Combinational Logic Gates in CMOS

• Charge sharing in dynamic logic • Incorrect clocking in dynamic logic. Complementary CMOS PUN PDN in1 in2 in3 in1 in2 in3 V DD V SS F = G NMOS only PMOS only ... 3-Input NAND gate with Parasitic Capacitors in c out in b in a C p+load C a C b C c P1 P2 P3 R n=0.5R p= C a=C b=C c=C j=0.05pF C p=3C j=0.15pF C load=2C

  Charges, Capacitors, Sharing, Charge sharing