it is dependent on the thickness of gate oxide,
thumb of rule: 0.8V/nm for gate oxide
normally use 1.8V device can be overdrived to 1.8*1.3=2.34 with safe, but less life < 3yrs.. perhaps,
but overdrived to 2.5V is dangerous
it is dependent on the thickness of gate oxide,
thumb of rule: 0.8V/nm for gate oxide
normally use 1.8V device can be overdrived to 1.8*1.3=2.34 with safe, but less life < 3yrs.. perhaps,
but o ...
If you want to use the MOS-cap as the storage cap and the voltage will be much more than 1.8v. Suggest you use 3.3v MOS as the cap. Sure, teh 3.3v MOS cap will be smaller than 1.8v cap.