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SN74AVC1T45: Operating Power Supply Condition

Part Number: SN74AVC1T45

customer application shows VCCa and VCCb connected to the same power supply. 

according to data sheet,  power supply considerations are as follows: 

1) Connect ground before any supply voltage is applied. 2. Power up VCCA. 3. VCCB can be ramped up along with or after VCCA

Not sure yet why both are tied to same supply, but given both VCCa and VCCb would start/ramp together, then my opinion is that this should meet the conditions. 

Are there any other functional/operational conditions I am overlooking with such a use-case?