Other Parts Discussed in Thread: TXU0104, SN74LVC541A, SN74LXC8T245
We are currently using the TXS0108E to translate from 3V3 to 1V8 from B inputs to A outputs (VCCB=3V3, VCCa=1V8), unidirectional operation.
We are looking at a temporary design change in which one of the B inputs will be driven to 5V (VCCB still 3V3).
I note in the electrical specifications that during normal operation, the B input is only allowed to drive to VCCI, or VCCB, ie 3V3, even though the absolute maximum allowed voltage at B is 5.5V.
What is the consequence of applying a 5V signal to the B input when VCCB is 3V3? Is this allowed even though the datasheet specifies not to do it ?
Thanks.