Version 4 SHEET 1 2740 696 WIRE 80 -848 80 -912 WIRE 80 -736 80 -768 WIRE 80 -704 80 -736 WIRE 80 -560 80 -624 WIRE 160 -736 80 -736 WIRE 192 -736 160 -736 WIRE 464 -736 352 -736 WIRE 480 -784 480 -848 WIRE 640 -736 544 -736 FLAG 160 -736 Vtrip FLAG 80 -912 VDD IOPIN 80 -912 In FLAG 80 -560 0 FLAG 528 -784 Vtrip FLAG 640 -736 P2 IOPIN 640 -736 BiDir FLAG 352 -736 P1 IOPIN 352 -736 BiDir FLAG 480 -848 clk IOPIN 480 -848 In SYMBOL sw 560 -736 R90 WINDOW 3 24 -12 Left 0 WINDOW 38 39 67 Left 0 WINDOW 0 38 33 Left 0 SYMATTR Value "" SYMATTR SpiceModel switmod SYMATTR InstName S1 SYMBOL res 64 -720 R0 SYMATTR InstName R1 SYMATTR Value 100MEG SYMBOL res 64 -864 R0 SYMATTR InstName R2 SYMATTR Value 100MEG TEXT 392 -576 Left 0 !.model switmod SW