EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 3 3 Title "" Date "" Rev "" Comp "" Comment1 "" 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 8950 6150 2 50 Output ~ 0 ShiftLock_LED+ Text HLabel 8950 6250 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 9100 2550 2 50 Output ~ 0 ~RESET $Comp L 74xx:74LS14 U11 U 1 1 60F8E3EB P 5600 4500 F 0 "U11" H 5600 4817 50 0000 C CNN F 1 "74LS14" H 5600 4726 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 5600 4500 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 4500 50 0001 C CNN 1 5600 4500 1 0 0 -1 $EndComp $Comp L 74xx:74LS14 U11 U 2 1 60F90788 P 5600 5350 F 0 "U11" H 5600 5667 50 0000 C CNN F 1 "74LS14" H 5600 5576 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 5600 5350 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 5350 50 0001 C CNN 2 5600 5350 1 0 0 -1 $EndComp $Comp L 74xx:74LS14 U11 U 3 1 60F91229 P 3650 4900 F 0 "U11" H 3650 5217 50 0000 C CNN F 1 "74LS14" H 3650 5126 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 3650 4900 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 3650 4900 50 0001 C CNN 3 3650 4900 1 0 0 -1 $EndComp $Comp L 74xx:74LS14 U11 U 4 1 60F9322B P 4150 1800 F 0 "U11" H 4150 2117 50 0000 C CNN F 1 "74LS14" H 4150 2026 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 4150 1800 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 4150 1800 50 0001 C CNN 4 4150 1800 1 0 0 -1 $EndComp $Comp L 74xx:74LS14 U11 U 6 1 60F956F9 P 8500 2550 F 0 "U11" H 8500 2867 50 0000 C CNN F 1 "74LS14" H 8500 2776 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 8500 2550 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 8500 2550 50 0001 C CNN 6 8500 2550 1 0 0 -1 $EndComp $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 ~ 6150 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 #PWR033 U 1 1 60FB81DD P 4350 5900 F 0 "#PWR033" 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:CP_Radial_Tantal_D4.5mm_P2.50mm" 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 4350 5800 4350 5900 $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 "5.6M" 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 "0.33uF" H 3115 2105 50 0000 L CNN F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" 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 #PWR032 U 1 1 60FF7396 P 3000 2400 F 0 "#PWR032" 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 U12 U 1 1 60FFF569 P 7350 4500 F 0 "U12" V 7396 4372 50 0000 R CNN F 1 "4066" V 7305 4372 50 0000 R CNN F 2 "" H 7350 4500 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7350 4500 50 0001 C CNN 1 7350 4500 0 -1 -1 0 $EndComp $Comp L 4xxx:4066 U12 U 2 1 6100162B P 4350 4900 F 0 "U12" V 4396 4772 50 0000 R CNN F 1 "4066" V 4305 4772 50 0000 R CNN F 2 "" 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 U12 U 3 1 61001D7C P 8300 4500 F 0 "U12" V 8346 4372 50 0000 R CNN F 1 "4066" V 8255 4372 50 0000 R CNN F 2 "" H 8300 4500 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 8300 4500 50 0001 C CNN 3 8300 4500 0 -1 -1 0 $EndComp $Comp L 4xxx:4066 U12 U 4 1 6100250F P 7100 2550 F 0 "U12" H 7100 2377 50 0000 C CNN F 1 "4066" H 7100 2286 50 0000 C CNN F 2 "" 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 6000 4500 7050 4500 $Comp L Diode:1N914 D18 U 1 1 61026B80 P 8800 5500 F 0 "D18" H 8800 5284 50 0000 C CNN F 1 "1N914" H 8800 5375 50 0000 C CNN F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8800 5325 50 0001 C CNN F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 8800 5500 50 0001 C CNN 1 8800 5500 -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 #PWR028 U 1 1 61054316 P 2250 5800 F 0 "#PWR028" 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 #PWR029 U 1 1 6105BADF P 2700 3750 F 0 "#PWR029" 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:CP_Radial_Tantal_D4.5mm_P2.50mm" 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 #PWR030 U 1 1 610755A7 P 2700 5900 F 0 "#PWR030" 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 Wire Wire Line 4000 4900 4000 4050 Wire Wire Line 4000 4050 7900 4050 Wire Wire Line 7900 4050 7900 4500 Wire Wire Line 7900 4500 8000 4500 Connection ~ 4000 4900 Wire Wire Line 4000 4900 4050 4900 Wire Wire Line 7350 4200 7350 3850 Wire Wire Line 7350 3850 8300 3850 Wire Wire Line 8300 3850 8300 4200 Connection ~ 8300 3850 Wire Wire Line 8300 3850 8900 3850 $Comp L Jumper:Jumper_3_Open JP2 U 1 1 6116CC01 P 7850 5100 F 0 "JP2" H 7850 5324 50 0000 C CNN F 1 "Jumper_3_Open" H 7850 5233 50 0000 C CNN F 2 "" H 7850 5100 50 0001 C CNN F 3 "~" H 7850 5100 50 0001 C CNN 1 7850 5100 1 0 0 -1 $EndComp Wire Wire Line 7350 5100 7600 5100 Wire Wire Line 7350 4800 7350 5100 Wire Wire Line 8100 5100 8300 5100 Wire Wire Line 8300 5100 8300 4800 Wire Wire Line 7850 5250 7850 5500 Wire Wire Line 7850 5500 8650 5500 $Comp L power:+5V #PWR031 U 1 1 6119EF3F P 3000 850 F 0 "#PWR031" 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 Wire Wire Line 3250 4900 3250 6600 Wire Wire Line 3250 6600 6350 6600 Connection ~ 3250 4900 Wire Wire Line 3250 4900 3350 4900 $Comp L Jumper:Jumper_3_Open JP1 U 1 1 6120B4E1 P 6350 6250 F 0 "JP1" V 6396 6337 50 0000 L CNN F 1 "Jumper_3_Open" V 6305 6337 50 0000 L CNN F 2 "" H 6350 6250 50 0001 C CNN F 3 "~" H 6350 6250 50 0001 C CNN 1 6350 6250 0 -1 -1 0 $EndComp Wire Wire Line 6350 5350 6350 6000 Wire Wire Line 6150 5350 6350 5350 Wire Wire Line 6350 6600 6350 6500 $Comp L power:+5V #PWR036 U 1 1 61245055 P 8800 6000 F 0 "#PWR036" H 8800 5850 50 0001 C CNN F 1 "+5V" H 8815 6173 50 0000 C CNN F 2 "" H 8800 6000 50 0001 C CNN F 3 "" H 8800 6000 50 0001 C CNN 1 8800 6000 1 0 0 -1 $EndComp Wire Wire Line 8800 6000 8800 6150 Wire Wire Line 8800 6150 8950 6150 Text HLabel 8900 3850 2 50 Input ~ 0 Col0 Text HLabel 8950 5500 2 50 Output ~ 0 Row0 Wire Wire Line 6500 6250 8950 6250 $Comp L Device:C C20 U 1 1 61431129 P 6150 2900 F 0 "C20" H 6265 2946 50 0000 L CNN F 1 "0.33uF" H 6265 2855 50 0000 L CNN F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" 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 #PWR034 U 1 1 6143112F P 6150 3150 F 0 "#PWR034" 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 "100k" 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 "100K" 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 $Comp L 74xx:74LS14 U11 U 5 1 6168AA55 P 5250 2550 F 0 "U11" H 5250 2867 50 0000 C CNN F 1 "74LS14" 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/sn74LS14" H 5250 2550 50 0001 C CNN 5 5250 2550 1 0 0 -1 $EndComp 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 8200 2550 $Comp L power:GND #PWR035 U 1 1 6170BBEC P 7800 3150 F 0 "#PWR035" 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 $Comp L Diode:1N914 D17 U 1 1 6170E5F0 P 3400 1600 F 0 "D17" V 3500 1550 50 0000 C CNN F 1 "1N914" V 3300 1450 50 0000 C CNN F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 3400 1425 50 0001 C CNN F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 3400 1600 50 0001 C CNN 1 3400 1600 0 -1 -1 0 $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 #PWR027 U 1 1 617A42C5 P 2150 2400 F 0 "#PWR027" 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 9100 2550 8800 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 "56K" 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 Wire Wire Line 2700 4900 3250 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 "4.7K" 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 2600 2850 0 50 ~ 0 Reset Delay time: about 3.3 sec\nReset delay is approx. proportional to 10sec/uF * C1 value Text Notes 6400 3150 0 50 ~ 0 ~RESET~ pulse is approx 50 usec. $Comp L 74xx:74LS14 U11 U 7 1 61CB40D7 P 10450 1550 F 0 "U11" H 10680 1596 50 0000 L CNN F 1 "74LS14" H 10680 1505 50 0000 L CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 10450 1550 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 10450 1550 50 0001 C CNN 7 10450 1550 1 0 0 -1 $EndComp $Comp L 4xxx:4066 U12 U 5 1 61CB40DD P 9750 1550 F 0 "U12" H 9980 1596 50 0000 L CNN F 1 "4066" H 9980 1505 50 0000 L CNN F 2 "" H 9750 1550 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 9750 1550 50 0001 C CNN 5 9750 1550 1 0 0 -1 $EndComp Wire Wire Line 9750 1050 9750 950 Wire Wire Line 9750 950 10100 950 Wire Wire Line 10450 950 10450 1050 Wire Wire Line 10450 2050 10450 2100 Wire Wire Line 10450 2100 10100 2100 Wire Wire Line 9750 2100 9750 2050 $Comp L power:GND #PWR038 U 1 1 61CB40E9 P 10100 2150 F 0 "#PWR038" H 10100 1900 50 0001 C CNN F 1 "GND" H 10105 1977 50 0000 C CNN F 2 "" H 10100 2150 50 0001 C CNN F 3 "" H 10100 2150 50 0001 C CNN 1 10100 2150 1 0 0 -1 $EndComp Wire Wire Line 10100 2150 10100 2100 Connection ~ 10100 2100 Wire Wire Line 10100 2100 9750 2100 $Comp L power:+5V #PWR037 U 1 1 61CB40F2 P 10100 850 F 0 "#PWR037" H 10100 700 50 0001 C CNN F 1 "+5V" H 10115 1023 50 0000 C CNN F 2 "" H 10100 850 50 0001 C CNN F 3 "" H 10100 850 50 0001 C CNN 1 10100 850 1 0 0 -1 $EndComp Wire Wire Line 10100 850 10100 950 Connection ~ 10100 950 Wire Wire Line 10100 950 10450 950 $EndSCHEMATC