* SPICE netlist
M1 VDD OUT N001 VDD PMOS l=0.18u w=5u
M2 N001 OUT 0 0 NMOS l=0.18u w=2.5u
V1 VDD 0 1.8
M3 VDD N001 N002 VDD PMOS l=0.18u w=5u
M4 N002 N001 0 0 NMOS l=0.18u w=2.5u
M5 VDD N002 N003 VDD PMOS l=0.18u w=5u
M6 N003 N002 0 0 NMOS l=0.18u w=2.5u
M7 VDD N003 N004 VDD PMOS l=0.18u w=5u
M8 N004 N003 0 0 NMOS l=0.18u w=2.5u
M9 VDD N004 N005 VDD PMOS l=0.18u w=5u
M10 N005 N004 0 0 NMOS l=0.18u w=2.5u
M11 VDD N005 N006 VDD PMOS l=0.18u w=5u
M12 N006 N005 0 0 NMOS l=0.18u w=2.5u
M13 VDD N006 OUT VDD PMOS l=0.18u w=5u
M14 OUT N006 0 0 NMOS l=0.18u w=2.5u
.tran 2u
+VERSION = 3.1 TNOM = 27 TOX = 4.1E-9
+XJ = 1E-7 NCH = 2.3549E17 VTH0 = 0.3725327
+K1 = 0.5933684 K2 = 2.050755E-3 K3 = 1E-3
+K3B = 4.5116437 W0 = 1E-7 NLX = 1.870758E-7
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 1.3621338 DVT1 = 0.3845146 DVT2 = 0.0577255
+U0 = 259.5304169 UA = -1.413292E-9 UB = 2.229959E-18
+UC = 4.525942E-11 VSAT = 9.411671E4 A0 = 1.7572867
+AGS = 0.3740333 B0 = -7.087476E-9 B1 = -1E-7
+KETA = -4.331915E-3 A1 = 0 A2 = 1
+RDSW = 111.886044 PRWG = 0.5 PRWB = -0.2
+WR = 1 WINT = 0 LINT = 1.701524E-8
+XL = 0 XW = -1E-8 DWG = -1.365589E-8
+DWB = 1.045599E-8 VOFF = -0.0927546 NFACTOR = 2.4494296
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 3.175457E-3 ETAB = 3.494694E-5
+DSUB = 0.0175288 PCLM = 0.7273497 PDIBLC1 = 0.1886574
+PDIBLC2 = 2.617136E-3 PDIBLCB = -0.1 DROUT = 0.7779462
+PSCBE1 = 3.488238E10 PSCBE2 = 6.841553E-10 PVAG = 0.0162206
+DELTA = 0.01 RSH = 6.5 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 = 8.53E-10 CGSO = 8.53E-10 CGBO = 1E-12
+CJ = 9.513993E-4 PB = 0.8 MJ = 0.3773625
+CJSW = 2.600853E-10 PBSW = 0.8157101 MJSW = 0.1004233
+CJSWG = 3.3E-10 PBSWG = 0.8157101 MJSWG = 0.1004233
+CF = 0 PVTH0 = -8.863347E-4 PRDSW = -3.6877287
+PK2 = 3.730349E-4 WKETA = 6.284186E-3 LKETA = -0.0106193
+PU0 = 16.6114107 PUA = 6.572846E-11 PUB = 0
+PVSAT = 1.112243E3 PETA0 = 1.002968E-4 PKETA = -2.906037E-3 )
+VERSION = 3.1 TNOM = 27 TOX = 4.1E-9
+XJ = 1E-7 NCH = 4.1589E17 VTH0 = -0.3823437
+K1 = 0.5722049 K2 = 0.0219717 K3 = 0.1576753
+K3B = 4.2763642 W0 = 1E-6 NLX = 1.104212E-7
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 0.6234839 DVT1 = 0.2479255 DVT2 = 0.1
+U0 = 109.4682454 UA = 1.31646E-9 UB = 1E-21
+UC = -1E-10 VSAT = 1.054892E5 A0 = 1.5796859
+AGS = 0.3115024 B0 = 4.729297E-7 B1 = 1.446715E-6
+KETA = 0.0298609 A1 = 0.3886886 A2 = 0.4010376
