* SPICE netlist
M1 N002 vin1 0 0 CMOSN l=180n w=2u
M2 vout vin2 N002 0 CMOSN l=180n w=2u
M3 N001 vin1 vout N001 CMOSP l=180n w=4u
M4 N001 vin2 vout N001 CMOSP l=180n w=4u
C1 vout 0 1f
V1 vin1 0 PULSE(0 1.8 0 0.1n 0.1n 1n 2n)
V2 vin2 0 PULSE(0 1.8 0 0.1n 0.1n 1n 4n)
Vdd N001 0 1.8
.tran 0 10n 0.01n 0.01n
+VERSION = 3.1 TNOM = 27 TOX = 4.1E-9
+XJ = 1E-7 NCH = 2.3549E17 VTH0 = 0.3662473
+K1 = 0.5864999 K2 = 1.127266E-3 K3 = 1E-3
+K3B = 0.0294061 W0 = 1E-7 NLX = 1.630684E-7
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 1.2064649 DVT1 = 0.4215486 DVT2 = 0.0197749
+U0 = 273.8094484 UA = -1.40499E-9 UB = 2.408323E-18
+UC = 6.504826E-11 VSAT = 1.355009E5 A0 = 2
+AGS = 0.4449958 B0 = 1.901075E-7 B1 = 4.99995E-6
+KETA = -0.0164863 A1 = 3.868769E-4 A2 = 0.4640272
+RDSW = 123.3376355 PRWG = 0.5 PRWB = -0.197728
+WR = 1 WINT = 0 LINT = 1.690044E-8
+XL = 0 XW = -1E-8 DWG = -4.728719E-9
+DWB = -2.452411E-9 VOFF = -0.0948017 NFACTOR = 2.1860065
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 2.230928E-3 ETAB = 6.028975E-5
+DSUB = 0.0145467 PCLM = 1.3822069 PDIBLC1 = 0.1762787
+PDIBLC2 = 1.66653E-3 PDIBLCB = -0.1 DROUT = 0.7694691
+PSCBE1 = 8.91287E9 PSCBE2 = 7.349607E-9 PVAG = 1.685917E-3
+DELTA = 0.01 RSH = 6.7 MOBMOD = 1
+PRT = 0 UTE = -1.5 KT1 = -0.11
+KT1L = 0 KT2 = 0.022 UA1 = 4.31E-9
+UB1 = -7.61E-18 UC1 = -5.6E-11 AT = 3.3E4
+WL = 0 WLN = 1 WW = 0
+WWN = 1 WWL = 0 LL = 0
+LLN = 1 LW = 0 LWN = 1
+LWL = 0 CAPMOD = 2 XPART = 0.5
+CGDO = 8.23E-10 CGSO = 8.23E-10 CGBO = 1E-12
+CJ = 9.466429E-4 PB = 0.8 MJ = 0.3820266
+CJSW = 2.608154E-10 PBSW = 0.8 MJSW = 0.102322
+CJSWG = 3.3E-10 PBSWG = 0.8 MJSWG = 0.102322
+CF = 0 PVTH0 = -2.199373E-3 PRDSW = -0.9368961
+PK2 = 1.593254E-3 WKETA = -2.880976E-3 LKETA = 7.165078E-3
+PU0 = 6.777519 PUA = 5.505418E-12 PUB = 8.84133E-25
+PVSAT = 2.006286E3 PETA0 = 1.003159E-4 PKETA = -6.759277E-3
+NOIMOD=2.0E+00 NOIA=1.3182567385564E+19
+NOIB=144543.977074592 NOIC=-1.24515784572817E-12 EF=0.92 EM=41000000 )
+VERSION = 3.1 TNOM = 27 TOX = 4.1E-9
+XJ = 1E-7 NCH = 4.1589E17 VTH0 = -0.3906012
+K1 = 0.5341312 K2 = 0.0395326 K3 = 0
+K3B = 7.4916211 W0 = 1E-6 NLX = 1.194072E-7
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 0.5060555 DVT1 = 0.2423835 DVT2 = 0.1
+U0 = 115.6894042 UA = 1.573746E-9 UB = 1.874308E-21
+UC = -1E-10 VSAT = 1.130982E5 A0 = 1.9976555
+AGS = 0.4186945 B0 = 1.949178E-7 B1 = 6.422908E-7
+KETA = 0.0166345 A1 = 0.4749146 A2 = 0.300003
+RDSW = 198.321294 PRWG = 0.5 PRWB = -0.4986647
+WR = 1 WINT = 0 LINT = 2.94454E-8
+XL = 0 XW = -1E-8 DWG = -2.798724E-8
+DWB = -4.83797E-10 VOFF = -0.095236 NFACTOR = 2
