EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 8
Title "NuBus-ESP32"
Date "2021-11-18"
Rev "0.1"
Comp "Garrett's Workshop"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Notes Line
	1000 5400 1900 5400
$Comp
L power:+3V3 #PWR?
U 1 1 61A765AC
P 9150 5000
AR Path="/61A765AC" Ref="#PWR?"  Part="1" 
AR Path="/64084316/61A765AC" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/61A765AC" Ref="#PWR0213"  Part="1" 
F 0 "#PWR0213" H 9150 4850 50  0001 C CNN
F 1 "+3V3" H 9150 5150 50  0000 C CNN
F 2 "" H 9150 5000 50  0001 C CNN
F 3 "" H 9150 5000 50  0001 C CNN
	1    9150 5000
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 61A765B2
P 9150 5100
AR Path="/61A765B2" Ref="C?"  Part="1" 
AR Path="/64084316/61A765B2" Ref="C?"  Part="1" 
AR Path="/61CA157A/61A765B2" Ref="C43"  Part="1" 
F 0 "C43" H 9058 5146 50  0000 R CNN
F 1 "10u" H 9058 5055 50  0000 R CNN
F 2 "stdpads:C_0805" H 9150 5100 50  0001 C CNN
F 3 "~" H 9150 5100 50  0001 C CNN
	1    9150 5100
	-1   0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 61A765B8
P 9550 5100
AR Path="/61A765B8" Ref="C?"  Part="1" 
AR Path="/64084316/61A765B8" Ref="C?"  Part="1" 
AR Path="/61CA157A/61A765B8" Ref="C44"  Part="1" 
F 0 "C44" H 9458 5146 50  0000 R CNN
F 1 "10u" H 9458 5055 50  0000 R CNN
F 2 "stdpads:C_0805" H 9550 5100 50  0001 C CNN
F 3 "~" H 9550 5100 50  0001 C CNN
	1    9550 5100
	-1   0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 61A765BE
P 9950 5100
AR Path="/61A765BE" Ref="C?"  Part="1" 
AR Path="/64084316/61A765BE" Ref="C?"  Part="1" 
AR Path="/61CA157A/61A765BE" Ref="C45"  Part="1" 
F 0 "C45" H 9858 5146 50  0000 R CNN
F 1 "10u" H 9858 5055 50  0000 R CNN
F 2 "stdpads:C_0805" H 9950 5100 50  0001 C CNN
F 3 "~" H 9950 5100 50  0001 C CNN
	1    9950 5100
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 61A765C4
P 9950 5200
AR Path="/64084316/61A765C4" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/61A765C4" Ref="#PWR0214"  Part="1" 
F 0 "#PWR0214" H 9950 4950 50  0001 C CNN
F 1 "GND" H 9950 5050 50  0000 C CNN
F 2 "" H 9950 5200 50  0001 C CNN
F 3 "" H 9950 5200 50  0001 C CNN
	1    9950 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	9550 5000 9150 5000
Wire Wire Line
	9550 5000 9950 5000
Connection ~ 9550 5000
Wire Wire Line
	9950 5200 9550 5200
Connection ~ 9950 5200
Connection ~ 9550 5200
Wire Wire Line
	9550 5200 9150 5200
Connection ~ 9150 5000
Wire Wire Line
	4050 5100 4150 5100
Wire Wire Line
	4150 3300 4050 3300
Wire Wire Line
	4450 3050 4650 3050
Wire Wire Line
	3850 3050 3550 3050
Wire Wire Line
	3750 2350 4850 2350
Wire Wire Line
	4850 1450 3550 1450
Text HLabel 2550 4050 0    50   Input ~ 0
RDCLK
Wire Wire Line
	2550 4050 2950 4050
Wire Wire Line
	2950 3750 2950 3950
Wire Wire Line
	3250 3750 2950 3750
$Comp
L power:+3V3 #PWR?
