How are zener diodes placed between supply rails internally in MOSFET circuits at the I/O pads for protection against electrostatic discharge?

All QuestionsCategory: VLSI CMOSHow are zener diodes placed between supply rails internally in MOSFET circuits at the I/O pads for protection against electrostatic discharge?
Chetan Shidling Staff asked 5 years ago

Options:
 
a. Opposite to each other
b. Alternately
c. All of the above depending on the convenience of operation
d. Back to Back