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 1.035504E-3 ETAB = -4.358398E-4
+DSUB = 1.816555E-3 PCLM = 1.3299898 PDIBLC1 = 1.766563E-3
+PDIBLC2 = 7.728395E-7 PDIBLCB = -1E-3 DROUT = 1.011891E-3
+PSCBE1 = 4.872184E10 PSCBE2 = 5E-10 PVAG = 0.0209921
+DELTA = 0.01 RSH = 7.7 MOBMOD = 1
+PRT = 0 UTE = -1.5 KT1 = -0.11
+KT1L = 0 KT2 = 0.022 UA1 = 4.31E-9
+UB1 = -7.61E-18 UC1 = -5.6E-11 AT = 3.3E4
+WL = 0 WLN = 1 WW = 0
+WWN = 1 WWL = 0 LL = 0
+LLN = 1 LW = 0 LWN = 1
+LWL = 0 CAPMOD = 2 XPART = 0.5
+CGDO = 6.35E-10 CGSO = 6.35E-10 CGBO = 1E-12
+CJ = 1.144521E-3 PB = 0.8468686 MJ = 0.4099522
+CJSW = 2.490749E-10 PBSW = 0.8769118 MJSW = 0.3478565
+CJSWG = 4.22E-10 PBSWG = 0.8769118 MJSWG = 0.3478565
+CF = 0 PVTH0 = 2.302018E-3 PRDSW = 9.0575312
+PK2 = 1.821914E-3 WKETA = 0.0222457 LKETA = -1.495872E-3
+PU0 = -1.5580645 PUA = -6.36889E-11 PUB = 1E-21
+PVSAT = 49.8420442 PETA0 = 2.827793E-5 PKETA = -2.536564E-3
+ NOIMOD=2.0E+00 NOIA=3.57456993317604E+18 NOIB=2500
+ NOIC=2.61260020285845E-11 EF=1.1388 EM=41000000 )

* LTspice schematic (.asc)
Version 4.1
SHEET 1 848 576
WIRE 424 -288 184 -288
WIRE 424 -256 424 -288
WIRE 72 -224 -8 -224
WIRE 184 -224 184 -288
WIRE 184 -224 72 -224
WIRE 296 -224 184 -224
WIRE 328 -224 296 -224
WIRE 72 -176 72 -224
WIRE 72 -176 -8 -176
WIRE 328 -176 328 -224
WIRE 328 -176 296 -176
WIRE -8 -64 -8 -128
WIRE 120 -64 -8 -64
WIRE 296 -64 296 -128
WIRE 296 -64 120 -64
WIRE 120 -32 120 -64
WIRE 408 -32 120 -32
WIRE 120 16 120 -32
WIRE 408 32 408 -32
WIRE 216 64 120 64
WIRE 120 176 120 112
WIRE 216 224 216 64
WIRE 216 224 120 224
WIRE 216 272 216 224
WIRE 216 272 120 272
WIRE 120 288 120 272
FLAG 120 288 0
FLAG -184 96 0
FLAG -424 144 0
FLAG 408 96 0
FLAG 424 -176 0
FLAG -184 16 vin1
IOPIN -96 -16 In
FLAG -56 -144 vin1
IOPIN 32 -176 In
FLAG 72 256 vin1
IOPIN 160 224 In
FLAG -424 64 vin2
IOPIN -336 32 In
FLAG 72 96 vin2
IOPIN 160 64 In
FLAG 248 -144 vin2
IOPIN 336 -176 In
FLAG 408 -32 vout
SYMBOL nmos4 72 176 R0
SYMATTR Value2 l=180n w=2u
SYMATTR InstName M1
SYMATTR Value CMOSN
SYMBOL nmos4 72 16 R0
SYMATTR Value2 l=180n w=2u
SYMATTR InstName M2
SYMATTR Value CMOSN
SYMBOL pmos4 -56 -224 R0
SYMATTR Value2 l=180n w=4u
SYMATTR InstName M3
SYMATTR Value CMOSP
SYMBOL pmos4 248 -224 R0
SYMATTR Value2 l=180n w=4u
SYMATTR InstName M4
SYMATTR Value CMOSP
SYMBOL cap 392 32 R0
SYMATTR Value 1f
SYMATTR InstName C1
SYMBOL voltage -184 0 R0
SYMATTR Value PULSE(0 1.8 0 0.1n 0.1n 1n 2n)
SYMATTR InstName V1
SYMBOL voltage -424 48 R0
SYMATTR Value PULSE(0 1.8 0 0.1n 0.1n 1n 4n)
SYMATTR InstName V2
SYMBOL voltage 424 -272 R0
SYMATTR InstName Vdd
SYMATTR Value 1.8