cmos_kilburn

* MOS FET models
* from http://ltwiki.org/files/LTspiceIV/lib/sub/SwitchAna.Lib
.MODEL MN NMOS LEVEL=2 VTO=1.45 TOX=1000E-10 NSUB=4.7E16
+XJ=3U LD=2U UO=625 UCRIT=1E5 UEXP=0.45 UTRA=0.25 RD=15 RS=15
+NEFF=2.5 VMAX=1E6 CGBO=3E-10 CGDO=10E-10 CGSO=10E-10 CJSW=2F
+NFS=4E12 GAMMA=2.2 LAMBDA=0.02

.MODEL MP PMOS LEVEL=2 VTO=-1.5 TOX=1000E-10 NSUB=7.6E15
+XJ=3U LD=1.5U UO=225 UCRIT=3E5 UEXP=.5 UTRA=0.25 RD=15 RS=15
+NEFF=2.5 VMAX=1E5 CGBO=3E-10 CGDO=10E-10 CGSO=10E-10 CJSW=1F
+NFS=1E12 GAMMA=1.8 LAMBDA=0.02

.SUBCKT NOT 10  20  80 90
MP2 20 10 80  80 MP L=8U W=20U
MN1 20 10 90  90 MN L=8U W=10U
.ENDS

.SUBCKT NAND 10 20  30  80 90
MP1 30 10 80  80 MP L=8U W=20U
MP2 30 20 80  80 MP L=8U W=20U
MN1 40 10 30  90 MN L=8U W=20U
MN2 40 20 90  90 MN L=8U W=20U
.ENDS

.SUBCKT NOR 10 20  30  80 90
MP1 40 10 80  80 MP L=8U W=40U
MP2 40 20 30  80 MP L=8U W=40U
MN1 30 10 90  90 MN L=8U W=10U
MN2 30 20 90  90 MN L=8U W=10U
.ENDS

.SUBCKT AND_NOR 10 20 30  40  80 90
* (10 and 20) nor 30
MP1 50 10 80  80 MP L=8U W=40U
MP2 50 20 80  80 MP L=8U W=40U
MP3 50 30 40  80 MP L=8U W=40U
MN1 60 10 40  90 MN L=8U W=20U
MN2 60 20 90  90 MN L=8U W=20U
MN3 40 30 90  90 MN L=8U W=10U
.ENDS

.SUBCKT OR_NAND 10 20 30  40  80 90
* (10 or 20) nand 30
MP1 50 10 80  80 MP L=8U W=40U
MP2 50 20 40  80 MP L=8U W=40U
MP3 40 30 80  80 MP L=8U W=20U
MN1 40 10 60  90 MN L=8U W=20U
MN2 40 20 60  90 MN L=8U W=20U
MN3 60 30 90  90 MN L=8U W=20U
.ENDS

.SUBCKT KILBURN 10 20 30  40 50  80 90
* 10=A 20=B 30=Cin
* 40=Sum 50=Cout
* 80=Vdd 90=Vss

X_NAND 10 20  41  80 90 NAND
X_NOR  10 20  42  80 90 NOR
X_ORNAND 10 20 41  43  80 90 OR_NAND
X_ANDNOR 10 20 42  44  80 90 AND_NOR

XNOT 30  31  80 90 NOT

MPS1 43 31 40  80 MP L=8U W=40U
MNS1 43 30 40  90 MN L=8U W=20U
MPS2 44 30 40  80 MP L=8U W=40U
MNS2 44 31 40  90 MN L=8U W=20U

* C propagation
MPC1 50 43 30  80 MP L=8U W=40U
MNC1 50 44 30  90 MN L=8U W=20U
* set Cout to 1 when A==1 and B==1
MPC2 50 41 80  80 MP L=8U W=40U
* set Cout to 0 when A==0 and B==0
MNC2 50 42 90  90 MN L=8U W=20U
.ENDS

.SUBCKT ADDER 10 11  20 21  40 41 51  80 90
XADDER0 10 20  0  40 50  80 90 KILBURN
XADDER1 11 21 50  41 51  80 90 KILBURN
*XADDER0 10 20  1  40 50  80 90 KILBURN
*XADDER1 11 21 50  41 51  80 90 KILBURN
.ENDS

Vdd 1 0 15V

V10 10 0 PULSE 0V 15V  500ns 1ns 1ns  499ns 1000ns
V11 11 0 PULSE 0V 15V 1000ns 1ns 1ns  999ns 2000ns
V20 20 0 PULSE 0V 15V 2000ns 1ns 1ns 1999ns 4000ns
V21 21 0 PULSE 0V 15V 4000ns 1ns 1ns 3999ns 8000ns

XADDER 10 11  20 21  40 41 51  1 0 ADDER

.tran 1ns 8000ns

.print tran V(10) V(11) V(20) V(21) V(40) V(41) V(51)