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unified_retro_keyboard
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EESchema Schematic File Version 4
LIBS:unikbd-osi-cache
EELAYER 29 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 3
Title "OSI Interface for Universal Retro Keyboard"
Date "2019-08-25"
Rev "1.0"
Comp "OSIWeb.org"
Comment1 "Main Keyboard Interface"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
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F 3 "http://www.ti.com/lit/gpn/sn7402" H 1900 5850 50 0001 C CNN
3 1900 5850
1 0 0 -1
$EndComp
$Comp
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U 4 1 5BCB97C4
P 2650 5250
F 0 "U1" H 2650 5575 50 0000 C CNN
F 1 "7402" H 2650 5484 50 0000 C CNN
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F 3 "http://www.ti.com/lit/gpn/sn7402" H 2650 5250 50 0001 C CNN
4 2650 5250
1 0 0 -1
$EndComp
$Comp
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F 3 "http://www.ti.com/lit/gpn/sn7402" H 1150 7050 50 0001 C CNN
5 1150 7050
1 0 0 -1
$EndComp
$Comp
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F 0 "J1" H 820 2275 50 0000 C CNN
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F 3 "~" H 900 3300 50 0001 C CNN
1 900 3300
-1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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$Comp
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F 1 "GND" H 1955 4127 50 0000 C CNN
F 2 "" H 1950 4300 50 0001 C CNN
F 3 "" H 1950 4300 50 0001 C CNN
1 1950 4300
1 0 0 -1
$EndComp
$Comp
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F 1 "+5V" H 1765 2673 50 0000 C CNN
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F 3 "" H 1750 2500 50 0001 C CNN
1 1750 2500
1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3100 4250
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Wire Wire Line
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$Comp
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F 3 "" H 3800 1100 50 0001 C CNN
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$EndComp
$Comp
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F 3 "" H 3800 3500 50 0001 C CNN
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$EndComp
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F 3 "" H 6850 2500 50 0001 C CNN
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$EndComp
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F 3 "" H 1150 6500 50 0001 C CNN
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$EndComp
$Comp
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F 1 "GND" H 1155 7527 50 0000 C CNN
F 2 "" H 1150 7700 50 0001 C CNN
F 3 "" H 1150 7700 50 0001 C CNN
1 1150 7700
1 0 0 -1
$EndComp
$Comp
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F 3 "" H 6850 4250 50 0001 C CNN
1 6850 4250
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$EndComp
$Comp
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F 3 "" H 3800 5250 50 0001 C CNN
1 3800 5250
1 0 0 -1
$EndComp
$Comp
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F 3 "" H 3800 3000 50 0001 C CNN
1 3800 3000
1 0 0 -1
$EndComp
$Comp
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F 3 "" H 6350 3950 50 0001 C CNN
1 6350 3950
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$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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$Comp
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F 3 "" H 1600 6700 50 0001 C CNN
1 1600 6700
1 0 0 -1
$EndComp
$Comp
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$EndComp
$Comp
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$EndComp
$Comp
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F 3 "~" H 2250 7000 50 0001 C CNN
1 2250 7000
1 0 0 -1
$EndComp
$Comp
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F 3 "~" H 2650 7000 50 0001 C CNN
1 2650 7000
1 0 0 -1
$EndComp
$Comp
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F 3 "~" H 3050 7000 50 0001 C CNN
1 3050 7000
1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Connection ~ 2250 6850
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Connection ~ 2650 6850
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Wire Wire Line
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Wire Wire Line
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Connection ~ 1850 7150
Wire Wire Line
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Connection ~ 2250 7150
Wire Wire Line
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Connection ~ 2650 7150
Wire Wire Line
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$Comp
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1 5250 1200
1 0 0 -1
$EndComp
$Comp
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1 4850 900
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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1 6850 3350
1 0 0 -1
$EndComp
$Comp
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F 3 "http://www.ti.com/lit/gpn/sn74LS240" H 3800 4350 50 0001 C CNN
1 3800 4350
1 0 0 -1
$EndComp
