kicad/demos/pic_programmer/pic_programmer.sch

EESchema Schematic File Version 2
LIBS:power,device,transistors,conn,linear,regul,74xx,cmos4000,adc-dac,memory,xilinx,special,microcontrollers,dsp,microchip,analog_switches,motorola,texas,intel,audio,interface,digital-audio,philips,display,cypress,siliconi,contrib,valves,.\pic_programmer.cache
EELAYER 23  0
EELAYER END
$Descr A4 11700 8267
Sheet 1 2
Title "JDM - COM84 PIC Programmer with 13V DC/DC converter"
Date "15 apr 2008"
Rev "2"
Comp "KiCad"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
	4850 4750 4850 5100
Wire Wire Line
	5700 1250 6100 1250
Wire Wire Line
	5700 1250 5700 1200
Connection ~ 8650 3200
Wire Wire Line
	8650 3150 8650 3200
Wire Wire Line
	7100 1600 6550 1600
Wire Wire Line
	7400 2900 7350 2900
Wire Wire Line
	7650 3300 7650 3200
Wire Wire Line
	8000 2900 7900 2900
Wire Wire Line
	8300 3200 8300 3100
Wire Wire Line
	9350 6500 9300 6500
Wire Wire Line
	9300 6500 9300 6250
Wire Wire Line
	9300 6250 8650 6250
Wire Wire Line
	9650 6750 9500 6750
Wire Wire Line
	9650 6250 9500 6250
Connection ~ 1400 6850
Wire Wire Line
	1600 6900 1600 6850
Wire Wire Line
	1600 6850 1350 6850
Wire Wire Line
	8300 3500 9200 3500
Wire Wire Line
	9200 4150 8250 4150
Wire Wire Line
	9200 3850 8250 3850
Wire Wire Line
	10150 5950 10150 6250
Wire Wire Line
	9100 6000 8700 6000
Wire Wire Line
	8700 6000 8700 5750
Wire Wire Line
	8950 6900 9100 6900
Wire Wire Line
	9100 6900 9100 6600
Wire Wire Line
	9100 6600 9150 6600
Wire Wire Line
	8700 6600 8500 6600
Wire Wire Line
	8500 6600 8500 6700
Wire Wire Line
	8000 6700 7900 6700
Wire Wire Line
	7900 6700 7900 6900
Wire Wire Line
	7900 6900 8550 6900
Wire Wire Line
	7350 6750 7350 6700
Wire Wire Line
	7350 6700 7500 6700
Wire Notes Line
	11050 5050 11050 7000
Wire Notes Line
	11050 5050 5650 5050
Wire Wire Line
	8700 5750 8650 5750
Wire Wire Line
	9300 5650 9300 5750
Wire Notes Line
	5650 5050 5650 7000
Wire Notes Line
	5650 7000 11050 7000
Wire Wire Line
	10150 6750 10150 6800
Connection ~ 9950 6000
Wire Wire Line
	9950 5950 9950 6000
Wire Wire Line
	7650 5300 7650 5250
Wire Wire Line
	10700 6050 10700 6000
Wire Wire Line
	10700 6000 10650 6000
Connection ~ 10150 6000
Wire Wire Line
	9500 6000 10250 6000
Wire Wire Line
	1700 3700 2250 3700
Wire Wire Line
	3900 4200 2250 4200
Wire Wire Line
	2250 4200 2250 3700
Connection ~ 8300 1600
Connection ~ 3400 6650
Wire Wire Line
	3400 6650 3400 6600
Connection ~ 3200 6650
Wire Wire Line
	3100 6650 3600 6650
Wire Wire Line
	4150 6750 4150 6650
Wire Wire Line
	4150 6650 4100 6650
Wire Wire Line
	3200 6650 3200 6700
Connection ~ 1950 6650
