Apple-2-HW/unified_retro_keyboard
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4b18af964a
unified_retro_keyboard/hardware/interface-osi/addon.sch
Dave e415d43c84 Update addon board updates 
- Add diode to C5 to prevent discharge into 5V

- allow selection of default ON or OFF soft switch.
2020-05-27 19:23:34 -05:00

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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "OSI ~RESET~ and SHIFTLOCK circuits"
Date "2020-05-27"
Rev "1.1"
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Device:R_US R6
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F 0 "R6" V 6000 5150 50 0000 C CNN
F 1 "100k" V 5800 5150 50 0000 C CNN
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F 3 "~" H 5900 5150 50 0001 C CNN
1 5900 5150
0 -1 -1 0
$EndComp
$Comp
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F 0 "R5" V 5900 4500 50 0000 C CNN
F 1 "10k" V 5700 4500 50 0000 C CNN
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F 3 "~" H 5800 4500 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6100 5150
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 5800 4300
Wire Wire Line
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Connection ~ 5250 5150
Wire Wire Line
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F 1 "GND" H 5255 5527 50 0000 C CNN
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F 3 "" H 5250 5700 50 0001 C CNN
1 5250 5700
1 0 0 -1
$EndComp
$Comp
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F 3 "~" H 5250 5450 50 0001 C CNN
1 5250 5450
-1 0 0 1
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Wire Wire Line
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F 3 "~" H 3800 1550 50 0001 C CNN
1 3800 1550
1 0 0 -1
$EndComp
$Comp
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F 1 "6.8uF" H 3915 2055 50 0000 L CNN
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F 3 "~" H 3800 2100 50 0001 C CNN
1 3800 2100
1 0 0 -1
$EndComp
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F 1 "GND" H 3805 2177 50 0000 C CNN
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F 3 "" H 3800 2350 50 0001 C CNN
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1 0 0 -1
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F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 9300 4150 50 0001 C CNN
4 9300 4150
0 -1 -1 0
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F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7900 2500 50 0001 C CNN
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Wire Wire Line
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Wire Wire Line
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F 3 "" H 3150 5600 50 0001 C CNN
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$Comp
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F 3 "" H 3600 3550 50 0001 C CNN
1 3600 3550
1 0 0 -1
$EndComp
$Comp
L Device:C C1
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F 1 "0.33uF" H 3250 5550 50 0000 L CNN
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F 3 "~" H 3600 5450 50 0001 C CNN
1 3600 5450
-1 0 0 1
$EndComp
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F 3 "" H 3600 5700 50 0001 C CNN
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1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "" H 3800 800 50 0001 C CNN
1 3800 800
1 0 0 -1
$EndComp
$Comp
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F 1 "+5V" H 9465 5573 50 0000 C CNN
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F 3 "" H 9450 5400 50 0001 C CNN
1 9450 5400
1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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F 3 "~" H 6950 2850 50 0001 C CNN
1 6950 2850
1 0 0 -1
$EndComp
$Comp
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F 2 "" H 6950 3100 50 0001 C CNN
F 3 "" H 6950 3100 50 0001 C CNN
1 6950 3100
1 0 0 -1
$EndComp
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F 3 "~" H 6700 2500 50 0001 C CNN
1 6700 2500
0 1 1 0
$EndComp
$Comp
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1 3800 1050
1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3800 1750
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Connection ~ 3800 1350
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6950 2500
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 5600 1750
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "~" H 8600 2800 50 0001 C CNN
1 8600 2800
-1 0 0 1
$EndComp
Connection ~ 8600 2500
Wire Wire Line
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F 3 "" H 8600 3100 50 0001 C CNN
1 8600 3100
1 0 0 -1
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$Comp
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F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 4200 1375 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 4200 1550 50 0001 C CNN
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0 -1 -1 0
$EndComp
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Wire Wire Line
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Connection ~ 4200 1750
Wire Wire Line
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Wire Wire Line
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Connection ~ 3800 1300
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 1 "GND" H 2955 2177 50 0000 C CNN
F 2 "" H 2950 2350 50 0001 C CNN
F 3 "" H 2950 2350 50 0001 C CNN
1 2950 2350
1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "~" H 3600 4400 50 0001 C CNN
1 3600 4400
1 0 0 -1
$EndComp
Connection ~ 3600 4700
$Comp
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F 3 "~" H 3600 3850 50 0001 C CNN
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$EndComp
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Wire Wire Line
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Connection ~ 3600 4050
Text Notes 2350 4950 0 50 ~ 0
Debounce Time approx 40 msec
Text Notes 3400 2800 0 50 ~ 0
Reset Delay time: about 3.3 sec\nReset delay is approx. proportional to 5 sec/uF * C1 value
Text Notes 7200 3100 0 50 ~ 0
~RESET~ pulse is approx 50 usec.
