Version 4
SHEET 1 1192 680
WIRE -912 128 -976 128
WIRE -496 128 -912 128
WIRE -448 128 -496 128
WIRE -368 128 -384 128
WIRE -208 128 -288 128
WIRE -80 128 -128 128
WIRE 48 128 -80 128
WIRE 176 128 48 128
WIRE 224 128 176 128
WIRE 304 128 288 128
WIRE 464 128 384 128
WIRE 592 128 544 128
WIRE 704 128 592 128
WIRE 832 128 704 128
WIRE 880 128 832 128
WIRE 960 128 944 128
WIRE 1088 128 1040 128
WIRE 592 144 592 128
WIRE -976 160 -976 128
WIRE -496 160 -496 128
WIRE -80 160 -80 128
WIRE 48 160 48 128
WIRE 176 160 176 128
WIRE 704 160 704 128
WIRE 832 160 832 128
WIRE -976 256 -976 240
WIRE -496 256 -496 224
WIRE -80 256 -80 224
WIRE 48 256 48 224
WIRE 176 256 176 224
WIRE 592 256 592 208
WIRE 704 256 704 224
WIRE 832 256 832 224
FLAG -80 256 0
FLAG 592 256 0
FLAG -976 256 0
FLAG -912 128 in
FLAG 1088 128 out
IOPIN 1088 128 Out
FLAG 176 256 0
FLAG 832 256 0
FLAG 48 256 0
FLAG 704 256 0
FLAG -496 256 0
SYMBOL Digital\\inv 224 64 R0
SYMATTR InstName A1
SYMATTR SpiceLine Td=5n Trise=5n
SYMATTR SpiceLine2 Vhigh=5 Vlow=0  Ref=2.5
SYMBOL res 448 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 2k
SYMBOL cap 576 144 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL cap -96 160 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL voltage -976 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 0 5n 5n 6.245u 12.5u)
SYMATTR SpiceLine Rser=50
SYMBOL res -224 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 2k
SYMBOL cap 160 160 R0
SYMATTR InstName C3
SYMATTR Value 5p
SYMBOL res 288 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 50
SYMBOL Digital\\inv 880 64 R0
SYMATTR InstName A2
SYMATTR SpiceLine Td=5n Trise=5n
SYMATTR SpiceLine2 Vhigh=5 Vlow=0  Ref=2.5
SYMBOL cap 816 160 R0
SYMATTR InstName C4
SYMATTR Value 5p
SYMBOL res 944 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 50
SYMBOL cap 32 160 R0
SYMATTR InstName CL1
SYMATTR Value 5p
SYMBOL cap 688 160 R0
SYMATTR InstName CL2
SYMATTR Value 5p
SYMBOL Digital\\inv -448 64 R0
SYMATTR InstName A3
SYMATTR SpiceLine Td=5n Trise=5n
SYMATTR SpiceLine2 Vhigh=5 Vlow=0  Ref=2.5
SYMBOL cap -512 160 R0
SYMATTR InstName C5
SYMATTR Value 5p
SYMBOL res -384 144 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 50
TEXT -968 -16 Left 2 !.tran 0 25u 0 1n
TEXT 32 -136 Left 5 ;320ns Delay 74HC04
TEXT 32 -64 Left 2 ;Maximum risetime/Volt 130ns/V -> max. 200ns per gate
RECTANGLE Normal 400 304 128 48 2
RECTANGLE Normal 1056 304 784 48 2
RECTANGLE Normal -272 304 -544 48 2