Wire Wire Line
	1950 6700 1950 6650
Wire Wire Line
	1850 6650 2300 6650
Wire Wire Line
	1400 6900 1400 6850
Wire Wire Line
	1450 6650 1350 6650
Wire Wire Line
	7600 1600 8350 1600
Wire Wire Line
	6300 4750 5350 4750
Wire Wire Line
	5350 3150 6200 3150
Wire Wire Line
	5150 1700 4950 1700
Wire Wire Line
	5450 1400 5450 1500
Wire Wire Line
	5450 1400 5500 1400
Connection ~ 6100 1400
Wire Wire Line
	6000 1400 6250 1400
Wire Wire Line
	6100 1250 6100 1400
Wire Wire Line
	6550 1200 6550 1100
Wire Wire Line
	6550 1600 6550 1650
Wire Wire Line
	6550 2600 6550 2650
Wire Wire Line
	6550 2150 6550 2200
Wire Wire Line
	3250 5100 2100 5100
Wire Wire Line
	2100 5100 2100 3500
Wire Wire Line
	2100 3500 1700 3500
Wire Wire Line
	2450 3800 2450 3150
Wire Wire Line
	2450 3800 1700 3800
Wire Wire Line
	2850 1700 2250 1700
Wire Wire Line
	2250 1700 2250 3600
Wire Wire Line
	2250 3600 1700 3600
Wire Wire Line
	2450 3150 3250 3150
Connection ~ 5400 3150
Wire Wire Line
	4800 4200 5400 4200
Wire Wire Line
	5400 4200 5400 3150
Wire Wire Line
	4850 5100 4800 5100
Wire Wire Line
	4450 1700 4400 1700
Wire Wire Line
	4850 3150 4800 3150
Connection ~ 3200 5100
Wire Wire Line
	3200 5150 3200 5100
Wire Wire Line
	3850 5200 3850 5050
Connection ~ 3850 5100
Wire Wire Line
	3900 5100 3750 5100
Connection ~ 3200 3150
Wire Wire Line
	3200 3200 3200 3150
Wire Wire Line
	3850 3250 3850 3100
Connection ~ 3850 3150
Wire Wire Line
	3900 3150 3750 3150
Connection ~ 2800 1700
Wire Wire Line
	2800 1750 2800 1700
Wire Wire Line
	3450 1800 3450 1650
Connection ~ 3450 1700
Wire Wire Line
	3500 1700 3350 1700
Wire Wire Line
	7900 2900 7900 2650
Wire Wire Line
	9200 3200 8150 3200
Connection ~ 8300 3200
Wire Wire Line
	5450 1500 5850 1500
Wire Wire Line
	5850 1500 5850 2900
Wire Wire Line
	5850 2900 6950 2900
Wire Wire Line
	7050 1850 7050 1600
Connection ~ 7050 1600
Wire Wire Line
	5700 800  5700 750 
Wire Wire Line
	5700 750  6100 750 
Wire Wire Line
	6100 750  6100 700 
$Comp
L C C9
U 1 1 464AD280
P 5700 1000
F 0 "C9" H 5750 1100 50  0000 L C
F 1 "22OnF" H 5750 900 50  0000 L C
	1    5700 1000
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR01
U 1 1 4639BB04
P 8650 2550
F 0 "#PWR01" H 8650 2650 30  0001 C C
F 1 "VCC" H 8650 2650 30  0000 C C
	1    8650 2550
	1    0    0    -1  
$EndComp
$Comp
L JUMPER JP1
U 1 1 4639BAF8
P 8650 2850
F 0 "JP1" H 8650 3000 60  0000 C C
F 1 "JUMPER" H 8650 2770 40  0000 C C
	1    8650 2850
	0    1    1    0   
$EndComp
$Comp
L DIODESCH D11
U 1 1 4639BA28
P 7150 2900
F 0 "D11" H 7150 3000 40  0000 C C
F 1 "BAT43" H 7150 2800 40  0000 C C
	1    7150 2900
