Apple-2-HW/unified_retro_keyboard
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973602856f
unified_retro_keyboard/hardware/interface-osi/special_keys.sch
Dave 14248df6fe mechanical fit and buildability fixes 
- Moved header slightly forward

- Moved interface mount holes do reduce interference with case mount holes

- For all keys in classic keyboard, add option for either through-hole or SMT
diodes and resistors.
2020-06-23 17:21:38 -05:00

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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 3
Title "OSI Interface"
Date "2020-04-23"
Rev "1.2"
Comp "OSIWeb.org"
Comment1 "Reset and ShiftLock circuits"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text HLabel 1800 4250 0 50 UnSpc ~ 0
ShiftLock_1
Text HLabel 1750 5350 0 50 UnSpc ~ 0
ShiftLock_2
Text HLabel 8400 5350 2 50 Output ~ 0
ShiftLock_LED+
Text HLabel 8400 5550 2 50 Output ~ 0
ShiftLock_LED-
Text HLabel 1750 1400 0 50 UnSpc ~ 0
Break_1
Text HLabel 1750 1800 0 50 UnSpc ~ 0
Break_2
Text HLabel 9700 2550 2 50 Output ~ 0
~RESET
$Comp
L Device:R_US R16
U 1 1 60F9ED41
P 5000 5350
F 0 "R16" V 5100 5350 50 0000 C CNN
F 1 "220k" V 4900 5350 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5040 5340 50 0001 C CNN
F 3 "~" H 5000 5350 50 0001 C CNN
1 5000 5350
0 -1 -1 0
$EndComp
$Comp
L Device:R_US R15
U 1 1 60FA15B9
P 4900 4700
F 0 "R15" V 5000 4700 50 0000 C CNN
F 1 "22k" V 4800 4700 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4940 4690 50 0001 C CNN
F 3 "~" H 4900 4700 50 0001 C CNN
1 4900 4700
1 0 0 -1
$EndComp
Wire Wire Line
5150 5350 5200 5350
Wire Wire Line
5200 5350 5200 5000
Wire Wire Line
5200 5000 6000 5000
Wire Wire Line
6000 5000 6000 4500
Wire Wire Line
6000 4500 5900 4500
Connection ~ 5200 5350
Wire Wire Line
5200 5350 5300 5350
Connection ~ 6000 4500
Wire Wire Line
5300 4500 4900 4500
Wire Wire Line
4900 4500 4900 4550
Wire Wire Line
4900 4850 6150 4850
Wire Wire Line
6150 4850 6150 5350
Wire Wire Line
6150 5350 5900 5350
Connection ~ 4900 4500
Wire Wire Line
4850 5350 4350 5350
Connection ~ 4350 5350
Wire Wire Line
4350 5350 4350 5500
$Comp
L power:GND #PWR031
U 1 1 60FB81DD
P 4350 5900
F 0 "#PWR031" H 4350 5650 50 0001 C CNN
F 1 "GND" H 4355 5727 50 0000 C CNN
F 2 "" H 4350 5900 50 0001 C CNN
F 3 "" H 4350 5900 50 0001 C CNN
1 4350 5900
1 0 0 -1
$EndComp
$Comp
L Device:C C19
U 1 1 60FCB99A
P 4350 5650
F 0 "C19" H 4400 5550 50 0000 L CNN
F 1 "0.1uF" H 4000 5750 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 4388 5500 50 0001 C CNN
F 3 "~" H 4350 5650 50 0001 C CNN
1 4350 5650
-1 0 0 1
$EndComp
Wire Wire Line
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$Comp
L Device:R_US R14
U 1 1 60FF7380
P 3000 1600
F 0 "R14" H 3068 1646 50 0000 L CNN
F 1 "1M" H 3068 1555 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3040 1590 50 0001 C CNN
F 3 "~" H 3000 1600 50 0001 C CNN
1 3000 1600
1 0 0 -1
$EndComp
$Comp
L Device:C C18
U 1 1 60FF7386
P 3000 2150
F 0 "C18" H 3115 2196 50 0000 L CNN