+RDSW = 199.1594405 PRWG = 0.5 PRWB = -0.4947034
+WR = 1 WINT = 0 LINT = 2.93948E-8
+XL = 0 XW = -1E-8 DWG = -1.998034E-8
+DWB = -2.481453E-9 VOFF = -0.0935653 NFACTOR = 2
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 3.515392E-4 ETAB = -4.804338E-4
+DSUB = 1.215087E-5 PCLM = 0.96422 PDIBLC1 = 3.026627E-3
+PDIBLC2 = -1E-5 PDIBLCB = -1E-3 DROUT = 1.117016E-4
+PSCBE1 = 7.999986E10 PSCBE2 = 8.271897E-10 PVAG = 0.0190118
+DELTA = 0.01 RSH = 8.1 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 = 7.82E-10 CGSO = 7.82E-10 CGBO = 1E-12
+CJ = 1.214428E-3 PB = 0.8461606 MJ = 0.4192076
+CJSW = 2.165642E-10 PBSW = 0.8 MJSW = 0.3202874
+CJSWG = 4.22E-10 PBSWG = 0.8 MJSWG = 0.3202874
+CF = 0 PVTH0 = 5.167913E-4 PRDSW = 9.5068821
+PK2 = 1.095907E-3 WKETA = 0.0133232 LKETA = -3.648003E-3
+PU0 = -1.0674346 PUA = -4.30826E-11 PUB = 1E-21
+PVSAT = 50 PETA0 = 1E-4 PKETA = -1.822724E-3 )

* LTspice schematic (.asc)
Version 4
SHEET 1 1408 512
WIRE 144 -256 32 -256
WIRE 144 -192 144 -256
WIRE 32 -160 32 -176
WIRE -368 -80 -576 -80
WIRE -160 -80 -368 -80
WIRE 32 -80 32 -160
WIRE 32 -80 -160 -80
WIRE 224 -80 32 -80
WIRE 432 -80 224 -80
WIRE 624 -80 432 -80
WIRE -576 -32 -576 -80
WIRE -544 -32 -576 -32
WIRE -368 -32 -368 -80
WIRE -368 -32 -384 -32
WIRE -352 -32 -368 -32
WIRE -160 -32 -160 -80
WIRE -160 -32 -176 -32
WIRE -144 -32 -160 -32
WIRE 32 -32 32 -80
WIRE 32 -32 16 -32
WIRE 48 -32 32 -32
WIRE 224 -32 224 -80
WIRE 224 -32 208 -32
WIRE 240 -32 224 -32
WIRE 432 -32 432 -80
WIRE 432 -32 416 -32
WIRE 448 -32 432 -32
WIRE 624 -32 624 -80
WIRE 624 -32 608 -32
WIRE 640 -32 624 -32
WIRE -544 16 -544 -32
WIRE -544 16 -576 16
WIRE -352 16 -352 -32
WIRE -352 16 -384 16
WIRE -144 16 -144 -32
WIRE -144 16 -176 16
WIRE 48 16 48 -32
WIRE 48 16 16 16
WIRE 240 16 240 -32
WIRE 240 16 208 16
WIRE 448 16 448 -32
WIRE 448 16 416 16
WIRE 640 16 640 -32
WIRE 640 16 608 16
WIRE -624 48 -656 48
WIRE -432 48 -464 48
WIRE -224 48 -256 48
WIRE -32 48 -64 48
WIRE 160 48 128 48
WIRE 368 48 336 48
WIRE 560 48 528 48
WIRE -656 80 -656 48
WIRE -656 80 -704 80
WIRE -576 80 -576 64
WIRE -464 80 -464 48
WIRE -464 80 -576 80
WIRE -384 80 -384 64
WIRE -256 80 -256 48
WIRE -256 80 -384 80
WIRE -176 80 -176 64
WIRE -64 80 -64 48
WIRE -64 80 -176 80
WIRE 16 80 16 64
WIRE 128 80 128 48
WIRE 128 80 16 80
WIRE 208 80 208 64
WIRE 336 80 336 48
WIRE 336 80 208 80
WIRE 416 80 416 64
WIRE 528 80 528 48
WIRE 528 80 416 80
WIRE 608 80 608 64
