* SPICE netlist
V1 N017 0 3.6
R1 N002 N006 1
R2 N006 0 3.3
M1 N010 N005 0 0 NMOS
M2 N011 N014 0 0 NMOS
M3 N012 N015 0 0 NMOS
M4 N013 N016 0 0 NMOS
M5 N009 N007 0 0 NMOS
V2 N001 0 14.8
S1 N002 N017 N008 0 SW
S3 N014 N006 N021 0 SW
S4 N015 N006 N019 0 SW
S5 N016 N006 N020 0 SW
V3 N008 0 PULSE(0 5 10 1n 1n 5 10 1)
V4 N004 0 PULSE(0 -5 0 1n 1n 4 20 1)
V5 N003 0 PULSE(0 2.7 0 1n 1n 30 10 1)
V6 N021 0 PULSE(0 5 12 1n 1n 30 20 1)
V7 N019 0 PULSE(0 5 18 1n 1n 30 10 1)
V8 N020 0 PULSE(0 5 24 1n 1n 30 10 1)
R3 N001 N009 10k
R4 N001 N010 1
R5 N001 N011 1
R6 N001 N012 1
R7 N001 N013 1
XU1 NC_01 N005 N003 NC_02 MP_03 MP_04 MP_05 MP_06 MP_07 MP_08 MP_09 MP_10 NC_11 0 NC_12 0 ADG1633 ;pnba Vdd)SA)D)SB)))))))))Vss)_EN)IN1)GND
M6 N007 N004 N006 N006 AO3423
.tran 36

* LTspice schematic (.asc)
Version 4
SHEET 1 2080 880
WIRE -288 -440 -1040 -440
WIRE 64 -440 -288 -440
WIRE 384 -440 64 -440
WIRE 720 -440 384 -440
WIRE 1040 -440 720 -440
WIRE -592 -360 -768 -360
WIRE -192 -328 -240 -328
WIRE -448 -296 -560 -296
WIRE 16 -296 0 -296
WIRE 1040 -296 1040 -440
WIRE -592 -280 -592 -360
WIRE -288 -280 -288 -440
WIRE 64 -280 64 -440
WIRE 384 -280 384 -440
WIRE 720 -280 720 -440
WIRE 176 -232 0 -232
WIRE -448 -216 -448 -296
WIRE -768 -168 -768 -360
WIRE -464 -168 -496 -168
WIRE -448 -168 -464 -168
WIRE -336 -168 -368 -168
WIRE -816 -152 -960 -152
WIRE -816 -104 -896 -104
WIRE -288 -104 -288 -200
WIRE 64 -104 64 -200
WIRE 384 -104 384 -200
WIRE 720 -104 720 -200
WIRE 1040 -104 1040 -216
WIRE -1040 -24 -1040 -440
WIRE -896 -24 -896 -104
WIRE -592 -24 -592 -200
WIRE -496 -24 -496 -168
WIRE -496 -24 -592 -24
WIRE -336 -24 -336 -168
WIRE 16 -24 16 -296
WIRE 224 -24 208 -24
WIRE 336 -24 304 -24
WIRE 560 -24 512 -24
WIRE 672 -24 640 -24
WIRE 992 -24 944 -24
WIRE -768 -8 -768 -88
WIRE -448 24 -464 24
WIRE -240 24 -240 -328
WIRE -112 24 -240 24
WIRE 576 24 560 24
WIRE 880 24 848 24
WIRE -592 40 -592 -24
WIRE -496 120 -496 -24
WIRE 208 120 208 -24
WIRE 208 120 -496 120
WIRE 512 120 512 -24
WIRE 512 120 208 120
WIRE 864 120 864 -24
WIRE 864 120 512 120
WIRE -560 152 -560 -296
WIRE -464 152 -560 152
WIRE -464 184 -464 152
WIRE -112 184 -112 24
WIRE 240 184 240 24
WIRE 560 184 560 24
WIRE 848 200 848 24
WIRE -1040 376 -1040 56
WIRE -960 376 -960 -152
WIRE -960 376 -1040 376
WIRE -896 376 -896 56
WIRE -896 376 -960 376
WIRE -768 376 -768 72
