CD74AC08: Differences between CD74AC08M and CD74AC08M96

Part Number: CD74AC08

Tool/software:

Hello!

We currently use CD74AC08M. Which is now OBS. CD74AC08M96 seems to be active. What if anything are the differences between these parts? Also, what is the lead finish? I see multiple finishes are listed, is it possible to specify which one we will receive? Thank you!