F 1 "6.8 uF" H 3115 2105 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 3038 2000 50 0001 C CNN
F 3 "~" H 3000 2150 50 0001 C CNN
1 3000 2150
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR030
U 1 1 60FF7396
P 3000 2400
F 0 "#PWR030" H 3000 2150 50 0001 C CNN
F 1 "GND" H 3005 2227 50 0000 C CNN
F 2 "" H 3000 2400 50 0001 C CNN
F 3 "" H 3000 2400 50 0001 C CNN
1 3000 2400
1 0 0 -1
$EndComp
Wire Wire Line
3000 2400 3000 2300
$Comp
L 4xxx:4066 U11
U 1 1 60FFF569
P 7750 4250
F 0 "U11" V 7796 4122 50 0000 R CNN
F 1 "4066" V 7705 4122 50 0000 R CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7750 4250 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7750 4250 50 0001 C CNN
1 7750 4250
0 -1 -1 0
$EndComp
$Comp
L 4xxx:4066 U11
U 2 1 6100162B
P 4350 4900
F 0 "U11" V 4396 4772 50 0000 R CNN
F 1 "4066" V 4305 4772 50 0000 R CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4350 4900 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 4350 4900 50 0001 C CNN
2 4350 4900
0 -1 -1 0
$EndComp
$Comp
L 4xxx:4066 U11
U 3 1 61001D7C
P 7650 5550
F 0 "U11" V 7696 5422 50 0000 R CNN
F 1 "4066" V 7605 5422 50 0000 R CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7650 5550 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7650 5550 50 0001 C CNN
3 7650 5550
1 0 0 -1
$EndComp
$Comp
L 4xxx:4066 U11
U 4 1 6100250F
P 7100 2550
F 0 "U11" H 7100 2377 50 0000 C CNN
F 1 "4066" H 7100 2286 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7100 2550 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7100 2550 50 0001 C CNN
4 7100 2550
-1 0 0 -1
$EndComp
Wire Wire Line
4350 5350 4350 5200
Wire Wire Line
4350 4600 4350 4500
Wire Wire Line
4350 4500 4900 4500
Wire Wire Line
1750 5350 2250 5350
Wire Wire Line
2250 5350 2250 5800
$Comp
L power:GND #PWR026
U 1 1 61054316
P 2250 5800
F 0 "#PWR026" H 2250 5550 50 0001 C CNN
F 1 "GND" H 2255 5627 50 0000 C CNN
F 2 "" H 2250 5800 50 0001 C CNN
F 3 "" H 2250 5800 50 0001 C CNN
1 2250 5800
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR027
U 1 1 6105BADF
P 2700 3750
F 0 "#PWR027" H 2700 3600 50 0001 C CNN
F 1 "+5V" H 2715 3923 50 0000 C CNN
F 2 "" H 2700 3750 50 0001 C CNN
F 3 "" H 2700 3750 50 0001 C CNN
1 2700 3750
1 0 0 -1
$EndComp
$Comp
L Device:C C17
U 1 1 6106E29B
P 2700 5650
F 0 "C17" H 2750 5550 50 0000 L CNN
F 1 "0.33uF" H 2350 5750 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 2738 5500 50 0001 C CNN
F 3 "~" H 2700 5650 50 0001 C CNN
1 2700 5650
-1 0 0 1
$EndComp
Wire Wire Line
2700 4900 2700 5500
$Comp
L power:GND #PWR028
U 1 1 610755A7
P 2700 5900
F 0 "#PWR028" H 2700 5650 50 0001 C CNN
F 1 "GND" H 2705 5727 50 0000 C CNN
F 2 "" H 2700 5900 50 0001 C CNN
F 3 "" H 2700 5900 50 0001 C CNN
1 2700 5900
1 0 0 -1
$EndComp
Wire Wire Line
2700 5900 2700 5800
Wire Wire Line
3950 4900 4000 4900
Connection ~ 4000 4900
Wire Wire Line
4000 4900 4050 4900
Wire Wire Line
7750 3950 7750 3850
Wire Wire Line
7750 4550 7750 4750
$Comp
