* SPICE netlist
Cvdd N014 0 2.2
Vin IN 0 12
R1 N002 N001 10k
XU1 N002 N004 N006 N007 N009 N011 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 0 N014 NC_01 NC_02 ON IN LTC2937 ;pnba EN1)EN2)EN3)EN4)EN5)EN6)V1)V2)V3)V4)V5)V6)GND)VDD)SPCLK)RSTB)ON)VPWR
Von ON 0 PWL(0.1m 0 0.101m 3.3 7m 3.3 7.001m 0)
M1 N001 N003 OUT1 OUT1 AO6408
A1 N002 0 0 0 0 0 N003 0 SCHMITT trise=1m tfall=10n Vhigh=10 Vt=0.5
C1 OUT1 0 100
Vin1 N001 0 5
RLoad1 OUT1 0 1
R2 N004 N005 10k
M2 N005 N008 OUT2 OUT2 AO6408
A2 N004 0 0 0 0 0 N008 0 SCHMITT trise=1m tfall=10n Vhigh=10 Vt=0.5
C3 OUT2 0 100
Vin2 N005 0 3.3
RLoad2 OUT2 0 1
R3 N006 N010 10k
M3 N010 N012 OUT3 OUT3 AO6408
A3 N006 0 0 0 0 0 N012 0 SCHMITT trise=1m tfall=10n Vhigh=10 Vt=0.5
C5 OUT3 0 100
Vin3 N010 0 2.5
RLoad3 OUT3 0 1
R4 N007 N013 10k
M4 N013 N015 OUT4 OUT4 AO6408
A4 N007 0 0 0 0 0 N015 0 SCHMITT trise=1m tfall=10n Vhigh=10 Vt=0.5
C7 OUT4 0 100
Vin4 N013 0 1.8
RLoad4 OUT4 0 1
R5 N009 N016 10k
M5 N016 N017 OUT5 OUT5 AO6408
A5 N009 0 0 0 0 0 N017 0 SCHMITT trise=1m tfall=10n Vhigh=10 Vt=0.5
C9 OUT5 0 100
Vin5 N016 0 1.5
RLoad5 OUT5 0 1
R6 N011 N018 10k
M6 N018 N019 OUT6 OUT6 AO6408
A6 N011 0 0 0 0 0 N019 0 SCHMITT trise=1m tfall=10n Vhigh=10 Vt=0.5
C11 OUT6 0 100
Vin6 N018 0 1.2
RLoad6 OUT6 0 1
.tran 10ms

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1920 1568
WIRE 160 -784 64 -784
WIRE 416 -784 160 -784
WIRE 576 -784 512 -784
WIRE 672 -784 576 -784
WIRE 912 -784 672 -784
WIRE 960 -784 912 -784
WIRE 64 -768 64 -784
WIRE 576 -768 576 -784
WIRE 672 -768 672 -784
WIRE 160 -752 160 -784
WIRE 576 -688 576 -704
WIRE 64 -672 64 -688
WIRE 672 -672 672 -688
WIRE -928 -640 -944 -640
WIRE -832 -640 -928 -640
WIRE 160 -640 160 -672
WIRE 160 -640 -352 -640
WIRE 272 -640 160 -640
WIRE 496 -640 496 -736
WIRE 496 -640 336 -640
WIRE -944 -624 -944 -640
WIRE 272 -608 272 -624
WIRE 0 -560 -352 -560
WIRE 160 -544 64 -544
WIRE 416 -544 160 -544
WIRE 576 -544 512 -544
WIRE 672 -544 576 -544
WIRE 880 -544 672 -544
WIRE 928 -544 880 -544
WIRE 64 -528 64 -544
WIRE 576 -528 576 -544
WIRE 672 -528 672 -544
WIRE 160 -512 160 -544
WIRE -928 -480 -944 -480
WIRE -832 -480 -928 -480
WIRE -32 -480 -352 -480
WIRE -944 -464 -944 -480
WIRE 576 -448 576 -464
WIRE 64 -432 64 -448
WIRE 672 -432 672 -448
WIRE -64 -400 -352 -400
WIRE 0 -400 0 -560
WIRE 160 -400 160 -432
WIRE 160 -400 0 -400
WIRE 272 -400 160 -400
WIRE 496 -400 496 -496
WIRE 496 -400 336 -400
WIRE 272 -368 272 -384
WIRE -96 -320 -352 -320
WIRE 144 -304 48 -304
WIRE 416 -304 144 -304
WIRE 576 -304 512 -304
WIRE 672 -304 576 -304
WIRE 848 -304 672 -304
WIRE 896 -304 848 -304
WIRE 48 -288 48 -304
WIRE 576 -288 576 -304
WIRE 672 -288 672 -304
WIRE 144 -272 144 -304
WIRE -128 -240 -352 -240
WIRE 576 -208 576 -224
WIRE 48 -192 48 -208
WIRE 672 -192 672 -208