WIRE -768 376 -896 376
WIRE -592 376 -592 120
WIRE -592 376 -768 376
WIRE -464 376 -464 264
WIRE -464 376 -592 376
WIRE -288 376 -288 -8
WIRE -288 376 -464 376
WIRE -112 376 -112 264
WIRE -112 376 -288 376
WIRE -32 376 -32 -120
WIRE -32 376 -112 376
WIRE 64 376 64 -8
WIRE 64 376 -32 376
WIRE 176 376 176 -232
WIRE 176 376 64 376
WIRE 240 376 240 264
WIRE 240 376 176 376
WIRE 288 376 288 24
WIRE 288 376 240 376
WIRE 384 376 384 -8
WIRE 384 376 288 376
WIRE 560 376 560 264
WIRE 560 376 384 376
WIRE 624 376 624 24
WIRE 624 376 560 376
WIRE 720 376 720 -8
WIRE 720 376 624 376
WIRE 848 376 848 280
WIRE 848 376 720 376
WIRE 928 376 928 24
WIRE 928 376 848 376
WIRE 1040 376 1040 -8
WIRE 1040 376 928 376
WIRE 176 440 176 376
FLAG 176 440 0
SYMBOL voltage -768 -24 R0
SYMATTR InstName V1
SYMATTR Value 3.6
SYMBOL res -608 -296 R0
SYMATTR InstName R1
SYMATTR Value 1
SYMBOL res -608 24 R0
SYMATTR InstName R2
SYMATTR Value 3.3
SYMBOL nmos 16 -104 R0
SYMATTR InstName M1
SYMBOL nmos 336 -104 R0
SYMATTR InstName M2
SYMBOL nmos 672 -104 R0
SYMATTR InstName M3
SYMBOL nmos 992 -104 R0
SYMATTR InstName M4
SYMBOL nmos -336 -104 R0
SYMATTR InstName M5
SYMBOL voltage -1040 -40 R0
SYMATTR InstName V2
SYMATTR Value 14.8
SYMBOL sw -768 -184 R0
SYMATTR InstName S1
SYMBOL sw 320 -24 M270
SYMATTR InstName S3
SYMBOL sw 656 -24 M270
SYMATTR InstName S4
SYMBOL sw 960 -24 M270
SYMATTR InstName S5
SYMBOL voltage -896 -40 R0
SYMATTR Value PULSE(0 5 10 1n 1n 5 10 1)
SYMATTR InstName V3
SYMBOL voltage -464 168 R0
SYMATTR Value PULSE(0 -5 0 1n 1n 4 20 1)
SYMATTR InstName V4
SYMBOL voltage -112 168 R0
SYMATTR Value PULSE(0 2.7 0 1n 1n 30 10 1)
SYMATTR InstName V5
SYMBOL voltage 240 168 R0
SYMATTR Value PULSE(0 5 12 1n 1n 30 20 1)
SYMATTR InstName V6
SYMBOL voltage 560 168 R0
SYMATTR Value PULSE(0 5 18 1n 1n 30 10 1)
SYMATTR InstName V7
SYMBOL voltage 848 184 R0
SYMATTR Value PULSE(0 5 24 1n 1n 30 10 1)
SYMATTR InstName V8
SYMBOL res -304 -296 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 48 -296 R0
SYMATTR InstName R4
SYMATTR Value 1
SYMBOL res 368 -296 R0
SYMATTR InstName R5
SYMATTR Value 1
SYMBOL res 704 -296 R0
SYMATTR InstName R6
SYMATTR Value 1
SYMBOL res 1024 -312 R0
SYMATTR InstName R7
SYMATTR Value 1
SYMBOL Switches\\ADG1633 -96 -280 R0
SYMATTR InstName U1
SYMBOL pmos -368 -216 R90
SYMATTR InstName M6
SYMATTR Value AO3423