18 cascaded NMOS inverters
md1  3 2 0 0  modeld w=10u l=2u
ml1  1 1 3 0  modell w=2u l=2u
md2  4 3 0 0  modeld w=10u l=2u
ml2  1 1 4 0  modell w=2u l=2u
md3  5 4 0 0  modeld w=10u l=2u
ml3  1 1 5 0  modell w=2u l=2u
md4  6 5 0 0  modeld w=10u l=2u
ml4  1 1 6 0  modell w=2u l=2u
md5  7 6 0 0  modeld w=10u l=2u
ml5  1 1 7 0  modell w=2u l=2u
md6  8 7 0 0  modeld w=10u l=2u
ml6  1 1 8 0  modell w=2u l=2u
md7  9 8 0 0  modeld w=10u l=2u
ml7  1 1 9 0  modell w=2u l=2u
md8  10 9 0 0  modeld w=10u l=2u
ml8  1 1 10 0  modell w=2u l=2u
md9  11 10 0 0  modeld w=10u l=2u
ml9  1 1 11 0  modell w=2u l=2u
md10  12 11 0 0  modeld w=10u l=2u
ml10  1 1 12 0  modell w=2u l=2u
md11  13 12 0 0  modeld w=10u l=2u
ml11  1 1 13 0  modell w=2u l=2u
md12  14 13 0 0  modeld w=10u l=2u
ml12  1 1 14 0  modell w=2u l=2u
md13  15 14 0 0  modeld w=10u l=2u
ml13  1 1 15 0  modell w=2u l=2u
md14  16 15 0 0  modeld w=10u l=2u
ml14  1 1 16 0  modell w=2u l=2u
md15  17 16 0 0  modeld w=10u l=2u
ml15  1 1 17 0  modell w=2u l=2u
md16  18 17 0 0  modeld w=10u l=2u
ml16  1 1 18 0  modell w=2u l=2u
md17  19 18 0 0  modeld w=10u l=2u
ml17  1 1 19 0  modell w=2u l=2u
md18  20 19 0 0  modeld w=10u l=2u
ml18  1 1 20 0  modell w=2u l=2u
vdd 1 0 5
vin 2 0 .8
.MODEL MODELD NMOS (level=2 KP=28U VTO=0.7 LAMBDA=0.01 GAMMA=0.9 PHI=0.5 nfs=1e12)
.MODEL MODELL NMOS (level=2 KP=28U VTO=0.7 LAMBDA=0.01 GAMMA=0.9 PHI=0.5 nfs=1e12)
.PRINT OP iter(0) V(nodes)
.op
.end