Version 4
SHEET 1 1120 680
WIRE 320 -64 320 -80
WIRE 320 -64 272 -64
WIRE 144 -16 144 -64
WIRE 320 -16 320 -64
WIRE -160 48 -160 -16
WIRE -128 48 -160 48
WIRE -80 48 -80 -16
WIRE 272 48 272 -64
WIRE 528 48 528 -16
WIRE 608 48 608 -16
WIRE 608 48 576 48
WIRE -144 96 -208 96
WIRE 32 96 -64 96
WIRE 144 96 144 64
WIRE 144 96 32 96
WIRE 192 96 144 96
WIRE 320 96 320 64
WIRE 320 96 288 96
WIRE 416 96 320 96
WIRE 512 96 416 96
WIRE 640 96 592 96
FLAG 608 -176 0
FLAG 496 -176 0
FLAG 320 -80 3V
IOPIN 320 -80 In
FLAG 496 -256 5V
IOPIN 496 -256 In
FLAG 144 -64 5V
IOPIN 144 -64 In
FLAG 608 -256 3V
IOPIN 608 -256 In
FLAG -208 176 0
FLAG 640 176 0
FLAG 608 -16 0
FLAG -80 -16 0
FLAG 416 96 PIN18V
FLAG 32 96 PIN5V
SYMBOL sw -48 96 R90
SYMATTR InstName S1
SYMBOL sw 608 96 R90
SYMATTR InstName S2
SYMBOL nmos 192 48 M90
SYMATTR InstName M1
SYMATTR Value BSS123
SYMBOL voltage 608 -272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 2.0
SYMBOL res 128 -32 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 304 -32 R0
SYMATTR InstName R2
SYMATTR Value 4k
SYMBOL voltage 496 -272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL voltage -208 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(0 5 5u 0.1u 0.1u 0.9u 2u 4)
SYMATTR SpiceLine Rser=50
SYMBOL voltage 640 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR InstName V4
SYMATTR Value PULSE(0 1.8 20u 0.1u 0.1u .9u 2u)
SYMATTR SpiceLine Rser=10
SYMBOL voltage 512 -16 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value PULSE(-1 1 15u .1u)
SYMBOL voltage -176 -16 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value PULSE(1 -1 15u .1u .1u)
TEXT -8 -224 Left 0 ;Levelshifter bidirektional 5V<->1,8V
TEXT 40 240 Left 0 ;5V sendet: low high 1,8V empfängt 0-15us\n1,8V sendet: low high 5V empfängt 15-30us
TEXT -162 240 Left 0 !.tran 30u