Version 4
SHEET 1 880 680
WIRE 96 -112 -32 -112
WIRE 240 -112 96 -112
WIRE 480 -112 240 -112
WIRE -32 -96 -32 -112
WIRE 336 -48 272 -48
WIRE 368 -48 336 -48
WIRE 480 -48 480 -112
WIRE 480 -48 448 -48
WIRE 336 0 336 -48
WIRE 480 0 336 0
WIRE -32 16 -32 -16
WIRE 336 48 304 48
WIRE 368 48 336 48
WIRE 480 48 480 0
WIRE 480 48 448 48
WIRE 96 64 96 -112
WIRE 16 80 -160 80
WIRE 240 80 240 -112
WIRE 240 80 176 80
WIRE -160 96 -160 80
WIRE 336 96 336 48
WIRE 480 96 336 96
WIRE 272 112 272 -48
WIRE 272 112 176 112
WIRE 304 144 304 48
WIRE 304 144 176 144
WIRE 368 144 336 144
WIRE 480 144 480 96
WIRE 480 144 448 144
WIRE 336 176 336 144
WIRE 336 176 176 176
WIRE -160 192 -160 176
WIRE 336 192 336 176
WIRE 480 192 336 192
WIRE 16 208 -32 208
WIRE 304 208 176 208
WIRE 16 240 -32 240
WIRE 272 240 176 240
WIRE 304 240 304 208
WIRE 336 240 304 240
WIRE 368 240 336 240
WIRE 480 240 480 192
WIRE 480 240 448 240
WIRE 16 272 -32 272
WIRE 240 272 176 272
WIRE 336 288 336 240
WIRE 480 288 336 288
WIRE 16 304 -32 304
WIRE 208 304 176 304
WIRE 272 336 272 240
WIRE 320 336 272 336
WIRE 368 336 320 336
WIRE 480 336 480 288
WIRE 480 336 448 336
WIRE -336 352 -336 304
WIRE -224 352 -224 304
WIRE -128 352 -128 304
WIRE -32 352 -32 304
WIRE 96 352 96 320
WIRE 320 384 320 336
WIRE 480 384 320 384
WIRE 240 432 240 272
WIRE 320 432 240 432
WIRE 368 432 320 432
WIRE 480 432 480 384
WIRE 480 432 448 432
WIRE -336 464 -336 432
WIRE -224 464 -224 432
WIRE -128 464 -128 432
WIRE -32 464 -32 432
WIRE 320 480 320 432
WIRE 480 480 320 480
WIRE 208 528 208 304
WIRE 320 528 208 528
WIRE 352 528 320 528
WIRE 480 528 480 480
WIRE 480 528 432 528
WIRE 320 560 320 528
FLAG 320 560 0
FLAG -160 192 0
FLAG -160 80 out
FLAG -32 464 0
FLAG -336 464 0
FLAG -224 464 0
FLAG -128 464 0
FLAG -336 304 s2
FLAG -224 304 s1
FLAG -128 304 s0
FLAG -32 208 s2
FLAG -32 240 s1
FLAG -32 272 s0
FLAG -32 16 0
FLAG 96 352 0
FLAG 96 -112 VCC
SYMBOL 74HC4051 96 192 R0
SYMATTR InstName X1
SYMBOL res 352 -32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 352 64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 352 160 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 352 256 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 352 352 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 352 448 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL res 336 544 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL voltage -32 -112 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res -176 80 R0
SYMATTR InstName R8
SYMATTR Value 1Meg
SYMBOL voltage -32 336 R0
SYMATTR InstName V2
SYMATTR Value 0
SYMBOL voltage -336 336 R0
WINDOW 3 -28 179 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 5 40u 5n 5n 40u 80u)
SYMATTR InstName V3
SYMBOL voltage -224 336 R0
WINDOW 3 -17 223 Left 2
SYMATTR Value PULSE(0 5 20u 5n 5n 20u 40u)
SYMATTR InstName V4
SYMBOL voltage -128 336 R0
WINDOW 3 -10 267 Left 2
SYMATTR Value PULSE(0 5 10u 5n 5n 10u 20u)
SYMATTR InstName V5
TEXT -344 -88 Left 2 !.tran 0 200u 0 10n