U 1 1 682B83B0
P 3250 3750
AR Path="/61C6168C/682B83B0" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/682B83B0" Ref="#PWR0212"  Part="1" 
F 0 "#PWR0212" H 3250 3600 50  0001 C CNN
F 1 "+3V3" H 3250 3900 50  0000 C CNN
F 2 "" H 3250 3750 50  0001 C CNN
F 3 "" H 3250 3750 50  0001 C CNN
	1    3250 3750
	1    0    0    -1  
$EndComp
Text Notes 1050 2300 0    50   ~ 0
Write request\nfrom Mac to ESP32
Wire Notes Line
	1000 3600 1900 3600
Text Notes 1050 3200 0    50   ~ 0
Pending bit registered\nfor readback by Mac
Wire Notes Line
	1000 2700 1900 2700
Text Notes 1050 5000 0    50   ~ 0
Pending bit registered\nfor readback by Mac
Wire Notes Line
	1000 4500 1900 4500
Text Notes 1050 4100 0    50   ~ 0
Read request\nfrom ESP32 to Mac
Wire Notes Line
	1000 1800 1900 1800
Text Notes 1050 1400 0    50   ~ 0
ESP32 reset bit
Wire Notes Line
	1000 900  1900 900 
Wire Wire Line
	2950 2000 2950 2150
Wire Wire Line
	2850 2000 2950 2000
Wire Wire Line
	4850 4150 3750 4150
Connection ~ 3750 4150
Text Label 3850 4850 2    50   ~ 0
~RDREQ~N
$Comp
L power:GND #PWR0210
U 1 1 679639EB
P 2850 2000
F 0 "#PWR0210" H 2850 1750 50  0001 C CNN
F 1 "GND" H 2850 1850 50  0000 C CNN
F 2 "" H 2850 2000 50  0001 C CNN
F 3 "" H 2850 2000 50  0001 C CNN
	1    2850 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	2550 1950 3250 1950
Text HLabel 4050 3300 0    50   Input ~ 0
ROM~OE~
$Comp
L power:+3V3 #PWR?
U 1 1 679639E3
P 2950 3450
AR Path="/61C6168C/679639E3" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/679639E3" Ref="#PWR0209"  Part="1" 
F 0 "#PWR0209" H 2950 3300 50  0001 C CNN
F 1 "+3V3" H 2950 3600 50  0000 C CNN
F 2 "" H 2950 3450 50  0001 C CNN
F 3 "" H 2950 3450 50  0001 C CNN
	1    2950 3450
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 679639DD
P 3250 2850
AR Path="/61C6168C/679639DD" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/679639DD" Ref="#PWR0208"  Part="1" 
F 0 "#PWR0208" H 3250 2700 50  0001 C CNN
F 1 "+3V3" H 3250 3000 50  0000 C CNN
F 2 "" H 3250 2850 50  0001 C CNN
F 3 "" H 3250 2850 50  0001 C CNN
	1    3250 2850
	1    0    0    -1  
$EndComp
Wire Wire Line
	2950 3150 2550 3150
Wire Bus Line
	4850 3150 4750 3150
Entry Wire Line
	4650 3050 4750 3150
Text HLabel 4850 3150 2    50   BiDi ~ 0
~AD~[31..0]
Text Label 4450 3050 0    50   ~ 0
~AD~22
Text Label 3850 3050 2    50   ~ 0
~WRREQ~N
NoConn ~ 3550 3250
Wire Wire Line
	2950 3450 3250 3450
Wire Wire Line
	2850 2650 2850 3050
Wire Wire Line
	2850 3050 2950 3050
Wire Wire Line
	3750 2350 3550 2350
Connection ~ 3750 2350
Wire Wire Line
	3750 2650 2850 2650
Wire Wire Line
	3750 2350 3750 2650
Text HLabel 2550 3150 0    50   Input ~ 0
CLK
Text HLabel 2550 1950 0    50   Input ~ 0
REG~WE~
Wire Wire Line
	2550 4350 3250 4350
Text HLabel 4050 5100 0    50   Input ~ 0
ROM~OE~
$Comp
L power:+3V3 #PWR?
