the resistance by 10 % is not going to hurt much, because the tolerances for on-die resistors are probably larger than that.

But your other question shows that the TXB will not work in any case.

Hey,

Are there any chances it will work or is this just meant to not be working ?

Regards

Giuliano