Version 4
SHEET 1 880 680
WIRE 96 128 -64 128
WIRE 240 128 160 128
WIRE 272 128 240 128
WIRE -64 144 -64 128
WIRE 96 160 48 160
WIRE 272 160 160 160
WIRE -64 240 -64 224
WIRE -32 336 -64 336
WIRE 48 336 48 160
WIRE 48 336 -32 336
WIRE -64 368 -64 336
WIRE -64 480 -64 448
FLAG -64 240 0
FLAG -64 480 0
FLAG 240 128 out
FLAG -32 336 in
SYMBOL Digital\\diffschmitt 96 80 R0
WINDOW 39 -14 121 Left 2
SYMATTR InstName A1
SYMATTR SpiceLine Vt=0 Vh=0.1
SYMBOL voltage -64 352 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PWL(0 0 1m 1 2m 0)
SYMBOL voltage -64 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 0.5
TEXT -80 -24 Left 2 !.tran 2m