Query regarding unknown component
Googling 212B does not tell us anything really except that it appears in connection to things. 

So if I can narrow down the manufacturer it will be a start, there is a logo on the chip I did not recognize so lets see what it could be. I found the logo from this very useful answer containing a ton of manufacturer logos. 

And feeding Google the name Siliconix and 212B I get a good result, I suspect it is a Vishay Siliconix DG212B Improved Quad CMOS Analog Switch.

The datasheet confirms 16 pins, so that's the best confirmation i got without actually having the component in my hand to measure the hopefully not broken part.