WIRE 688 80 608 80
WIRE 704 80 688 80
WIRE -560 128 -576 128
WIRE -368 128 -384 128
WIRE -160 128 -176 128
WIRE 32 128 16 128
WIRE 224 128 208 128
WIRE 432 128 416 128
WIRE 624 128 608 128
WIRE -656 160 -656 80
WIRE -624 160 -656 160
WIRE -464 160 -464 80
WIRE -432 160 -464 160
WIRE -256 160 -256 80
WIRE -224 160 -256 160
WIRE -64 160 -64 80
WIRE -32 160 -64 160
WIRE 128 160 128 80
WIRE 160 160 128 160
WIRE 336 160 336 80
WIRE 368 160 336 160
WIRE 528 160 528 80
WIRE 560 160 528 160
WIRE -560 176 -560 128
WIRE -560 176 -576 176
WIRE -368 176 -368 128
WIRE -368 176 -384 176
WIRE -160 176 -160 128
WIRE -160 176 -176 176
WIRE 32 176 32 128
WIRE 32 176 16 176
WIRE 224 176 224 128
WIRE 224 176 208 176
WIRE 432 176 432 128
WIRE 432 176 416 176
WIRE 624 176 624 128
WIRE 624 176 608 176
WIRE -576 208 -576 176
WIRE -384 208 -384 176
WIRE -384 208 -576 208
WIRE -176 208 -176 176
WIRE -176 208 -384 208
WIRE 16 208 16 176
WIRE 16 208 -176 208
WIRE 208 208 208 176
WIRE 208 208 16 208
WIRE 304 208 208 208
WIRE 416 208 416 176
WIRE 416 208 304 208
WIRE 608 208 608 176
WIRE 608 208 416 208
WIRE 304 224 304 208
WIRE -704 256 -704 80
WIRE 704 256 704 80
WIRE 704 256 -704 256
FLAG 144 -192 0
FLAG 32 -160 VDD
FLAG 688 80 OUT
FLAG 304 224 0
SYMBOL pmos4 -624 -32 R0
SYMATTR InstName M1
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 -624 80 R0
SYMATTR InstName M2
SYMATTR Value2 l=0.18u w=2.5u
SYMBOL voltage 32 -160 R180
SYMATTR InstName V1
SYMATTR Value 1.8
SYMBOL pmos4 -432 -32 R0
SYMATTR InstName M3
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 -432 80 R0
SYMATTR InstName M4
SYMATTR Value2 l=0.18u w=2.5u
SYMBOL pmos4 -224 -32 R0
SYMATTR InstName M5
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 -224 80 R0
SYMATTR InstName M6
SYMATTR Value2 l=0.18u w=2.5u
SYMBOL pmos4 -32 -32 R0
SYMATTR InstName M7
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 -32 80 R0
SYMATTR InstName M8
SYMATTR Value2 l=0.18u w=2.5u
SYMBOL pmos4 160 -32 R0
SYMATTR InstName M9
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 160 80 R0
SYMATTR InstName M10
SYMATTR Value2 l=0.18u w=2.5u
SYMBOL pmos4 368 -32 R0
SYMATTR InstName M11
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 368 80 R0
SYMATTR InstName M12
SYMATTR Value2 l=0.18u w=2.5u
SYMBOL pmos4 560 -32 R0
SYMATTR InstName M13
SYMATTR Value2 l=0.18u w=5u
SYMBOL nmos4 560 80 R0
SYMATTR InstName M14
SYMATTR Value2 l=0.18u w=2.5u