Version 4 SHEET 1 1696 1164 WIRE 880 -16 864 -16 WIRE 1184 -16 1168 -16 WIRE 1392 0 1376 0 WIRE 1424 0 1392 0 WIRE 880 16 416 16 WIRE 1184 16 1088 16 WIRE 880 48 864 48 WIRE 1184 48 1168 48 WIRE 112 64 96 64 WIRE 1088 64 1088 16 WIRE 1088 64 1072 64 WIRE 272 80 224 80 WIRE 1184 80 1168 80 WIRE -416 96 -448 96 WIRE -384 96 -416 96 WIRE -288 96 -320 96 WIRE -272 96 -288 96 WIRE 112 96 96 96 WIRE -448 112 -448 96 WIRE -320 112 -320 96 WIRE 272 160 272 80 WIRE 288 160 272 160 WIRE 800 176 400 176 WIRE 880 176 880 80 WIRE 880 176 864 176 WIRE 896 176 880 176 WIRE 976 176 960 176 WIRE 1088 176 1088 64 WIRE 1088 176 1056 176 WIRE 96 192 96 96 WIRE 112 192 96 192 WIRE 208 192 192 192 WIRE 288 192 208 192 WIRE -448 208 -448 192 WIRE -320 208 -320 192 WIRE 208 208 208 192 WIRE 208 288 208 272 WIRE 272 304 272 160 WIRE 288 304 272 304 WIRE 480 304 448 304 WIRE 512 304 480 304 WIRE 608 304 592 304 WIRE 688 304 608 304 WIRE 848 304 768 304 WIRE 880 304 880 176 WIRE 880 304 848 304 WIRE -416 320 -448 320 WIRE -384 320 -416 320 WIRE 416 320 416 16 WIRE 416 320 400 320 WIRE 608 320 608 304 WIRE 768 320 768 304 WIRE -448 336 -448 320 WIRE 64 336 48 336 WIRE 96 336 96 192 WIRE 96 336 64 336 WIRE 112 336 96 336 WIRE 208 336 192 336 WIRE 272 336 208 336 WIRE 288 336 272 336 WIRE 208 352 208 336 WIRE 880 352 880 304 WIRE 688 368 688 304 WIRE 688 368 672 368 WIRE 704 368 688 368 WIRE -448 432 -448 416 WIRE 208 432 208 416 WIRE 272 432 272 336 WIRE 384 432 272 432 WIRE 416 432 384 432 WIRE 608 432 608 416 WIRE 768 432 768 416 WIRE 880 432 880 416 FLAG -448 208 0 FLAG -416 96 VCC FLAG -288 96 IN FLAG 880 432 0 FLAG 608 432 0 FLAG 768 432 0 FLAG 864 -16 VCC FLAG 864 48 VCC FLAG -320 208 0 FLAG 64 336 IN FLAG 208 288 0 FLAG -448 432 0 FLAG -416 320 MOD FLAG 480 304 MOD FLAG 1168 -16 VCC FLAG 1168 80 VCC FLAG 1168 48 IN2 FLAG 1392 0 OUT FLAG 96 64 VCC FLAG 208 432 0 FLAG 384 432 IN2 FLAG 848 304 DL SYMBOL voltage -448 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value {VCC} SYMBOL npn 672 320 M0 SYMATTR InstName Q1 SYMATTR Value BC847B SYMBOL npn 704 320 R0 SYMATTR InstName Q2 SYMATTR Value BC847B SYMBOL res 96 208 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL voltage -448 320 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(0 3.3 0 10m 1n 1n 20m) SYMBOL voltage -320 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value PULSE(0 3.3 0 1n 1n 5u 10u) SYMBOL res 96 352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 2k SYMBOL cap 192 208 R0 SYMATTR InstName C1 SYMATTR Value 100p SYMBOL cap 192 352 R0 SYMATTR InstName C2 SYMATTR Value 100p SYMBOL Dig_Add\\74HC\\74hc86 160 16 R0 SYMATTR InstName U1 SYMBOL Dig_Add\\74HC\\74hc86 336 112 R0 SYMATTR InstName U2 SYMBOL Dig_Add\\74HC\\74hc86 336 256 R0 SYMATTR InstName U3 SYMBOL Dig_Add\\74HC\\74hc74.1 976 -80 R0 WINDOW 3 -36 51 Left 2 SYMATTR InstName U4 SYMATTR SpiceLine VCC={VCC} SPEED=1.0 TRIPDT=1e-9 SYMBOL Dig_Add\\74HC\\74hc74.1 1280 -80 R0 WINDOW 3 -36 51 Left 2 SYMATTR InstName U5 SYMATTR SpiceLine VCC={VCC} SPEED=1.0 TRIPDT=1e-9 SYMBOL res 496 320 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL cap 864 352 R0 SYMATTR InstName C3 SYMATTR Value 100p SYMBOL schottky 864 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 960 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 1072 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 100 TEXT -472 -8 Left 2 !.tran 10m uic TEXT -472 -56 Left 2 !.param VCC=3.3 TEXT -232 -56 Left 2 !.include "C:\\Program Files\\LTC\\LTspiceIV\\lib\\sub\\74HC_v.lib"