	-1   0    0    1   
$EndComp
$Comp
L VCC #PWR02
U 1 1 4639BA17
P 8300 2700
F 0 "#PWR02" H 8300 2800 30  0001 C C
F 1 "VCC" H 8300 2800 30  0000 C C
	1    8300 2700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 4639B9EB
P 7650 3700
F 0 "#PWR03" H 7650 3700 30  0001 C C
F 1 "GND" H 7650 3630 30  0001 C C
	1    7650 3700
	1    0    0    -1  
$EndComp
$Comp
L LED D12
U 1 1 4639B9EA
P 7650 3500
F 0 "D12" H 7650 3600 50  0000 C C
F 1 "YELLOW-LED" H 7650 3400 50  0000 C C
F 4 "YELLOW-LED" H 7700 3650 40  0000 C C
	1    7650 3500
	0    1    1    0   
$EndComp
$Comp
L R R21
U 1 1 4639B9E9
P 7900 3200
F 0 "R21" V 7980 3200 50  0000 C C
F 1 "470" V 7900 3200 50  0000 C C
	1    7900 3200
	0    -1   -1   0   
$EndComp
$Comp
L R R20
U 1 1 4639B9B3
P 7650 2650
F 0 "R20" V 7730 2650 50  0000 C C
F 1 "2.2K" V 7650 2650 50  0000 C C
	1    7650 2650
	0    -1   -1   0   
$EndComp
$Comp
L R R19
U 1 1 4639B9B0
P 7650 2900
F 0 "R19" V 7730 2900 50  0000 C C
F 1 "2.2K" V 7650 2900 50  0000 C C
	1    7650 2900
	0    -1   -1   0   
$EndComp
$Comp
L PNP Q3
U 1 1 4639B996
P 8200 2900
F 0 "Q3" H 8350 2900 60  0000 C C
F 1 "BC307" H 8104 3050 60  0000 C C
	1    8200 2900
	1    0    0    1   
$EndComp
$Comp
L VCC #PWR04
U 1 1 4638AB33
P 7400 2650
F 0 "#PWR04" H 7400 2750 30  0001 C C
F 1 "VCC" H 7400 2750 30  0000 C C
	1    7400 2650
	1    0    0    -1  
$EndComp
Text Notes 9700 6500 0    50   ~
ADJUST for VPP = 13V
$Comp
L POT RV1
U 1 1 443D0101
P 9500 6500
F 0 "RV1" H 9500 6400 50  0000 C C
F 1 "1K" H 9500 6500 50  0000 C C
	1    9500 6500
	0    -1   -1   0   
$EndComp
$Comp
L R R18
U 1 1 44369638
P 7350 1600
F 0 "R18" V 7430 1600 50  0000 C C
F 1 "220" V 7350 1600 50  0000 C C
	1    7350 1600
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR05
U 1 1 442AABC2
P 6550 2650
F 0 "#PWR05" H 6550 2650 30  0001 C C
F 1 "GND" H 6550 2580 30  0001 C C
	1    6550 2650
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG06
U 1 1 442A8330
P 1600 6900
F 0 "#FLG06" H 1600 7170 30  0001 C C
F 1 "PWR_FLAG" H 1600 7130 30  0000 C C
	1    1600 6900
	-1   0    0    1   
$EndComp
Text Label 8400 4150 0    60   ~
CLOCK-RB6
Text Label 8350 3850 0    60   ~
DATA-RB7
Text Label 8400 3500 0    60   ~
VPP/MCLR
$Sheet
S 9200 2850 1600 1750
U 4804A5E2
F0 "pic_sockets.sch" 60
F1 "pic_sockets.sch" 60
F2 "VPP-MCLR" I L 9200 3500 60 
F3 "CLOCK-RB6" I L 9200 4150 60 
F4 "DATA-RB7" I L 9200 3850 60 
F5 "VCC_PIC" I L 9200 3200 60 
$EndSheet
Text Label 1850 3800 0    60   ~
DTR
Text Label 1850 3700 0    60   ~
CTS
Text Label 1850 3600 0    60   ~
TXD
Text Label 1850 3500 0    60   ~
RTS
Text Notes 850  6500 0    60   ~
