I need help to recognize a dead component from a lab instrument control board. It is part of a TTL-serial interface, arguably a logic gate or some level shifter, in a TSSOP-14 package.
You can see the picture below: manufacturer is easy to recognize as Fairchild, now OnSemi, while part of the code has been blown up.
If you know the component, a good search engine or just have good hints, please help!