Version 4
SHEET 1 880 680
WIRE -448 224 -448 208
WIRE -448 336 -448 304
WIRE -432 208 -448 208
WIRE -384 208 -432 208
WIRE -272 208 -304 208
WIRE -208 160 -208 128
WIRE -208 336 -448 336
WIRE -208 336 -208 256
WIRE -176 128 -208 128
WIRE -80 128 -112 128
WIRE -80 192 -80 128
WIRE -80 272 -80 192
WIRE -80 336 -208 336
WIRE -80 352 -80 336
WIRE -64 128 -80 128
WIRE -48 192 -80 192
WIRE 48 128 16 128
WIRE 80 192 64 192
WIRE 80 192 80 160
WIRE 128 128 112 128
WIRE 128 192 80 192
WIRE 128 192 128 128
WIRE 144 192 128 192
FLAG -80 352 0
FLAG 144 192 out
IOPIN 144 192 Out
FLAG -432 208 Modin
SYMBOL Dig_Add\\CD4xxx\\cd40106b 0 144 R0
WINDOW 0 -51 34 Left 0
SYMATTR InstName U1
SYMATTR SpiceLine VDD={VDD}  SPEED=1.0  TRIPDT=5e-9
SYMBOL res 32 112 R90
WINDOW 0 1 96 VBottom 0
WINDOW 3 -27 50 VTop 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL Pote 16 144 R270
WINDOW 0 -11 -10 VRight 0
WINDOW 123 49 127 VCenter 0
WINDOW 3 49 34 VCenter 0
SYMATTR InstName Freq
SYMATTR Value2 Set=.45
SYMATTR Value Rt=10k
SYMBOL cap -96 272 R0
WINDOW 0 -45 8 Left 0
WINDOW 3 -48 54 Left 0
SYMATTR InstName C1
SYMATTR Value 10n
SYMATTR SpiceLine Rpar=1e8
SYMBOL cap -112 112 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 10n
SYMATTR SpiceLine Rpar=1e8
SYMBOL npn2 -272 160 R0
SYMATTR InstName Q1
SYMBOL res -288 192 R90
WINDOW 0 1 96 VBottom 0
WINDOW 3 -25 30 VTop 0
SYMATTR InstName R2
SYMATTR Value 5k6
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL voltage -448 208 R0
WINDOW 3 -80 109 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 0 1u 1u 498u 1m)
TEXT -42 314 Left 0 !.tran 5m
TEXT -40 272 Left 0 !.param VDD=5