8 to 15V
NoConn ~ 6650 5750
$Comp
L DIODESCH D10
U 1 1 442A6026
P 9300 6000
F 0 "D10" H 9300 6100 40  0000 C C
F 1 "SCHOTTKY" H 9300 5900 40  0000 C C
	1    9300 6000
	1    0    0    -1  
$EndComp
$Comp
L R R10
U 1 1 442A5F83
P 8250 6700
F 0 "R10" V 8330 6700 50  0000 C C
F 1 "5,1K" V 8250 6700 50  0000 C C
	1    8250 6700
	0    -1   -1   0   
$EndComp
$Comp
L C C4
U 1 1 442A5F61
P 8750 6900
F 0 "C4" H 8800 7000 50  0000 L C
F 1 "0" V 8800 6800 50  0000 L C
	1    8750 6900
	0    -1   -1   0   
$EndComp
$Comp
L LT1373 U4
U 1 1 442A5E20
P 7650 6000
F 0 "U4" H 8250 6500 60  0000 C C
F 1 "LT1373" H 7150 6500 60  0000 C C
	1    7650 6000
	1    0    0    -1  
$EndComp
Text Notes 6150 5200 0    60   ~
VPP (13V) power
$Comp
L GND #PWR07
U 1 1 442A58DF
P 10150 6800
F 0 "#PWR07" H 10150 6800 30  0001 C C
F 1 "GND" H 10150 6730 30  0001 C C
	1    10150 6800
	1    0    0    -1  
$EndComp
$Comp
L R R16
U 1 1 442A58DC
P 9900 6250
F 0 "R16" V 9980 6250 50  0000 C C
F 1 "62K" V 9900 6250 50  0000 C C
	1    9900 6250
	0    -1   -1   0   
$EndComp
$Comp
L R R15
U 1 1 442A58D7
P 9900 6750
F 0 "R15" V 9980 6750 50  0000 C C
F 1 "6.2K" V 9900 6750 50  0000 C C
	1    9900 6750
	0    -1   -1   0   
$EndComp
NoConn ~ 6650 6250
$Comp
L GND #PWR08
U 1 1 442A58B8
P 9150 6600
F 0 "#PWR08" H 9150 6600 30  0001 C C
F 1 "GND" H 9150 6530 30  0001 C C
	1    9150 6600
	0    -1   -1   0   
$EndComp
$Comp
L C C5
U 1 1 442A58B1
P 8900 6600
F 0 "C5" H 8950 6700 50  0000 L C
F 1 "10nF" V 9050 6450 50  0000 L C
	1    8900 6600
	0    -1   -1   0   
$EndComp
$Comp
L PWR_FLAG #FLG09
U 1 1 442A5893
P 9950 5950
F 0 "#FLG09" H 9950 6220 30  0001 C C
F 1 "PWR_FLAG" H 9950 6180 30  0000 C C
	1    9950 5950
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR010
U 1 1 442A5882
P 9300 5650
F 0 "#PWR010" H 9300 5750 30  0001 C C
F 1 "VCC" H 9300 5750 30  0000 C C
	1    9300 5650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR011
U 1 1 442A5852
P 10700 6050
F 0 "#PWR011" H 10700 6050 30  0001 C C
F 1 "GND" H 10700 5980 30  0001 C C
	1    10700 6050
	1    0    0    -1  
$EndComp
$Comp
L CP C3
U 1 1 442A584C
P 10450 6000
F 0 "C3" H 10500 6100 50  0000 L C
F 1 "22uF/25V" H 10500 5900 50  0000 L C
	1    10450 6000
	0    -1   -1   0   
$EndComp
$Comp
L VPP #PWR34
U 1 1 442A5846
P 10150 5950
F 0 "#PWR34" H 10150 6150 40  0001 C C
F 1 "VPP" H 10150 6100 40  0000 C C
	1    10150 5950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR012
U 1 1 442A580B
P 7350 6750
F 0 "#PWR012" H 7350 6750 30  0001 C C
F 1 "GND" H 7350 6680 30  0001 C C
	1    7350 6750
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR013
