Version 4
SHEET 1 1892 948
WIRE 80 -192 -176 -192
WIRE 528 -192 80 -192
WIRE 672 -192 528 -192
WIRE 960 -192 928 -192
WIRE 1040 -192 960 -192
WIRE 1168 -192 1040 -192
WIRE 1536 -192 1168 -192
WIRE 1632 -192 1536 -192
WIRE -176 -176 -176 -192
WIRE 1040 -176 1040 -192
WIRE 1168 -176 1168 -192
WIRE 1632 -176 1632 -192
WIRE 960 -160 960 -192
WIRE -176 -80 -176 -96
WIRE 672 -80 304 -80
WIRE 960 -80 960 -96
WIRE 960 -80 928 -80
WIRE 1040 -80 1040 -96
WIRE 1040 -80 960 -80
WIRE 1168 -80 1168 -112
WIRE 1632 -80 1632 -96
WIRE 1040 -64 1040 -80
WIRE 80 0 80 -192
WIRE 304 0 304 -80
WIRE 672 32 656 32
WIRE 960 32 928 32
WIRE 1040 32 1040 16
WIRE 960 48 960 32
WIRE 432 64 416 64
WIRE 528 64 528 -192
WIRE 528 64 512 64
WIRE -112 128 -128 128
WIRE -32 128 -48 128
WIRE 960 128 960 112
WIRE 432 144 416 144
WIRE 528 144 528 64
WIRE 528 144 512 144
WIRE 432 224 416 224
WIRE 528 224 528 144
WIRE 528 224 512 224
WIRE -32 272 -128 272
WIRE -128 288 -128 272
WIRE -176 304 -192 304
WIRE 928 304 416 304
WIRE 1136 304 992 304
WIRE 1280 304 1136 304
WIRE 1536 304 1536 -192
WIRE 1536 304 1344 304
WIRE -176 352 -224 352
WIRE 1008 352 992 352
WIRE 1344 352 1344 320
WIRE 960 368 960 352
WIRE -128 384 -128 368
WIRE 48 400 48 384
WIRE 336 400 336 384
WIRE 128 432 128 384
WIRE 144 432 128 432
WIRE 240 432 240 384
WIRE 240 432 224 432
WIRE 128 464 128 432
WIRE 240 464 240 432
WIRE 1008 464 1008 352
WIRE 1056 464 1008 464
WIRE 1136 464 1136 304
WIRE 1136 464 1120 464
WIRE 336 496 336 480
WIRE 1200 496 1120 496
WIRE 1264 496 1200 496
WIRE 1264 512 1264 496
WIRE -224 528 -224 352
WIRE 128 560 128 544
WIRE 240 560 240 544
WIRE 1104 560 1104 512
WIRE 1264 608 1264 592
WIRE -224 640 -224 608
FLAG -128 128 0
FLAG 48 400 0
FLAG 336 496 0
FLAG 128 560 0
FLAG 240 560 0
FLAG -176 -80 0
FLAG -224 640 0
FLAG 656 32 0
FLAG 1040 32 0
FLAG 960 128 0
FLAG 1168 -80 0
FLAG 1344 352 0
FLAG 1104 560 0
FLAG 1264 608 0
FLAG 1200 496 StopEarly
FLAG 960 368 0
FLAG -128 384 0
FLAG -192 304 0
FLAG 1632 -80 0
SYMBOL LTC2956-1 192 192 R0
SYMATTR InstName U1
SYMBOL cap -48 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1.5n
SYMBOL res 320 384 R0
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL res 128 448 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL res 224 448 R0
SYMATTR InstName R3
SYMATTR Value 9.76K
SYMBOL res 112 448 R0
SYMATTR InstName R4
SYMATTR Value 35.7K
SYMBOL voltage -176 -192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 0 10u 5)
SYMBOL voltage -224 512 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 0 1 0 +100n 1 +100m 1 +100n 0 4 0 +100n 1 5.5 1 +100n 0)
SYMBOL PowerProducts\\LT3060 800 -80 R0
SYMATTR InstName U2
SYMBOL res 1024 -192 R0
SYMATTR InstName R5
SYMATTR Value 279K
SYMBOL res 1024 -80 R0
SYMATTR InstName R6
SYMATTR Value 62K
SYMBOL cap 944 48 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL cap 944 -160 R0
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 1152 -176 R0
SYMATTR InstName C4
SYMATTR Value 10µ
SYMBOL Digital\\schmtbuf 1344 240 M0
WINDOW 3 24 88 Left 2
WINDOW 123 20 116 Left 2
WINDOW 40 29 144 Left 2
SYMATTR Value Vt=3 Vh=3m
SYMATTR Value2 Trise=100n
SYMATTR SpiceLine2 Vhigh=3
SYMATTR InstName A1
SYMBOL Digital\\xor 944 256 M0
WINDOW 3 22 101 Left 2
WINDOW 40 7 163 Left 2
WINDOW 123 1 134 Left 2
SYMATTR SpiceLine2 Vhigh=3
SYMATTR Value2 Trise=100n
SYMATTR InstName A2
SYMBOL Digital\\and 1088 416 M0
WINDOW 3 80 91 Left 2
WINDOW 40 11 152 Left 2
WINDOW 123 11 114 Left 2
SYMATTR SpiceLine2 Vhigh=3
SYMATTR Value2 Trise=5m
SYMATTR InstName A3
SYMBOL voltage 1264 496 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PWL(0 3 2.5 3 +100n 0)
SYMBOL sw -128 272 R0
SYMATTR InstName S1
SYMATTR Value SPB
SYMBOL res 528 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL res 528 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10K
SYMBOL res 528 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10K
SYMBOL res 1616 -192 R0
SYMATTR InstName Rload
SYMATTR Value 100
TEXT 1800 680 Left 2 !.tran 7
TEXT 1080 224 Left 2 ;µProcessor
TEXT 1320 440 Left 2 ;Logic representing µProcessor\nterminates EN early at times\nbefore 2.5 secs.
TEXT -152 664 Left 2 !.model SPB SW(Ron=100 Roff=1G Vt=.5 Vh=-.3)
RECTANGLE Normal 1760 688 720 240 2