WIRE -160 -160 -352 -160
WIRE -32 -160 -32 -480
WIRE 144 -160 144 -192
WIRE 144 -160 -32 -160
WIRE 256 -160 144 -160
WIRE 496 -160 496 -256
WIRE 496 -160 320 -160
WIRE 256 -128 256 -144
WIRE -192 -80 -352 -80
WIRE 144 -64 48 -64
WIRE 416 -64 144 -64
WIRE 576 -64 512 -64
WIRE 672 -64 576 -64
WIRE 816 -64 672 -64
WIRE 864 -64 816 -64
WIRE 48 -48 48 -64
WIRE 576 -48 576 -64
WIRE 672 -48 672 -64
WIRE 144 -32 144 -64
WIRE -832 0 -944 0
WIRE -224 0 -352 0
WIRE -944 32 -944 0
WIRE 576 32 576 16
WIRE 48 48 48 32
WIRE 672 48 672 32
WIRE -256 80 -352 80
WIRE -64 80 -64 -400
WIRE 144 80 144 48
WIRE 144 80 -64 80
WIRE 256 80 144 80
WIRE 496 80 496 -16
WIRE 496 80 320 80
WIRE -944 112 -944 96
WIRE 256 112 256 96
WIRE -288 160 -352 160
WIRE 128 176 32 176
WIRE 416 176 128 176
WIRE 576 176 512 176
WIRE 672 176 576 176
WIRE 784 176 672 176
WIRE 832 176 784 176
WIRE 32 192 32 176
WIRE 576 192 576 176
WIRE 672 192 672 176
WIRE 128 208 128 176
WIRE -832 240 -944 240
WIRE -320 240 -352 240
WIRE -944 272 -944 240
WIRE 576 272 576 256
WIRE 32 288 32 272
WIRE 672 288 672 272
WIRE -96 320 -96 -320
WIRE 128 320 128 288
WIRE 128 320 -96 320
WIRE 240 320 128 320
WIRE 496 320 496 224
WIRE 496 320 304 320
WIRE 240 352 240 336
WIRE 128 416 32 416
WIRE 416 416 128 416
WIRE 576 416 512 416
WIRE 672 416 576 416
WIRE 752 416 672 416
WIRE 800 416 752 416
WIRE 32 432 32 416
WIRE 576 432 576 416
WIRE 672 432 672 416
WIRE 128 448 128 416
WIRE 576 512 576 496
WIRE 32 528 32 512
WIRE 672 528 672 512
WIRE -128 560 -128 -240
WIRE 128 560 128 528
WIRE 128 560 -128 560
WIRE 240 560 128 560
WIRE 496 560 496 464
WIRE 496 560 304 560
WIRE 240 592 240 576
WIRE -160 624 -160 -160
WIRE 960 624 960 -784
WIRE 960 624 -160 624
WIRE -192 656 -192 -80
WIRE 928 656 928 -544
WIRE 928 656 -192 656
WIRE -224 688 -224 0
WIRE 896 688 896 -304
WIRE 896 688 -224 688
WIRE -256 720 -256 80
WIRE 864 720 864 -64
WIRE 864 720 -256 720
WIRE -288 752 -288 160
WIRE 832 752 832 176
WIRE 832 752 -288 752
WIRE -320 784 -320 240
WIRE 800 784 800 416
WIRE 800 784 -320 784
FLAG -944 -544 0
FLAG -944 -384 0
FLAG -944 112 0
FLAG 64 -672 0
FLAG 576 -688 0
FLAG 672 -672 0
FLAG 272 -608 0
FLAG -944 272 0
FLAG -928 -480 ON
FLAG 912 -784 OUT1
FLAG 64 -432 0
FLAG 576 -448 0
FLAG 672 -432 0
FLAG 272 -368 0
FLAG 880 -544 OUT2
FLAG 48 -192 0
FLAG 576 -208 0
FLAG 672 -192 0
FLAG 256 -128 0
FLAG 848 -304 OUT3
FLAG 48 48 0
FLAG 576 32 0
FLAG 672 48 0
FLAG 256 112 0
FLAG 816 -64 OUT4
FLAG 32 288 0
FLAG 576 272 0
FLAG 672 288 0
FLAG 240 352 0
FLAG 784 176 OUT5
FLAG 32 528 0
FLAG 576 512 0
FLAG 672 528 0
FLAG 240 592 0
FLAG 752 416 OUT6
FLAG -928 -640 IN
SYMBOL cap -960 32 R0
SYMATTR InstName Cvdd
SYMATTR Value 2.2
SYMBOL voltage -944 -640 R0
SYMATTR InstName Vin
SYMATTR Value 12
SYMBOL res 144 -656 M180