U 1 1 442A57CB
P 7650 5250
F 0 "#PWR013" H 7650 5350 30  0001 C C
F 1 "VCC" H 7650 5350 30  0000 C C
	1    7650 5250
	1    0    0    -1  
$EndComp
$Comp
L INDUCTOR L1
U 1 1 442A57BE
P 9000 5750
F 0 "L1" V 8950 5750 40  0000 C C
F 1 "22uH" V 9100 5750 40  0000 C C
	1    9000 5750
	0    -1   -1   0   
$EndComp
NoConn ~ 1700 3900
NoConn ~ 1700 3400
NoConn ~ 1700 3300
NoConn ~ 1700 3200
$Comp
L GND #PWR014
U 1 1 442A50C2
P 7050 2350
F 0 "#PWR014" H 7050 2350 30  0001 C C
F 1 "GND" H 7050 2280 30  0001 C C
	1    7050 2350
	1    0    0    -1  
$EndComp
$Comp
L R R17
U 1 1 442A50BF
P 7050 2100
F 0 "R17" V 7130 2100 50  0000 C C
F 1 "22K" V 7050 2100 50  0000 C C
	1    7050 2100
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR015
U 1 1 442A50B3
P 3400 6600
F 0 "#PWR015" H 3400 6700 30  0001 C C
F 1 "VCC" H 3400 6700 30  0000 C C
	1    3400 6600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR016
U 1 1 442A5095
P 4150 7150
F 0 "#PWR016" H 4150 7150 30  0001 C C
F 1 "GND" H 4150 7080 30  0001 C C
	1    4150 7150
	1    0    0    -1  
$EndComp
$Comp
L LED D9
U 1 1 442A5084
P 4150 6950
F 0 "D9" H 4150 7050 50  0000 C C
F 1 "GREEN-LED" H 4150 6850 50  0000 C C
F 4 "GREEN LED" H 4200 7100 40  0000 C C
	1    4150 6950
	0    1    1    0   
$EndComp
$Comp
L R R14
U 1 1 442A5083
P 3850 6650
F 0 "R14" V 3930 6650 50  0000 C C
F 1 "470" V 3850 6650 50  0000 C C
	1    3850 6650
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR017
U 1 1 442A5057
P 3200 7100
F 0 "#PWR017" H 3200 7100 30  0001 C C
F 1 "GND" H 3200 7030 30  0001 C C
	1    3200 7100
	1    0    0    -1  
$EndComp
$Comp
L CP C1
U 1 1 442A5056
P 3200 6900
F 0 "C1" H 3250 7000 50  0000 L C
F 1 "100uF" H 3250 6800 50  0000 L C
	1    3200 6900
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR018
U 1 1 442A5050
P 2700 6950
F 0 "#PWR018" H 2700 6950 30  0001 C C
F 1 "GND" H 2700 6880 30  0001 C C
	1    2700 6950
	1    0    0    -1  
$EndComp
$Comp
L 7805 U3
U 1 1 442A504A
P 2700 6700
F 0 "U3" H 2850 6504 60  0000 C C
F 1 "7805" H 2700 6900 60  0000 C C
	1    2700 6700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR019
U 1 1 442A5023
P 1950 7100
F 0 "#PWR019" H 1950 7100 30  0001 C C
F 1 "GND" H 1950 7030 30  0001 C C
	1    1950 7100
	1    0    0    -1  
$EndComp
$Comp
L CP C2
U 1 1 442A501D
P 1950 6900
F 0 "C2" H 2000 7000 50  0000 L C
F 1 "220uF" H 2000 6800 50  0000 L C
	1    1950 6900
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR020
U 1 1 442A500F
P 1400 6900
F 0 "#PWR020" H 1400 6900 30  0001 C C
F 1 "GND" H 1400 6830 30  0001 C C
	1    1400 6900
	1    0    0    -1  
$EndComp
$Comp
