Hello,
we have used the TCA9517-Q1 with VCCA<VCCB but now we have some design modification for which we need to use TCA9517-Q1 in VCCA > VCCB
On website we found that for this part there is no power supply restrictions are mentioned. Also in Datasheet some electrical data is mentioned for VCCA>VCCB.
we also checked some of previous Q/A from the TI e2eSupport related to this but in some cases it is recommended to use with VCCA>VCCB and in some case it is not suggested like that