shift register

Thread Starter


Joined Jul 26, 2005
i have a register question,pic a is my circuit, input is 80mhz(all the nmos width=0.75um length=0.18um,pmos width=0.5um length=0.18um), clock is 80mhz, pic a is same as pic b,but my result is not the same as pic d, doesn't like the genaral result, Q2 and Q1 is the same in my circuit, so do someone know what wrong in my circuit, please tell me, thank.