L DIODE D1
U 1 1 442A500B
P 1650 6650
F 0 "D1" H 1650 6750 40  0000 C C
F 1 "1N4004" H 1650 6550 40  0000 C C
	1    1650 6650
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P1
U 1 1 442A4FE7
P 1000 6750
F 0 "P1" V 950 6750 40  0000 C C
F 1 "CONN_2" V 1050 6750 40  0000 C C
	1    1000 6750
	-1   0    0    1   
$EndComp
Text Label 7750 1600 0    60   ~
VPP/MCLR
$Comp
L LED D8
U 1 1 442A4F5D
P 6550 2400
F 0 "D8" H 6550 2500 50  0000 C C
F 1 "RED-LED" H 6550 2300 50  0000 C C
F 4 "Low Current Led" H 6600 2550 40  0000 C C
F 5 "RED LED" H 6550 2250 40  0000 C C
	1    6550 2400
	0    1    1    0   
$EndComp
$Comp
L R R9
U 1 1 442A4F52
P 6550 1900
F 0 "R9" V 6630 1900 50  0000 C C
F 1 "2.2K" V 6550 1900 50  0000 C C
	1    6550 1900
	1    0    0    -1  
$EndComp
$Comp
L VPP #PWR23
U 1 1 442A4F48
P 6550 1100
F 0 "#PWR23" H 6550 1300 40  0001 C C
F 1 "VPP" H 6550 1250 40  0000 C C
	1    6550 1100
	1    0    0    -1  
$EndComp
$Comp
L VPP #PWR22
U 1 1 442A4F44
P 6100 700
F 0 "#PWR22" H 6100 900 40  0001 C C
F 1 "VPP" H 6100 850 40  0000 C C
	1    6100 700 
	1    0    0    -1  
$EndComp
$Comp
L PNP Q2
U 1 1 442A4F30
P 6450 1400
F 0 "Q2" H 6600 1400 60  0000 C C
F 1 "BC307" H 6354 1550 60  0000 C C
	1    6450 1400
	1    0    0    1   
$EndComp
$Comp
L R R7
U 1 1 442A4F2A
P 6100 1000
F 0 "R7" V 6180 1000 50  0000 C C
F 1 "10K" V 6100 1000 50  0000 C C
	1    6100 1000
	1    0    0    -1  
$EndComp
$Comp
L R R11
U 1 1 442A4F23
P 5750 1400
F 0 "R11" V 5830 1400 50  0000 C C
F 1 "22K" V 5750 1400 50  0000 C C
	1    5750 1400
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR021
U 1 1 442A4F1C
P 5450 1900
F 0 "#PWR021" H 5450 1900 30  0001 C C
F 1 "GND" H 5450 1830 30  0001 C C
	1    5450 1900
	1    0    0    -1  
$EndComp
Text Label 2300 1700 0    60   ~
VPP_ON
Text Label 5500 4750 0    60   ~
CLOCK-RB6
Text Label 5500 3150 0    60   ~
DATA-RB7
$Comp
L NPN Q1
U 1 1 442A4EB9
P 5350 1700
F 0 "Q1" H 5500 1700 50  0000 C C
F 1 "BC237" H 5252 1850 50  0000 C C
	1    5350 1700
	1    0    0    -1  
$EndComp
Text Label 2350 5100 0    60   ~
PC-CLOCK-OUT
$Comp
L GND #PWR022
U 1 1 442A4E06
P 1700 4000
F 0 "#PWR022" H 1700 4000 30  0001 C C
F 1 "GND" H 1700 3930 30  0001 C C
	1    1700 4000
	0    -1   -1   0   
$EndComp
Text Label 2700 4200 0    60   ~
PC-DATA-IN
Text Label 2500 3150 0    60   ~
PC-DATA-OUT
$Comp
L GND #PWR023
U 1 1 442A4DB3
P 2800 2250
F 0 "#PWR023" H 2800 2250 30  0001 C C
F 1 "GND" H 2800 2180 30  0001 C C
	1    2800 2250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR024
U 1 1 442A4DAE
P 3200 5650
F 0 "#PWR024" H 3200 5650 30  0001 C C