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Text Label 1200 3000 0 50 ~ 0
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Text Label 1200 2800 0 50 ~ 0
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Text Label 1200 2600 0 50 ~ 0
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GND
Text Label 1200 3800 0 50 ~ 0
~KBE
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~A1
Text Label 1200 3600 0 50 ~ 0
~A0
$Comp
L unikbd:74LS240-74xx U2
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$EndComp
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3100 4750
Wire Wire Line
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Wire Wire Line
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Connection ~ 1600 4850
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Wire Wire Line
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$Comp
L power:GND #PWR06
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1 0 0 -1
$EndComp
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$Comp
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1 2050 4950
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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Wire Wire Line
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Connection ~ 4850 2150
Wire Wire Line
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Wire Wire Line
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Connection ~ 4950 2250
Wire Wire Line
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Connection ~ 5050 2350
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Wire Wire Line
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Connection ~ 5150 2450
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 5250 4400
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Wire Wire Line
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Connection ~ 5350 4500
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Wire Wire Line
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Connection ~ 5450 4600
Wire Wire Line
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Wire Wire Line
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Connection ~ 5550 4700
Wire Wire Line
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Row4
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Row5
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Text Label 7400 3550 0 50 ~ 0
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Connection ~ 1600 3500
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 1450 3800
Wire Wire Line
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Wire Wire Line
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~KBE
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~A1
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~A0
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NI
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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 ~ 3100 1800
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Wire Wire Line
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Connection ~ 3100 1600
Wire Wire Line
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Wire Wire Line
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Entry Wire Line
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NI
Entry Wire Line
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Wire Wire Line
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~SI
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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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F7 "D5" I R 1350 1300 50
F8 "D6" I R 1350 1400 50
F9 "D7" I R 1350 1600 50
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$EndSheet
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Wire Wire Line
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Wire Wire Line
1100 4100 1750 4100
$Comp
L Connector_Generic:Conn_02x20_Odd_Even J2
U 1 1 5D1EDC84
P 8760 2150
F 0 "J2" H 8810 3267 50 0000 C CNN
F 1 "Conn_02x20_Odd_Even" H 8810 3176 50 0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical" H 8760 2150 50 0001 C CNN
F 3 "~" H 8760 2150 50 0001 C CNN
1 8760 2150
1 0 0 -1
$EndComp
Text Label 8050 2550 0 50 ~ 0
Row3
Text Label 8050 2650 0 50 ~ 0
Row2
Text Label 8050 2750 0 50 ~ 0
Row1
Text Label 8050 2850 0 50 ~ 0
Row0
Text Label 8050 1350 0 50 ~ 0
Col7
Text Label 8050 1450 0 50 ~ 0
Col6
Text Label 8050 1550 0 50 ~ 0
Col5
Text Label 8050 1650 0 50 ~ 0
Col4
Text Label 8050 1750 0 50 ~ 0
Col3
Text Label 8050 1850 0 50 ~ 0
Col2
Text Label 8050 1950 0 50 ~ 0
Col1
Text Label 8050 2050 0 50 ~ 0
Col0
Wire Wire Line
7610 1250 8560 1250
$Comp
L power:+5V #PWR?
U 1 1 5D72F1AB
P 9360 600
F 0 "#PWR?" H 9360 450 50 0001 C CNN
F 1 "+5V" H 9375 773 50 0000 C CNN
F 2 "" H 9360 600 50 0001 C CNN
F 3 "" H 9360 600 50 0001 C CNN
1 9360 600
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5D730D08
P 9610 1050
F 0 "#PWR?" H 9610 800 50 0001 C CNN
F 1 "GND" H 9615 877 50 0000 C CNN
F 2 "" H 9610 1050 50 0001 C CNN
F 3 "" H 9610 1050 50 0001 C CNN
1 9610 1050
1 0 0 -1
$EndComp
$Comp
L Device:R_US R?
