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<-- Previous Next -- > TOPIC: XOR gate implimentation using CMOS
Posted by: ashishengr     5/2/2005 2:35:24 AM     Category: CMOS
Questions posted: 3         Comments Posted: 0

 hi 2 all

 plz suggest me how 2 impliment EXOR gate using CMOS in VLSI. also post the logical diagram of it.

 ashish

Posted by: Venkateshr     5/3/2005 5:18:24 AM
Comments Posted:86       Questions Posted:1

Hi,

  using complementary cmos u need 12 dev.but by using tx gates as jay said u can realize it using
2+2+2+2=8  dev.
!A---Tx(B to nmos and !b to pmos in tx gate)----| op
A---Tx(!B to nmos and b to pmos in tx gate)-----|

   


Posted by: jay_bits     5/3/2005 1:19:30 AM
Comments Posted:6       Questions Posted:5

I think using Transmission gate we can realize it..
in that case it'll require minimum no of transistors.....



Posted by: sairam     5/2/2005 10:03:40 AM
Comments Posted:5       Questions Posted:1

hai,
    two ways to implement x -or gate

first through : not(a)b + not(b) a
it requires 12 cmos transistors


but through only nand gates
it requires 4 nand gates
 it requires 16 mos transistors




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