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL LTC2937 -592 -256 R0
SYMATTR InstName U1
SYMBOL voltage -944 -480 R0
SYMATTR InstName Von
SYMATTR Value PWL(0.1m 0 0.101m 3.3 7m 3.3 7.001m 0)
SYMBOL nmos 416 -736 R270
SYMATTR InstName M1
SYMATTR Value AO6408
SYMBOL Digital\\schmtbuf 272 -704 R0
SYMATTR Value trise=1m tfall=10n
SYMATTR Value2 Vhigh=10 Vt=0.5
SYMATTR InstName A1
SYMBOL cap 560 -768 R0
SYMATTR InstName C1
SYMATTR Value 100
SYMBOL voltage 64 -784 R0
SYMATTR InstName Vin1
SYMATTR Value 5
SYMBOL res 656 -784 R0
SYMATTR InstName RLoad1
SYMATTR Value 1
SYMBOL res 144 -416 M180
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL nmos 416 -496 R270
SYMATTR InstName M2
SYMATTR Value AO6408
SYMBOL Digital\\schmtbuf 272 -464 R0
SYMATTR Value trise=1m tfall=10n
SYMATTR Value2 Vhigh=10 Vt=0.5
SYMATTR InstName A2
SYMBOL cap 560 -528 R0
SYMATTR InstName C3
SYMATTR Value 100
SYMBOL voltage 64 -544 R0
SYMATTR InstName Vin2
SYMATTR Value 3.3
SYMBOL res 656 -544 R0
SYMATTR InstName RLoad2
SYMATTR Value 1
SYMBOL res 128 -176 M180
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL nmos 416 -256 R270
SYMATTR InstName M3
SYMATTR Value AO6408
SYMBOL Digital\\schmtbuf 256 -224 R0
SYMATTR Value trise=1m tfall=10n
SYMATTR Value2 Vhigh=10 Vt=0.5
SYMATTR InstName A3
SYMBOL cap 560 -288 R0
SYMATTR InstName C5
SYMATTR Value 100
SYMBOL voltage 48 -304 R0
SYMATTR InstName Vin3
SYMATTR Value 2.5
SYMBOL res 656 -304 R0
SYMATTR InstName RLoad3
SYMATTR Value 1
SYMBOL res 128 64 M180
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL nmos 416 -16 R270
SYMATTR InstName M4
SYMATTR Value AO6408
SYMBOL Digital\\schmtbuf 256 16 R0
SYMATTR Value trise=1m tfall=10n
SYMATTR Value2 Vhigh=10 Vt=0.5
SYMATTR InstName A4
SYMBOL cap 560 -48 R0
SYMATTR InstName C7
SYMATTR Value 100
SYMBOL voltage 48 -64 R0
SYMATTR InstName Vin4
SYMATTR Value 1.8
SYMBOL res 656 -64 R0
SYMATTR InstName RLoad4
SYMATTR Value 1
SYMBOL res 112 304 M180
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL nmos 416 224 R270
SYMATTR InstName M5
SYMATTR Value AO6408
SYMBOL Digital\\schmtbuf 240 256 R0
SYMATTR Value trise=1m tfall=10n
SYMATTR Value2 Vhigh=10 Vt=0.5
SYMATTR InstName A5
SYMBOL cap 560 192 R0
SYMATTR InstName C9
SYMATTR Value 100
SYMBOL voltage 32 176 R0
SYMATTR InstName Vin5
SYMATTR Value 1.5
SYMBOL res 656 176 R0
SYMATTR InstName RLoad5
SYMATTR Value 1
SYMBOL res 112 544 M180
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL nmos 416 464 R270
SYMATTR InstName M6
SYMATTR Value AO6408
SYMBOL Digital\\schmtbuf 240 496 R0
SYMATTR Value trise=1m tfall=10n
SYMATTR Value2 Vhigh=10 Vt=0.5
SYMATTR InstName A6
SYMBOL cap 560 432 R0
SYMATTR InstName C11
SYMATTR Value 100
SYMBOL voltage 32 416 R0
SYMATTR InstName Vin6
SYMATTR Value 1.2
SYMBOL res 656 416 R0
SYMATTR InstName RLoad6
SYMATTR Value 1