F 1 "GND" H 3200 5580 30  0001 C C
	1    3200 5650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR025
U 1 1 442A4DAB
P 3200 3700
F 0 "#PWR025" H 3200 3700 30  0001 C C
F 1 "GND" H 3200 3630 30  0001 C C
	1    3200 3700
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 442A4D92
P 4700 1700
F 0 "R8" V 4780 1700 50  0000 C C
F 1 "1K" V 4700 1700 50  0000 C C
	1    4700 1700
	0    -1   -1   0   
$EndComp
$Comp
L R R13
U 1 1 442A4D8D
P 5100 4750
F 0 "R13" V 5180 4750 50  0000 C C
F 1 "470" V 5100 4750 50  0000 C C
	1    5100 4750
	0    -1   -1   0   
$EndComp
$Comp
L R R12
U 1 1 442A4D85
P 5100 3150
F 0 "R12" V 5180 3150 50  0000 C C
F 1 "470" V 5100 3150 50  0000 C C
	1    5100 3150
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR026
U 1 1 442A4D75
P 4350 4500
F 0 "#PWR026" H 4350 4500 30  0001 C C
F 1 "GND" H 4350 4430 30  0001 C C
	1    4350 4500
	1    0    0    -1  
$EndComp
$Comp
L 74LS125 U2
U 4 1 442A4D6B
P 4350 4200
F 0 "U2" H 4350 4300 50  0000 L B
F 1 "74HC125" H 4400 4050 40  0000 L T
	4    4350 4200
	-1   0    0    -1  
$EndComp
$Comp
L VCC #PWR027
U 1 1 442A4D68
P 3850 4650
F 0 "#PWR027" H 3850 4750 30  0001 C C
F 1 "VCC" H 3850 4750 30  0000 C C
	1    3850 4650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR028
U 1 1 442A4D67
P 3850 5600
F 0 "#PWR028" H 3850 5600 30  0001 C C
F 1 "GND" H 3850 5530 30  0001 C C
	1    3850 5600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR029
U 1 1 442A4D66
P 4350 5400
F 0 "#PWR029" H 4350 5400 30  0001 C C
F 1 "GND" H 4350 5330 30  0001 C C
	1    4350 5400
	1    0    0    -1  
$EndComp
$Comp
L DIODESCH D7
U 1 1 442A4D65
P 3850 5400
F 0 "D7" H 3850 5500 40  0000 C C
F 1 "BAT43" H 3850 5300 40  0000 C C
	1    3850 5400
	0    -1   -1   0   
$EndComp
$Comp
L DIODESCH D6
U 1 1 442A4D64
P 3850 4850
F 0 "D6" H 3850 4950 40  0000 C C
F 1 "BAT43" H 3850 4750 40  0000 C C
	1    3850 4850
	0    -1   -1   0   
$EndComp
$Comp
L R R6
U 1 1 442A4D63
P 3200 5400
F 0 "R6" V 3280 5400 50  0000 C C
F 1 "10K" V 3200 5400 50  0000 C C
	1    3200 5400
	1    0    0    -1  
$EndComp
$Comp
L R R5
U 1 1 442A4D62
P 3500 5100
F 0 "R5" V 3580 5100 50  0000 C C
F 1 "10K" V 3500 5100 50  0000 C C
	1    3500 5100
	0    -1   -1   0   
$EndComp
$Comp
L 74LS125 U2
U 3 1 442A4D61
P 4350 5100
F 0 "U2" H 4350 5200 50  0000 L B
F 1 "74HC125" H 4400 4950 40  0000 L T
	3    4350 5100
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR030
U 1 1 442A4D60
P 3850 2700
F 0 "#PWR030" H 3850 2800 30  0001 C C
F 1 "VCC" H 3850 2800 30  0000 C C
	1    3850 2700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR031
U 1 1 442A4D5F
P 3850 3650