L power:+5V #PWR029
U 1 1 6119EF3F
P 3000 850
F 0 "#PWR029" H 3000 700 50 0001 C CNN
F 1 "+5V" H 3015 1023 50 0000 C CNN
F 2 "" H 3000 850 50 0001 C CNN
F 3 "" H 3000 850 50 0001 C CNN
1 3000 850
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR035
U 1 1 61245055
P 8250 5150
F 0 "#PWR035" H 8250 5000 50 0001 C CNN
F 1 "+5V" H 8265 5323 50 0000 C CNN
F 2 "" H 8250 5150 50 0001 C CNN
F 3 "" H 8250 5150 50 0001 C CNN
1 8250 5150
1 0 0 -1
$EndComp
Wire Wire Line
8250 5150 8250 5350
Wire Wire Line
8250 5350 8400 5350
Text HLabel 8400 3850 2 50 Input ~ 0
Col0
Text HLabel 8400 4750 2 50 Output ~ 0
Row0
$Comp
L Device:C C20
U 1 1 61431129
P 6150 2900
F 0 "C20" H 6265 2946 50 0000 L CNN
F 1 "0.1 uF" H 6265 2855 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 6188 2750 50 0001 C CNN
F 3 "~" H 6150 2900 50 0001 C CNN
1 6150 2900
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR032
U 1 1 6143112F
P 6150 3150
F 0 "#PWR032" H 6150 2900 50 0001 C CNN
F 1 "GND" H 6155 2977 50 0000 C CNN
F 2 "" H 6150 3150 50 0001 C CNN
F 3 "" H 6150 3150 50 0001 C CNN
1 6150 3150
1 0 0 -1
$EndComp
Wire Wire Line
6150 3150 6150 3050
$Comp
L Device:R_US R17
U 1 1 614646B8
P 5900 2550
F 0 "R17" V 5695 2550 50 0000 C CNN
F 1 "1k" V 5786 2550 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5940 2540 50 0001 C CNN
F 3 "~" H 5900 2550 50 0001 C CNN
1 5900 2550
0 1 1 0
$EndComp
$Comp
L Device:R_US R13
U 1 1 614BA7F2
P 3000 1100
F 0 "R13" H 3068 1146 50 0000 L CNN
F 1 "1k" H 3068 1055 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3040 1090 50 0001 C CNN
F 3 "~" H 3000 1100 50 0001 C CNN
1 3000 1100
1 0 0 -1
$EndComp
Wire Wire Line
3000 1400 1750 1400
Wire Wire Line
3000 1250 3000 1350
Wire Wire Line
3850 1800 3400 1800
Wire Wire Line
3000 1750 3000 1800
Connection ~ 3000 1800
Wire Wire Line
3000 1800 3000 2000
Connection ~ 3000 1400
Wire Wire Line
3000 1400 3000 1450
Wire Wire Line
4450 1800 4800 1800
Wire Wire Line
6150 2550 6150 2750
Wire Wire Line
7100 1800 7100 2250
Wire Wire Line
6150 2550 6050 2550
Connection ~ 6150 2550
Wire Wire Line
5750 2550 5550 2550
Wire Wire Line
4950 2550 4800 2550
Wire Wire Line
4800 2550 4800 1800
Connection ~ 4800 1800
Wire Wire Line
4800 1800 7100 1800
Wire Wire Line
6150 2550 6800 2550
Wire Wire Line
7400 2550 7800 2550
Wire Wire Line
7800 3000 7800 3150
Wire Wire Line
7800 2700 7800 2550
$Comp
L Device:R_US R18
U 1 1 61505BC8
P 7800 2850
F 0 "R18" H 7868 2896 50 0000 L CNN
F 1 "1K" H 7868 2805 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 7840 2840 50 0001 C CNN
F 3 "~" H 7800 2850 50 0001 C CNN
1 7800 2850
-1 0 0 1
$EndComp
Connection ~ 7800 2550
Wire Wire Line
7800 2550 8050 2550
$Comp
L power:GND #PWR034
U 1 1 6170BBEC
P 7800 3150
F 0 "#PWR034" H 7800 2900 50 0001 C CNN
F 1 "GND" H 7805 2977 50 0000 C CNN
F 2 "" H 7800 3150 50 0001 C CNN
F 3 "" H 7800 3150 50 0001 C CNN
1 7800 3150
1 0 0 -1
$EndComp
Wire Wire Line
3400 1450 3400 1350
Wire Wire Line
3400 1750 3400 1800
Connection ~ 3400 1800
