* SPICE netlist
M1 Vdd A N001 N001 PMOS L=0.18u W=1.0e-4
M2 N001 B N002 N002 PMOS L=0.18u W=1.0e-4
M3 N002 A Vss Vss NMOS L=0.18u W=1.0e-4
M4 N002 B Vss Vss NMOS L=0.18u W=1.0e-4
M5 Y N002 Vss Vss NMOS L=0.18u W=1.0e-4
M6 Vdd N002 Y Y PMOS L=0.18u W=1.0e-4
+Level = 49
+Lint = 4.e-08 Tox = 4.e-09
+Vth0 = 0.3999 Rdsw = 250
+lmin=1.8e-7 lmax=1.8e-7 wmin=1.8e-7 wmax=1.0e-4 Tref=27.0 version =3.1
+Xj= 6.0000000E-08 Nch= 5.9500000E+17
+lln= 1.0000000 lwn= 1.0000000 wln= 0.00
+wwn= 0.00 ll= 0.00
+lw= 0.00 lwl= 0.00 wint= 0.00
+wl= 0.00 ww= 0.00 wwl= 0.00
+Mobmod= 1 binunit= 2 xl= 0
+xw= 0 binflag= 0
+Dwg= 0.00 Dwb= 0.00
+K1= 0.5613000 K2= 1.0000000E-02
+K3= 0.00 Dvt0= 8.0000000 Dvt1= 0.7500000
+Dvt2= 8.0000000E-03 Dvt0w= 0.00 Dvt1w= 0.00
+Dvt2w= 0.00 Nlx= 1.6500000E-07 W0= 0.00
+K3b= 0.00 Ngate= 5.0000000E+20
+Vsat= 1.3800000E+05 Ua= -7.0000000E-10 Ub= 3.5000000E-18
+Uc= -5.2500000E-11 Prwb= 0.00
+Prwg= 0.00 Wr= 1.0000000 U0= 3.5000000E-02
+A0= 1.1000000 Keta= 4.0000000E-02 A1= 0.00
+A2= 1.0000000 Ags= -1.0000000E-02 B0= 0.00
+B1= 0.00
+Voff= -0.12350000 NFactor= 0.9000000 Cit= 0.00
+Cdsc= 0.00 Cdscb= 0.00 Cdscd= 0.00
+Eta0= 0.2200000 Etab= 0.00 Dsub= 0.8000000
+Pclm= 5.0000000E-02 Pdiblc1= 1.2000000E-02 Pdiblc2= 7.5000000E-03
+Pdiblcb= -1.3500000E-02 Drout= 1.7999999E-02 Pscbe1= 8.6600000E+08
+Pscbe2= 1.0000000E-20 Pvag= -0.2800000 Delta= 1.0000000E-02
+Alpha0= 0.00 Beta0= 30.0000000
+kt1= -0.3700000 kt2= -4.0000000E-02 At= 5.5000000E+04
+Ute= -1.4800000 Ua1= 9.5829000E-10 Ub1= -3.3473000E-19
+Uc1= 0.00 Kt1l= 4.0000000E-09 Prt= 0.00
+Cj= 0.00365 Mj= 0.54 Pb= 0.982
+Cjsw= 7.9E-10 Mjsw= 0.31 Php= 0.841
+Cta= 0 Ctp= 0 Pta= 0
+Ptp= 0 JS=1.50E-08 JSW=2.50E-13
+N=1.0 Xti=3.0 Cgdo=2.786E-10
+Cgso=2.786E-10 Cgbo=0.0E+00 Capmod= 2
+NQSMOD= 0 Elm= 5 Xpart= 1
+Cgsl= 1.6E-10 Cgdl= 1.6E-10 Ckappa= 2.886
+Cf= 1.069e-10 Clc= 0.0000001 Cle= 0.6
+Dlc= 4E-08 Dwc= 0 Vfbcv= -1
+Level = 49
+Lint = 3.e-08 Tox = 4.2e-09
+Vth0 = -0.42 Rdsw = 450
+lmin=1.8e-7 lmax=1.8e-7 wmin=1.8e-7 wmax=1.0e-4 Tref=27.0 version =3.1
+Xj= 7.0000000E-08 Nch= 5.9200000E+17
+lln= 1.0000000 lwn= 1.0000000 wln= 0.00
+wwn= 0.00 ll= 0.00
+lw= 0.00 lwl= 0.00 wint= 0.00
+wl= 0.00 ww= 0.00 wwl= 0.00
+Mobmod= 1 binunit= 2 xl= 0.00
+xw= 0.00
+binflag= 0 Dwg= 0.00 Dwb= 0.00
+ACM= 0 ldif=0.00 hdif=0.00
+rsh= 0 rd= 0 rs= 0
+rsc= 0 rdc= 0
+K1= 0.5560000 K2= 0.00
+K3= 0.00 Dvt0= 11.2000000 Dvt1= 0.7200000
