SN74LVC8T245: SN74LVC8T245PWR For Unused A and B port only Input can be pulldown or both input and output can be given with pulldown

Dear Team,

I am going to use SN74LVC8T245PWR buffer with the use of Direction pin I am going to change A to B or B to A direction I want both direction for my application. In that I have Two unused ports.For Unused A and B port only Input can be pulldown or both input and output can be given with pulldown,Because in datasheet unused pin input port tie to LOW or High logic is given for Output they didnt mentioned.In the case if iam going to use both direction means what i have to do for unsed pins of A and B ports?.