Wire Wire Line
3400 1800 3000 1800
Wire Wire Line
3000 1350 3400 1350
Connection ~ 3000 1350
Wire Wire Line
3000 1350 3000 1400
Wire Wire Line
3000 850 3000 950
Wire Wire Line
1750 1800 2150 1800
Wire Wire Line
2150 1800 2150 2400
$Comp
L power:GND #PWR025
U 1 1 617A42C5
P 2150 2400
F 0 "#PWR025" H 2150 2150 50 0001 C CNN
F 1 "GND" H 2155 2227 50 0000 C CNN
F 2 "" H 2150 2400 50 0001 C CNN
F 3 "" H 2150 2400 50 0001 C CNN
1 2150 2400
1 0 0 -1
$EndComp
Wire Wire Line
9700 2550 9300 2550
Wire Wire Line
1800 4250 2700 4250
Wire Wire Line
2700 4900 2700 4750
Wire Wire Line
2700 4250 2700 4450
$Comp
L Device:R_US R12
U 1 1 61058683
P 2700 4600
F 0 "R12" H 2600 4750 50 0000 L CNN
F 1 "100k" H 2450 4550 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2740 4590 50 0001 C CNN
F 3 "~" H 2700 4600 50 0001 C CNN
1 2700 4600
1 0 0 -1
$EndComp
Connection ~ 2700 4900
$Comp
L Device:R_US R11
U 1 1 61C4846D
P 2700 4050
F 0 "R11" H 2600 4200 50 0000 L CNN
F 1 "1k" H 2450 4000 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2740 4040 50 0001 C CNN
F 3 "~" H 2700 4050 50 0001 C CNN
1 2700 4050
1 0 0 -1
$EndComp
Wire Wire Line
2700 3900 2700 3750
Wire Wire Line
2700 4250 2700 4200
Connection ~ 2700 4250
Text Notes 1350 5150 0 50 ~ 0
Debounce Time approx 40 msec
Text Notes 3190 2440 0 50 ~ 0
Reset Delay time: about 3 sec\n
Text Notes 4830 3110 0 50 ~ 0
~RESET~ pulse is approx 100 usec.
$Comp
L 4xxx:4066 U11
U 5 1 61CB40DD
P 5410 6860
F 0 "U11" H 5640 6906 50 0000 L CNN
F 1 "4066" H 5640 6815 50 0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 5410 6860 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 5410 6860 50 0001 C CNN
5 5410 6860
1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
5410 6260 5760 6260
Wire Wire Line
6110 6260 6110 6360
Wire Wire Line
6110 7360 6110 7410
Wire Wire Line
6110 7410 5760 7410
Wire Wire Line
5410 7410 5410 7360
$Comp
L power:GND #PWR038
U 1 1 61CB40E9
P 5760 7460
F 0 "#PWR038" H 5760 7210 50 0001 C CNN
F 1 "GND" H 5765 7287 50 0000 C CNN
F 2 "" H 5760 7460 50 0001 C CNN
F 3 "" H 5760 7460 50 0001 C CNN
1 5760 7460
1 0 0 -1
$EndComp
Wire Wire Line
5760 7460 5760 7410
Connection ~ 5760 7410
Wire Wire Line
5760 7410 5410 7410
$Comp
L power:+5V #PWR037
U 1 1 61CB40F2
P 5760 6160
F 0 "#PWR037" H 5760 6010 50 0001 C CNN
F 1 "+5V" H 5775 6333 50 0000 C CNN
F 2 "" H 5760 6160 50 0001 C CNN
F 3 "" H 5760 6160 50 0001 C CNN
1 5760 6160
1 0 0 -1
$EndComp
Wire Wire Line
5760 6160 5760 6260
Connection ~ 5760 6260
Wire Wire Line
5760 6260 6110 6260
$Comp
L Device:C C21
U 1 1 61FD5372
P 8050 1900
F 0 "C21" H 8165 1946 50 0000 L CNN
F 1 "10uF" H 8165 1855 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 8088 1750 50 0001 C CNN
F 3 "~" H 8050 1900 50 0001 C CNN
1 8050 1900
1 0 0 -1
$EndComp
Wire Wire Line
8050 2550 8050 2450
Connection ~ 8050 2550
Wire Wire Line
8050 2550 8200 2550
Wire Wire Line
8050 2150 8050 2050
Text Notes 5950 1400 0 50 ~ 0
Power on ~RESET~ approx. 18 msec for 10 uF C21.
