Version 4
SHEET 1 880 1004
WIRE -144 96 -176 96
WIRE 32 96 16 96
WIRE -176 112 -176 96
WIRE 16 112 16 96
WIRE -176 224 -176 192
WIRE -144 224 -176 224
WIRE 32 224 16 224
WIRE -176 240 -176 224
WIRE 16 240 16 224
WIRE -128 400 -160 400
WIRE 0 416 -16 416
WIRE 32 416 0 416
WIRE 144 416 112 416
WIRE 208 416 144 416
WIRE -128 432 -144 432
WIRE 208 432 208 416
WIRE 32 496 -160 496
WIRE 112 496 32 496
WIRE 0 512 0 416
WIRE 32 512 32 496
WIRE 112 512 112 496
WIRE 144 512 144 416
WIRE 208 512 208 496
WIRE 128 640 128 624
WIRE 272 640 128 640
WIRE 16 656 16 624
WIRE 80 656 16 656
WIRE 16 672 16 656
WIRE 80 736 80 656
WIRE 128 736 80 736
WIRE 272 752 240 752
WIRE 16 768 16 752
WIRE 128 768 16 768
WIRE 16 784 16 768
WIRE 16 864 16 848
FLAG 16 192 0
FLAG 32 96 A
IOPIN 32 96 Out
FLAG -160 400 A
IOPIN -160 400 In
FLAG -144 96 VCC
IOPIN -144 96 BiDir
FLAG -144 224 VGND
IOPIN -144 224 BiDir
FLAG -176 320 0
FLAG 208 512 0
FLAG -144 432 VCC
FLAG 16 320 0
FLAG 32 224 B
IOPIN 32 224 Out
FLAG -160 496 B
IOPIN -160 496 In
FLAG 272 640 _DIR
IOPIN 272 640 Out
FLAG 16 864 0
FLAG 272 752 _STEP
IOPIN 272 752 Out
SYMBOL voltage 16 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 112 Left 2
SYMATTR SpiceLine Rser=1 Cpar=100p
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 250u 10u 10u 500u 1000u)
SYMBOL voltage -176 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 112 Left 2
SYMATTR SpiceLine Rser=100m
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res -192 224 R0
SYMATTR InstName Rx
SYMATTR Value 1m
SYMBOL cd4077b -80 352 R0
SYMATTR InstName U1
SYMBOL res 16 432 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 22k
SYMBOL cap 192 432 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL cd4077b 80 560 R90
SYMATTR InstName U2
SYMBOL cd4077b 192 560 R90
SYMATTR InstName U3
SYMBOL voltage 16 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 112 Left 2
SYMATTR SpiceLine Rser=1 Cpar=100p
SYMATTR InstName V3
SYMATTR Value PULSE(0 5 0 10u 10u 500u 1000u)
SYMBOL res 0 656 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL cap 0 784 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cd4077b 176 688 R0
SYMATTR InstName U4
TEXT -184 -56 Left 2 ;.lib http://ltwiki.org/files/LTspiceIV/lib/sub/cd4000.lib\n.ferret http://ltwiki.org/files/LTspiceIV/lib/sym/Dig_Add/CD4xxx/cd4077b.asy\n.ferret http://ftp.cnchungary.com/Varsanyi_Peter/CNC vezerles - szervoval/Encoders/Encoder_jelfeldolgozas/Quad2StepDir.pdf
TEXT -184 0 Left 2 !.lib cd4000.lib
TEXT -184 16 Left 2 !.opt plotwinsize=0
TEXT -184 40 Left 2 !.tran 1500u