* SPICE netlist
Q5 N001 N006 N007 0 2N3904
Q7 N001 N007 OUT 0 2N2219A
Q8 OUT N013 N014 0 2N2219A
Q6 N013 N012 OUT 0 2N3906
V1 N001 0 10
V2 N014 0 -10
R11 N012 N014 5K
R14 OUT 0 8
R9 N006 N008 2K
R10 N008 N012 1K
Q4 N006 N008 N012 0 2N3904
Q1 N002 N009 N011 0 2N3904
Q2 N001 N010 N011 0 2N3904
R2 N001 N002 200
R3 N011 N014 1K
Q3 N006 N005 N004 0 2N3906
R6 N010 0 5K
R7 OUT N010 50K
V3 IN 0 0
R1 N009 IN 5K
R8 N001 N004 100
R4 N003 N002 9K
C2 N006 N005 100p
C1 N003 N002 10p
R13 N013 N014 1K
R12 N007 OUT 1K
C3 N006 N012 .001
R5 N005 N003 1K
.op
.step temp -55 125 5

* LTspice schematic (.asc)
Version 4
SHEET 1 1664 816
WIRE -368 -408 -592 -408
WIRE 64 -408 -368 -408
WIRE 464 -408 64 -408
WIRE 656 -408 464 -408
WIRE 736 -408 656 -408
WIRE 64 -392 64 -408
WIRE 736 -392 736 -408
WIRE -592 -376 -592 -408
WIRE -272 -360 -304 -360
WIRE -160 -360 -208 -360
WIRE 64 -296 64 -312
WIRE 736 -296 736 -312
WIRE -592 -248 -592 -296
WIRE -304 -248 -304 -360
WIRE -304 -248 -592 -248
WIRE -272 -248 -304 -248
WIRE -160 -248 -160 -360
WIRE -160 -248 -192 -248
WIRE -144 -248 -160 -248
WIRE -48 -248 -64 -248
WIRE 0 -248 -48 -248
WIRE 464 -216 464 -408
WIRE -48 -168 -48 -248
WIRE -16 -168 -48 -168
WIRE 64 -168 64 -200
WIRE 64 -168 48 -168
WIRE 224 -168 64 -168
WIRE 336 -168 224 -168
WIRE 400 -168 336 -168
WIRE 64 -152 64 -168
WIRE 656 -152 656 -408
WIRE 224 -104 224 -168
WIRE 336 -104 336 -168
WIRE 464 -104 464 -120
WIRE 592 -104 464 -104
WIRE 464 -88 464 -104
WIRE 64 -56 64 -72
WIRE 160 -56 64 -56
WIRE -592 -40 -592 -248
WIRE -368 -40 -368 -408
WIRE -768 8 -832 8
WIRE -656 8 -688 8
WIRE -224 8 -304 8
WIRE -144 8 -224 8
WIRE 464 8 464 -8
WIRE 464 8 -64 8
WIRE 656 8 656 -56
WIRE 656 8 464 8
WIRE 832 8 656 8
WIRE -832 24 -832 8
WIRE 64 24 64 -56
WIRE 832 24 832 8
WIRE -224 40 -224 8
WIRE 464 72 464 8
WIRE -592 104 -592 56
WIRE -480 104 -592 104
WIRE -368 104 -368 56
WIRE -368 104 -480 104
WIRE -832 120 -832 104
WIRE 64 120 64 104
WIRE 224 120 224 -8
WIRE 224 120 64 120
WIRE 336 120 336 -40
WIRE 336 120 224 120
WIRE 400 120 336 120
WIRE 832 120 832 104
WIRE 656 136 656 8
WIRE -224 152 -224 120
WIRE -480 168 -480 104
WIRE 64 184 64 120
WIRE 464 184 464 168
WIRE 592 184 464 184
WIRE 464 200 464 184
WIRE -480 296 -480 248
WIRE 64 296 64 264
WIRE 64 296 -480 296
WIRE 464 296 464 280
WIRE 464 296 64 296
WIRE 656 296 656 232
WIRE 656 296 464 296
WIRE 752 296 656 296
WIRE 752 312 752 296
WIRE 752 408 752 392
FLAG 736 -296 0
FLAG 752 408 0
FLAG 832 120 0
FLAG -224 152 0
FLAG -832 120 0
FLAG -832 8 IN
FLAG 832 8 OUT
SYMBOL NPN 400 -216 R0
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL npn 592 -152 R0
SYMATTR InstName Q7
SYMATTR Value 2N2219A
SYMBOL npn 592 136 R0
SYMATTR InstName Q8
SYMATTR Value 2N2219A
SYMBOL PNP 400 168 M180
SYMATTR InstName Q6
SYMATTR Value 2N3906
SYMBOL VOLTAGE 736 -408 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL voltage 752 296 R0
SYMATTR InstName V2
SYMATTR Value -10
SYMBOL RES 48 168 R0
SYMATTR InstName R11
SYMATTR Value 5K
SYMBOL res 816 8 R0
SYMATTR InstName R14
SYMATTR Value 8
SYMBOL res 48 -168 R0
SYMATTR InstName R9
SYMATTR Value 2K
SYMBOL res 48 8 R0
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL npn 160 -104 R0
SYMATTR InstName Q4
SYMATTR Value 2N3904
SYMBOL npn -656 -40 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn -304 -40 M0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res -608 -392 R0
SYMATTR InstName R2
SYMATTR Value 200
SYMBOL res -496 152 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL pnp 0 -200 M180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL res -240 24 R0
SYMATTR InstName R6
SYMATTR Value 5K
SYMBOL res -48 -8 R90
SYMATTR InstName R7
SYMATTR Value 50K
SYMBOL voltage -832 8 R0
SYMATTR InstName V3
SYMATTR Value 0
SYMBOL res -672 -8 R90
SYMATTR InstName R1
SYMATTR Value 5K
SYMBOL res 48 -408 R0
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL res -176 -264 R90
SYMATTR InstName R4
SYMATTR Value 9K
SYMBOL cap 48 -184 R90
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cap -208 -376 R90
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL res 448 184 R0
SYMATTR InstName R13
SYMATTR Value 1K
SYMBOL res 448 -104 R0
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL cap 320 -104 R0
SYMATTR InstName C3
SYMATTR Value .001
SYMBOL res -48 -264 R90
SYMATTR InstName R5
SYMATTR Value 1K