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SN74LVC8T245: Question about VCCA and signal inputs

Part Number: SN74LVC8T245
Other Parts Discussed in Thread: SN74LV541AT, CD74ACT541, SN74AHCT541, , SN74AHCT245, SN74ACT245, SN74LVCC3245A

Hello team,

My customer wants to design two use-cases with one schematic. 

Is it possible to use below two cases with VCCA: 5V / VCCB: 5V?

In datasheet, V_IH is 0.7*VCCA, so it is difficult to use for 3.3 input. Is it right?

The first case: 

The second case:

Best Regards,