Wire Wire Line
7750 3850 8400 3850
Wire Wire Line
4000 3950 4000 4900
Wire Wire Line
4000 3950 6000 3950
Wire Wire Line
7450 4250 7350 4250
Wire Wire Line
7750 4750 7950 4750
Wire Wire Line
8400 4750 8250 4750
Wire Wire Line
7350 5550 7250 5550
Wire Wire Line
7250 5550 7250 5850
$Comp
L power:GND #PWR033
U 1 1 62047B17
P 7250 5850
F 0 "#PWR033" H 7250 5600 50 0001 C CNN
F 1 "GND" H 7255 5677 50 0000 C CNN
F 2 "" H 7250 5850 50 0001 C CNN
F 3 "" H 7250 5850 50 0001 C CNN
1 7250 5850
1 0 0 -1
$EndComp
Wire Wire Line
7350 4250 7350 4400
Wire Wire Line
7350 5200 7650 5200
Wire Wire Line
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Wire Wire Line
8400 5550 7950 5550
Text Notes 6100 4400 0 50 ~ 0
Mechanical
Text Notes 6090 4500 0 50 ~ 0
Soft Start ON
Wire Wire Line
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Wire Wire Line
9000 2550 8800 2550
$Comp
L power:+5V #PWR039
U 1 1 621280EA
P 8050 1350
F 0 "#PWR039" H 8050 1200 50 0001 C CNN
F 1 "+5V" H 8065 1523 50 0000 C CNN
F 2 "" H 8050 1350 50 0001 C CNN
F 3 "" H 8050 1350 50 0001 C CNN
1 8050 1350
1 0 0 -1
$EndComp
$Comp
L 74xx:74HC14 U10
U 1 1 5FC352BA
P 5600 4500
F 0 "U10" H 5600 4817 50 0000 C CNN
F 1 "74HC14" H 5600 4726 50 0000 C CNN
F 2 "" H 5600 4500 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 5600 4500 50 0001 C CNN
1 5600 4500
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 2 1 60F90788
P 5600 5350
F 0 "U10" H 5600 5667 50 0000 C CNN
F 1 "74HC14" H 5600 5576 50 0000 C CNN
F 2 "" H 5600 5350 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 5600 5350 50 0001 C CNN
2 5600 5350
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 3 1 60F91229
P 3650 4900
F 0 "U10" H 3650 5217 50 0000 C CNN
F 1 "74HC14" H 3650 5126 50 0000 C CNN
F 2 "" H 3650 4900 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 3650 4900 50 0001 C CNN
3 3650 4900
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 4 1 60F9322B
P 4150 1800
F 0 "U10" H 4150 2117 50 0000 C CNN
F 1 "74HC14" H 4150 2026 50 0000 C CNN
F 2 "" H 4150 1800 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 4150 1800 50 0001 C CNN
4 4150 1800
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 6 1 60F956F9
P 8500 2550
F 0 "U10" H 8500 2867 50 0000 C CNN
F 1 "74HC14" H 8500 2776 50 0000 C CNN
F 2 "" H 8500 2550 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 8500 2550 50 0001 C CNN
6 8500 2550
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 5 1 6168AA55
P 5250 2550
F 0 "U10" H 5250 2867 50 0000 C CNN
F 1 "74HC14" H 5250 2776 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 5250 2550 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 5250 2550 50 0001 C CNN
5 5250 2550
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 7 1 61CB40D7
P 6110 6860
F 0 "U10" H 6340 6906 50 0000 L CNN
F 1 "74HC14" H 6340 6815 50 0000 L CNN
F 2 "" H 6110 6860 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 6110 6860 50 0001 C CNN
7 6110 6860
1 0 0 -1
$EndComp
Text Notes 800 7475 0 50 ~ 0
Notes: \n\n1) Schmitt trigger is a CMOS 74HC part. Do not use a\n bipolar 7414/74LS14 for the schmitt trigger. \n\n2) A 74HCT14 or CD40106 may be substituted for 74HC14.\n If so, some resistor/capacitor values may\n need to be adjusted.\n\n3) ~RESET~ time delay is determined by R14 and C18\n\n4) ~RESET~ pulse duration is determined by R17 and C20.\n\n5) SHIFTLOCK debounce time is determined by R12 and C17.
