Version 4
SHEET 1 1720 800
WIRE 448 192 416 192
WIRE 544 192 528 192
WIRE 544 208 544 192
WIRE 416 240 416 192
WIRE 416 272 416 240
WIRE 384 304 304 304
WIRE 576 304 448 304
WIRE 672 304 576 304
WIRE 576 336 576 304
WIRE 416 352 416 336
WIRE 672 352 672 304
WIRE 304 416 304 304
WIRE 576 448 576 416
WIRE 672 448 672 416
WIRE 304 512 304 496
FLAG 672 304 OUT
FLAG 416 240 Vcc
FLAG 544 208 0
FLAG 304 512 0
FLAG 304 304 IN
FLAG 416 352 0
FLAG 576 448 0
FLAG 672 448 0
SYMBOL voltage 432 192 R270
WINDOW 123 0 0 Left 2
WINDOW 0 47 35 VRight 2
WINDOW 3 -45 40 VRight 2
SYMATTR InstName Vcc
SYMATTR Value 3.3
SYMBOL res 560 320 R0
SYMATTR InstName RL
SYMATTR Value 10k
SYMBOL voltage 304 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 31 94 Left 2
SYMATTR Value SINE(1.65 50m 100k)
SYMATTR InstName V1
SYMBOL cap 656 352 R0
SYMATTR InstName C1
SYMATTR Value 1p
SYMBOL MAX44281O 416 240 R0
SYMATTR InstName U1
TEXT 288 560 Left 2 !.tran 10u