$Comp
L 4xxx:4066 U1
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$Comp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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Wire Wire Line
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Wire Wire Line
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Text Label 1150 2500 0 50 ~ 0
ShiftLock1
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Break1
Wire Wire Line
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Text GLabel 1550 2900 2 50 Input ~ 0
Row0
Text GLabel 1550 3000 2 50 Input ~ 0
Col0
Text GLabel 1550 3100 2 50 Input ~ 0
ShifLockLED+
Text GLabel 1550 3200 2 50 Input ~ 0
ShiftLockLED-
Text GLabel 9800 4900 2 50 Input ~ 0
Row0
Text GLabel 9800 3650 2 50 Input ~ 0
Col0
Text GLabel 9800 5550 2 50 Input ~ 0
ShifLockLED+
Text GLabel 9800 5700 2 50 Input ~ 0
ShiftLockLED-
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Wire Wire Line
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Wire Wire Line
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Text GLabel 10700 2500 2 50 Input ~ 0
~RESET
Text GLabel 1550 3400 2 50 Input ~ 0
~RESET
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Wire Wire Line
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Connection ~ 1250 3500
Wire Wire Line
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F 3 "~" H 1380 6330 50 0001 C CNN
1 1380 6330
1 0 0 -1
$EndComp
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Wire Wire Line
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-1 0 0 1
$EndComp
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Wire Wire Line
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NoConn ~ 950 2400
NoConn ~ 950 2600
NoConn ~ 950 3300
Text Label 880 6330 0 50 ~ 0
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F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 8750 2250 50 0001 C CNN
1 8750 2250
0 -1 -1 0
$EndComp
$Comp
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F 3 "~" H 8750 1750 50 0001 C CNN
1 8750 1750
1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Connection ~ 8750 2500
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 8900 5700 50 0001 C CNN
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1 0 0 -1
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Wire Wire Line
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$Comp
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F 3 "" H 8400 5950 50 0001 C CNN
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1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "" H 8750 1050 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
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0 -1 -1 0
$EndComp
$Comp
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F 3 "~" H 750 2800 50 0001 C CNN
1 750 2800
-1 0 0 -1
$EndComp
$Comp
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F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 10050 2325 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 10050 2500 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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$Comp
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F 3 "~" H 2230 6930 50 0001 C CNN
1 2230 6930
-1 0 0 1
$EndComp
Wire Wire Line
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Wire Wire Line
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Connection ~ 1530 6330
Wire Wire Line
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Wire Wire Line
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Connection ~ 1530 7480
$Comp
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F 0 "U2" H 4950 2067 50 0000 C CNN
F 1 "74HC14" H 4950 1976 50 0000 C CNN
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F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 4950 1750 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L 74xx:74HC14 U2
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F 0 "U2" H 9300 2817 50 0000 C CNN
F 1 "74HC14" H 9300 2726 50 0000 C CNN
F 2 "" H 9300 2500 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 9300 2500 50 0001 C CNN
1 9300 2500
1 0 0 -1
$EndComp
$Comp
L 74xx:74HC14 U2
U 3 1 5FD4C240
P 6050 2500
F 0 "U2" H 6050 2817 50 0000 C CNN
F 1 "74HC14" H 6050 2726 50 0000 C CNN
F 2 "" H 6050 2500 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 6050 2500 50 0001 C CNN
3 6050 2500
1 0 0 -1
$EndComp
$Comp
L 74xx:74HC14 U2
U 4 1 5FD4CE49
P 6500 5150
F 0 "U2" H 6500 5467 50 0000 C CNN
F 1 "74HC14" H 6500 5376 50 0000 C CNN
F 2 "" H 6500 5150 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 6500 5150 50 0001 C CNN
4 6500 5150
1 0 0 -1
$EndComp
$Comp
L 74xx:74HC14 U2
U 5 1 5FD4D9F0
P 6500 4300
F 0 "U2" H 6500 4617 50 0000 C CNN
F 1 "74HC14" H 6500 4526 50 0000 C CNN
F 2 "" H 6500 4300 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 6500 4300 50 0001 C CNN
5 6500 4300
1 0 0 -1
$EndComp
$Comp
L 74xx:74HC14 U2
U 6 1 5FD4E6ED
P 4550 4700
F 0 "U2" H 4550 5017 50 0000 C CNN
F 1 "74HC14" H 4550 4926 50 0000 C CNN
F 2 "" H 4550 4700 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 4550 4700 50 0001 C CNN
6 4550 4700
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U2
U 7 1 61CB40D7
P 1530 6930
F 0 "U2" H 1760 6976 50 0000 L CNN
F 1 "74HC14" H 1760 6885 50 0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 1530 6930 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 1530 6930 50 0001 C CNN
7 1530 6930
1 0 0 -1
$EndComp
$Comp
L Diode:1N914 D5
U 1 1 5F1DB8C4
P 8750 1350
F 0 "D5" V 8850 1300 50 0000 C CNN
F 1 "1N914" V 8650 1200 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8750 1175 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 8750 1350 50 0001 C CNN
1 8750 1350
0 -1 -1 0
$EndComp
Wire Wire Line
8750 1200 8750 1050
$Comp
L Connector_Generic:Conn_02x03_Odd_Even JP1
U 1 1 5F1F3BF6
P 8400 4300
F 0 "JP1" H 8450 4617 50 0000 C CNN
F 1 "ShiftLock_Select" H 8450 4526 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical" H 8400 4300 50 0001 C CNN
F 3 "~" H 8400 4300 50 0001 C CNN
1 8400 4300
1 0 0 1
$EndComp
Wire Wire Line
7150 4200 8200 4200
Wire Wire Line
7150 3850 7150 4200
Wire Wire Line
7050 4650 7050 4400
Wire Wire Line
7050 4400 8200 4400
Connection ~ 7050 4650
Text Notes 7400 4200 0 50 ~ 0
Mechanical
Text Notes 7400 4300 0 50 ~ 0
Soft Initial ON
Text Notes 7400 4400 0 50 ~ 0
Soft Initital OFF
Wire Wire Line
8700 4200 8900 4200
Connection ~ 8900 4200
Wire Wire Line
8900 4200 8900 4300
Wire Wire Line
8900 4300 8700 4300
Connection ~ 8900 4300
Wire Wire Line
8900 4300 8900 4400
Wire Wire Line
8700 4400 8900 4400
Connection ~ 8900 4400
Wire Wire Line
8900 4400 8900 5400
Wire Wire Line
9300 4900 9800 4900
Text Notes 1150 2690 0 50 ~ 0
ShiftLock2
Text Notes 1150 2290 0 50 ~ 0
Break2
$EndSCHEMATC
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