F 0 "#PWR031" H 3850 3650 30  0001 C C
F 1 "GND" H 3850 3580 30  0001 C C
	1    3850 3650
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR032
U 1 1 442A4D5E
P 4350 3450
F 0 "#PWR032" H 4350 3450 30  0001 C C
F 1 "GND" H 4350 3380 30  0001 C C
	1    4350 3450
	1    0    0    -1  
$EndComp
$Comp
L DIODESCH D5
U 1 1 442A4D5D
P 3850 3450
F 0 "D5" H 3850 3550 40  0000 C C
F 1 "BAT43" H 3850 3350 40  0000 C C
	1    3850 3450
	0    -1   -1   0   
$EndComp
$Comp
L DIODESCH D4
U 1 1 442A4D5C
P 3850 2900
F 0 "D4" H 3850 3000 40  0000 C C
F 1 "BAT43" H 3850 2800 40  0000 C C
	1    3850 2900
	0    -1   -1   0   
$EndComp
$Comp
L R R4
U 1 1 442A4D5B
P 3200 3450
F 0 "R4" V 3280 3450 50  0000 C C
F 1 "10K" V 3200 3450 50  0000 C C
	1    3200 3450
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 442A4D5A
P 3500 3150
F 0 "R3" V 3580 3150 50  0000 C C
F 1 "10K" V 3500 3150 50  0000 C C
	1    3500 3150
	0    -1   -1   0   
$EndComp
$Comp
L 74LS125 U2
U 2 1 442A4D59
P 4350 3150
F 0 "U2" H 4350 3250 50  0000 L B
F 1 "74HC125" H 4400 3000 40  0000 L T
	2    4350 3150
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR033
U 1 1 442A4D41
P 3450 1250
F 0 "#PWR033" H 3450 1350 30  0001 C C
F 1 "VCC" H 3450 1350 30  0000 C C
	1    3450 1250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR034
U 1 1 442A4D3B
P 3450 2200
F 0 "#PWR034" H 3450 2200 30  0001 C C
F 1 "GND" H 3450 2130 30  0001 C C
	1    3450 2200
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR035
U 1 1 442A4D38
P 3950 2000
F 0 "#PWR035" H 3950 2000 30  0001 C C
F 1 "GND" H 3950 1930 30  0001 C C
	1    3950 2000
	1    0    0    -1  
$EndComp
$Comp
L DIODESCH D3
U 1 1 442A4D25
P 3450 2000
F 0 "D3" H 3450 2100 40  0000 C C
F 1 "BAT43" H 3450 1900 40  0000 C C
	1    3450 2000
	0    -1   -1   0   
$EndComp
$Comp
L DIODESCH D2
U 1 1 442A4D1B
P 3450 1450
F 0 "D2" H 3450 1550 40  0000 C C
F 1 "BAT43" H 3450 1350 40  0000 C C
	1    3450 1450
	0    -1   -1   0   
$EndComp
$Comp
L R R2
U 1 1 442A4CFB
P 2800 2000
F 0 "R2" V 2880 2000 50  0000 C C
F 1 "10K" V 2800 2000 50  0000 C C
	1    2800 2000
	1    0    0    -1  
$EndComp
$Comp
L R R1
U 1 1 442A4CF4
P 3100 1700
F 0 "R1" V 3180 1700 50  0000 C C
F 1 "10K" V 3100 1700 50  0000 C C
	1    3100 1700
	0    -1   -1   0   
$EndComp
$Comp
L 74LS125 U2
U 1 1 442A4CC8
P 3950 1700
F 0 "U2" H 3950 1800 50  0000 L B
F 1 "74HC125" H 4000 1550 40  0000 L T
	1    3950 1700
	1    0    0    -1  
$EndComp
$Comp
L DB9 J1
U 1 1 442A4C93
P 1250 3600
F 0 "J1" H 1250 4150 70  0000 C C
F 1 "DB9-FEMAL" H 1250 3050 70  0000 C C
	1    1250 3600
	-1   0    0    1   
$EndComp
$EndSCHEMATC