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SN74AXC2T245-Q1: worst case internal power dissipation

Part Number: SN74AXC2T245-Q1

Team,

can you please advise how to calculate the internal power dissipation ?

My take is that it is made out of the intrinsic current drawn by the part + the current sank by the part in Voh.

from this table one can see a worst case of -12mA. hence 12mA internal power dissipation. multiplied by the number of channel added to the Iq which is in the order of uA so can be ignored in regard to mA.

is this correct ?

thanks