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purpose of level shifter in vlsi

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geetharavi

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hello everyone,
Myself doing project in low power vlsi, i come across the concept of level shifter which is a bridge between low voltage domain and high voltage domain.
i got a doubt why we have to use level shifter for low to high conversion instead of using inverter and also what is the difference between voltage amplifier and level shifter.

Replies are welcome.......

Thanks in advance
 

Consider what's the minimal Vih level for a CMOS inverter residing in the high voltage domain.
 

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