Wire Wire Line
8050 1450 8050 1350
$Comp
L Connector_Generic:Conn_02x03_Odd_Even JP2
U 1 1 5ECEFBD7
P 6950 4500
F 0 "JP2" H 7000 4817 50 0000 C CNN
F 1 "Shiftlock_Select" H 7000 4726 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal" H 6950 4500 50 0001 C CNN
F 3 "~" H 6950 4500 50 0001 C CNN
1 6950 4500
-1 0 0 -1
$EndComp
Wire Wire Line
6000 3950 6000 4400
Wire Wire Line
6150 4850 6150 4600
Connection ~ 6150 4850
Wire Wire Line
7150 4400 7350 4400
Connection ~ 7350 4400
Wire Wire Line
7350 4400 7350 4500
Wire Wire Line
7150 4500 7350 4500
Connection ~ 7350 4500
Wire Wire Line
7350 4500 7350 4600
Wire Wire Line
7150 4600 7350 4600
Connection ~ 7350 4600
Wire Wire Line
7350 4600 7350 5200
Wire Wire Line
6000 4400 6650 4400
Wire Wire Line
6000 4500 6650 4500
Wire Wire Line
6150 4600 6650 4600
Text Notes 6090 4600 0 50 ~ 0
Soft Start OFF
$Comp
L Diode:1N4148 D20
U 1 1 5F514866
P 9150 2550
F 0 "D20" H 9150 2767 50 0000 C CNN
F 1 "1N4148" H 9150 2676 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9150 2375 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9150 2550 50 0001 C CNN
1 9150 2550
1 0 0 -1
$EndComp
$Comp
L Diode:1N4148 D19
U 1 1 5F51C8C1
P 8050 2300
F 0 "D19" V 8096 2220 50 0000 R CNN
F 1 "1N4148" V 8005 2220 50 0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8050 2125 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 8050 2300 50 0001 C CNN
1 8050 2300
0 -1 -1 0
$EndComp
$Comp
L Diode:1N4148 D21
U 1 1 5F523DE9
P 8050 1600
F 0 "D21" V 8096 1520 50 0000 R CNN
F 1 "1N4148" V 8005 1520 50 0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8050 1425 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 8050 1600 50 0001 C CNN
1 8050 1600
0 -1 -1 0
$EndComp
$Comp
L Diode:1N4148 D17
U 1 1 5F52739D
P 3400 1600
F 0 "D17" V 3446 1520 50 0000 R CNN
F 1 "1N4148" V 3355 1520 50 0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 3400 1425 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 3400 1600 50 0001 C CNN
1 3400 1600
0 -1 -1 0
$EndComp
$Comp
L Diode:1N4148 D18
U 1 1 5F5300D9
P 8100 4750
F 0 "D18" H 8160 4580 50 0000 R CNN
F 1 "1N4148" H 8220 4660 50 0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8100 4575 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 8100 4750 50 0001 C CNN
1 8100 4750
-1 0 0 1
$EndComp
$EndSCHEMATC
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