+Dvt2= -1.0000000E-02 Dvt0w= 0.00 Dvt1w= 0.00
+Dvt2w= 0.00 Nlx= 9.5000000E-08 W0= 0.00
+K3b= 0.00 Ngate= 5.0000000E+20
+Vsat= 1.0500000E+05 Ua= -1.2000000E-10 Ub= 1.0000000E-18
+Uc= -2.9999999E-11 Prwb= 0.00
+Prwg= 0.00 Wr= 1.0000000 U0= 8.0000000E-03
+A0= 2.1199999 Keta= 2.9999999E-02 A1= 0.00
+A2= 0.4000000 Ags= -0.1000000 B0= 0.00
+B1= 0.00
+Voff= -6.40000000E-02 NFactor= 1.4000000 Cit= 0.00
+Cdsc= 0.00 Cdscb= 0.00 Cdscd= 0.00
+Eta0= 8.5000000 Etab= 0.00 Dsub= 2.8000000
+Pclm= 2.0000000 Pdiblc1= 0.1200000 Pdiblc2= 8.0000000E-05
+Pdiblcb= 0.1450000 Drout= 5.0000000E-02 Pscbe1= 1.0000000E-20
+Pscbe2= 1.0000000E-20 Pvag= -6.0000000E-02 Delta= 1.0000000E-02
+Alpha0= 0.00 Beta0= 30.0000000
+kt1= -0.3700000 kt2= -4.0000000E-02 At= 5.5000000E+04
+Ute= -1.4800000 Ua1= 9.5829000E-10 Ub1= -3.3473000E-19
+Uc1= 0.00 Kt1l= 4.0000000E-09 Prt= 0.00
+Cj= 0.00138 Mj= 1.05 Pb= 1.24
+Cjsw= 1.44E-09 Mjsw= 0.43 Php= 0.841
+Cta= 0.00093 Ctp= 0 Pta= 0.00153
+Ptp= 0 JS=1.50E-08 JSW=2.50E-13
+N=1.0 Xti=3.0 Cgdo=2.786E-10
+Cgso=2.786E-10 Cgbo=0.0E+00 Capmod= 2
+NQSMOD= 0 Elm= 5 Xpart= 1
+Cgsl= 1.6E-10 Cgdl= 1.6E-10 Ckappa= 2.886
+Cf= 1.058e-10 Clc= 0.0000001 Cle= 0.6
+Dlc= 3E-08 Dwc= 0 Vfbcv= -1

* LTspice schematic (.asc)
Version 4
SHEET 1 640 688
WIRE -128 -264 -128 -344
WIRE -176 -184 -224 -184
WIRE 224 -136 224 -184
WIRE -128 -104 -128 -168
WIRE 176 -56 112 -56
WIRE -176 -24 -224 -24
WIRE 224 24 224 -40
WIRE 320 24 224 24
WIRE -128 56 -128 -8
WIRE 112 56 112 -56
WIRE 112 56 -128 56
WIRE 224 88 224 24
WIRE -128 120 -128 56
WIRE -128 120 -224 120
WIRE 32 120 -128 120
WIRE 112 168 112 56
WIRE 176 168 112 168
WIRE -224 184 -224 120
WIRE 32 184 32 120
WIRE 224 232 224 184
WIRE -272 264 -320 264
WIRE -16 264 -64 264
WIRE -224 344 -224 280
WIRE 32 344 32 280
FLAG -128 -344 Vdd
FLAG -224 -184 A
FLAG -320 264 A
FLAG -224 -24 B
FLAG -64 264 B
FLAG 320 24 Y
FLAG 224 -184 Vdd
FLAG -224 344 Vss
FLAG 32 344 Vss
FLAG 224 232 Vss
SYMBOL pmos -176 -264 R0
SYMATTR InstName M1
SYMATTR Value2 L=0.18u W=1.0e-4
SYMBOL pmos -176 -104 R0
SYMATTR InstName M2
SYMATTR Value2 L=0.18u W=1.0e-4
SYMBOL nmos -272 184 R0
SYMATTR InstName M3
SYMATTR Value2 L=0.18u W=1.0e-4
SYMBOL nmos -16 184 R0
SYMATTR InstName M4
SYMATTR Value2 L=0.18u W=1.0e-4
SYMBOL nmos 176 88 R0
SYMATTR InstName M5
SYMATTR Value2 L=0.18u W=1.0e-4
SYMBOL pmos 176 -136 R0
SYMATTR InstName M6
SYMATTR Value2 L=0.18u W=1.0e-4