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'1 inverters as gates
.gen freq=1k offset=2.5 init=2.5 ampl=2.5
Vdd 8 0 dc 5.
V1 1 0 generator( 1. )
U2 2 1 mos inv
.model mos logic ( delay= 100n rise= 100n fall= 100n rs= 100. rw= 1.G
+ thh= 0.6 thl= 0.4 mr= 200000. mf= 200000. over=10k vmax= 5. vmin= 0. )
.subckt mosinv1 2 3
Vdd 1 0 dc 5.
M1 2 3 0 0 nmos l= 100.u w= 100.u nrd= 1. nrs= 1.
M2 2 3 1 1 pmos l= 100.u w= 100.u nrd= 1. nrs= 1.
.ends
*+ends mosinv1
.model nmos nmos ( level=2 vto= 0. gamma= 0. phi= 0.6 is= 10.E-15 pb= 0.8
+ cgso= 0. cgdo= 0. cgbo= 0. rsh= 0. cj= 0. mj= 0.5 cjsw= 0. mjsw= 0.33
+ tox= 100.n nfs= 0. tpg=1 ld= 0. uo= 600. neff= 1. fc= 0.5 delta= 0.
+)
*+(* vfb=-0.6 * kp= 20.71886u )
.model pmos pmos ( level=2 vto= 0. gamma= 0. phi= 0.6 is= 10.E-15 pb= 0.8
+ cgso= 0. cgdo= 0. cgbo= 0. rsh= 0. cj= 0. mj= 0.5 cjsw= 0. mjsw= 0.33
+ tox= 100.n nfs= 0. tpg=1 ld= 0. uo= 600. neff= 1. fc= 0.5 delta= 0.
+)
*+(* vfb=-0.6 * kp= 20.71886u )
.options itl4=50 mode=mixed diodeflags=4 nobypass method=euler transit=4
.print op v(1) l(1) v(2) l(2) iter(0) control(0)
.op
.print tran v(1) l(1) v(2) l(2) iter(0) control(0)
.alarm tran control(0)(1,9)
.tran 0 .01 50u trace rejected
.stat notime
.end
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