What will happen if we replace nmos with pmos and pmos with nmos in cmos circuit?

[gurpreet.singh]

Hi
In cmos circuit If we replace nmose with pmos and pmos with nmos then what will happen??

 

[ramanav]

Re: regarding CMOS

it will be acting as a week buffer.
Its characteristics will be linear.

 

[deh_fuhrer]

Re: regarding CMOS

Its output swing reduces to |VTP| <=VOUT<= VDD-VTN....

 

[ramanav]

Re: regarding CMOS

If Pmos is connected down and Nmos on top ,
For input logic 0:
Pmos ON and Nmos OFF => output is grounded or logic zero (it will not be zero but Vtp)
For input logic 1:
Pmos OFF and Nmos ON => output is connected to VDD or logic one (it will not be ONE but VDD-Vtp)

 

[badola]

Re: regarding CMOS

ramanav i think the drop in case when pmos is off and nmos is on will be Vdd - Vtn...correct me if i am wrong..

 

[gurpreet.singh]

Re: regarding CMOS

Yes Badola u r absolutely right that drop shold be Vdd-Vtn only.