U 1 1 5D734EF5
P 9360 880
F 0 "R?" H 9260 780 50 0000 C CNN
F 1 "470 ohm" H 9540 740 50 0000 C CNN
F 2 "Resistor_THT:R_Box_L8.4mm_W2.5mm_P5.08mm" V 9400 870 50 0001 C CNN
F 3 "~" H 9360 880 50 0001 C CNN
1 9360 880
-1 0 0 1
$EndComp
Wire Wire Line
9360 600 9360 730
Wire Wire Line
9060 1250 9360 1250
Wire Wire Line
9360 1250 9360 1030
Wire Wire Line
9060 1350 9450 1350
Wire Wire Line
9450 1350 9450 1020
Wire Wire Line
9450 1020 9610 1020
Wire Wire Line
9610 1020 9610 1050
$Sheet
S 9550 2010 500 1050
U 5D770C6B
F0 "special_keys" 50
F1 "special_keys.sch" 50
$EndSheet
Wire Wire Line
7900 1350 8560 1350
Wire Wire Line
7900 1450 8560 1450
Wire Wire Line
7900 1550 8560 1550
Wire Wire Line
7900 1650 8560 1650
Wire Wire Line
7900 1750 8560 1750
Wire Wire Line
7900 1850 8560 1850
Wire Wire Line
7900 1950 8560 1950
Wire Wire Line
7900 2050 8560 2050
Wire Wire Line
7900 2150 8560 2150
Wire Wire Line
7900 2250 8560 2250
Wire Wire Line
7900 2350 8560 2350
Wire Wire Line
7900 2450 8560 2450
Wire Wire Line
7900 2550 8560 2550
Wire Wire Line
7900 2650 8560 2650
Wire Wire Line
7900 2750 8560 2750
Wire Wire Line
7900 2850 8560 2850
Wire Wire Line
1100 2900 2700 2900
Connection ~ 3950 7200
Wire Wire Line
3950 7300 3950 7200
$Comp
L power:GND #PWR012
U 1 1 5C0D6619
P 3950 7300
F 0 "#PWR012" H 3950 7050 50 0001 C CNN
F 1 "GND" H 3955 7127 50 0000 C CNN
F 2 "" H 3950 7300 50 0001 C CNN
F 3 "" H 3950 7300 50 0001 C CNN
1 3950 7300
1 0 0 -1
$EndComp
Wire Wire Line
3950 7000 3950 7200
Wire Wire Line
4250 7200 4300 7200
Wire Wire Line
4250 7000 4300 7000
$Comp
L Device:R_US R2
U 1 1 5C09E4C7
P 4100 7200
F 0 "R2" V 4200 7150 50 0000 C CNN
F 1 "0 ohm" V 4200 7350 50 0000 C CNN
F 2 "Resistor_THT:R_Box_L8.4mm_W2.5mm_P5.08mm" V 4140 7190 50 0001 C CNN
F 3 "~" H 4100 7200 50 0001 C CNN
1 4100 7200
0 1 1 0
$EndComp
$Comp
L Device:R_US R1
U 1 1 5C09E3FF
P 4100 7000
F 0 "R1" V 4000 6900 50 0000 C CNN
F 1 "0 ohm" V 4000 7100 50 0000 C CNN
F 2 "Resistor_THT:R_Box_L8.4mm_W2.5mm_P5.08mm" V 4140 6990 50 0001 C CNN
F 3 "~" H 4100 7000 50 0001 C CNN
1 4100 7000
0 1 1 0
$EndComp
$Comp
L 74xx:7402 U1
U 2 1 5BCB96EA
P 4600 7100
F 0 "U1" H 4600 7425 50 0000 C CNN
F 1 "7402" H 4600 7334 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4600 7100 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn7402" H 4600 7100 50 0001 C CNN
2 4600 7100
1 0 0 -1
$EndComp
Wire Wire Line
6350 3150 6050 3150
Wire Wire Line
6350 3050 6100 3050
Wire Wire Line
6100 1800 6100 3050
Wire Wire Line
6150 2950 6350 2950
Wire Wire Line
6200 2850 6350 2850
Wire Wire Line
6350 3250 6050 3250
Wire Wire Line
6350 3350 6100 3350
Wire Wire Line
6350 3450 6150 3450
Wire Wire Line
6200 3550 6350 3550
Wire Wire Line
6350 3750 6250 3750
Wire Wire Line
1100 3400 2450 3400
Wire Wire Line
1100 3200 2550 3200
Wire Wire Line
1100 3100 2650 3100
Wire Wire Line
1100 3000 2750 3000
Wire Wire Line
1100 2800 2600 2800
Wire Wire Line
1100 2700 2500 2700
Wire Wire Line
1100 2600 2400 2600
Wire Bus Line
5800 2250 5800 5050
Wire Bus Line
2150 900 2150 4100
Wire Bus Line
7800 1450 7800 5050
$EndSCHEMATC
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