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SN74AVC4T774: U19 Ref.des. If the VCCA is 0V and VCCB is 1.8V and if ~OE is at 1.8V will the device isolate the activity in output

RAMNATH ANANTH KINI U
Prodigy 30 points
Part Number: SN74AVC4T774

Tool/software:

While programming through Dediprog at J12 header, when the system is in OFF condition the VCCA of U19 is at 0V, VCCB at 1.8V (Powered via Dediprog J12 header) and the /OE is 1.8V(since Dediprog pulls SPI_PROG_L net LOW during programming). In this case port B side of U19 the signals are active due to Dediprog programming; Is Port A isolated from port B in this case since VCCA is 0V?