U 1 1 6219742A
P 3250 1050
AR Path="/61C6168C/6219742A" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/6219742A" Ref="#PWR0170"  Part="1" 
F 0 "#PWR0170" H 3250 900 50  0001 C CNN
F 1 "+3V3" H 3250 1200 50  0000 C CNN
F 2 "" H 3250 1050 50  0001 C CNN
F 3 "" H 3250 1050 50  0001 C CNN
	1    3250 1050
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 61C5EF4C
P 2950 5250
AR Path="/61C6168C/61C5EF4C" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/61C5EF4C" Ref="#PWR0105"  Part="1" 
F 0 "#PWR0105" H 2950 5100 50  0001 C CNN
F 1 "+3V3" H 2950 5400 50  0000 C CNN
F 2 "" H 2950 5250 50  0001 C CNN
F 3 "" H 2950 5250 50  0001 C CNN
	1    2950 5250
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 61C5E88E
P 3250 4650
AR Path="/61C6168C/61C5E88E" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/61C5E88E" Ref="#PWR0104"  Part="1" 
F 0 "#PWR0104" H 3250 4500 50  0001 C CNN
F 1 "+3V3" H 3250 4800 50  0000 C CNN
F 2 "" H 3250 4650 50  0001 C CNN
F 3 "" H 3250 4650 50  0001 C CNN
	1    3250 4650
	1    0    0    -1  
$EndComp
Wire Wire Line
	2550 1650 3250 1650
Wire Wire Line
	2550 1350 2950 1350
Wire Wire Line
	2950 4950 2550 4950
Entry Wire Line
	4650 4850 4750 4950
Wire Wire Line
	4450 4850 4650 4850
Text Label 4450 4850 0    50   ~ 0
~AD~23
Wire Wire Line
	3850 4850 3550 4850
NoConn ~ 3550 5050
Wire Wire Line
	2950 5250 3250 5250
Wire Wire Line
	2850 4450 2850 4850
Wire Wire Line
	2850 4850 2950 4850
Wire Wire Line
	3750 4150 3550 4150
Wire Wire Line
	3750 4450 2850 4450
Wire Wire Line
	3750 4150 3750 4450
$Comp
L 74xx:74LS74 U?
U 2 1 61CB05D3
P 10550 1500
AR Path="/61CB05D3" Ref="U?"  Part="1" 
AR Path="/61CA157A/61CB05D3" Ref="U18"  Part="2" 
AR Path="/61CD3565/61CB05D3" Ref="U?"  Part="1" 
F 0 "U18" H 10550 1500 50  0000 C CNN
F 1 "74LVC74AD" H 10800 1250 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 10550 1500 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 10550 1500 50  0001 C CNN
	2    10550 1500
	1    0    0    -1  
$EndComp
Text HLabel 2550 4950 0    50   Input ~ 0
CLK
Text HLabel 2550 4350 0    50   Input ~ 0
REG~OE~
Text HLabel 2550 1650 0    50   Input ~ 0
~RES~
Text HLabel 2550 1350 0    50   Input ~ 0
ROM~WE~
Text HLabel 4850 1450 2    50   Output ~ 0
ESP_~EN~
Text Label 2950 1250 2    50   ~ 0
~AD~0
Wire Bus Line
	4750 3150 4750 4950
Wire Wire Line
	2550 6750 2950 6750
Text Notes 1050 6800 0    50   ~ 0
Read data available\ninterrupt mask
Wire Notes Line
	1000 7200 1900 7200
Wire Notes Line
	1000 6300 1900 6300
$Comp
L 74xx:74LS74 U?
U 2 1 61F17BC2
P 3250 6750
AR Path="/61F17BC2" Ref="U?"  Part="1" 
AR Path="/61CA157A/61F17BC2" Ref="U36"  Part="2" 
AR Path="/61CD3565/61F17BC2" Ref="U?"  Part="1" 
F 0 "U36" H 3250 6750 50  0000 C CNN
F 1 "74LVC74AD" H 3500 6500 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 6750 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 6750 50  0001 C CNN
	2    3250 6750
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 61F17BC8
P 3250 5550
AR Path="/61C6168C/61F17BC8" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/61F17BC8" Ref="#PWR0108"  Part="1" 
F 0 "#PWR0108" H 3250 5400 50  0001 C CNN
F 1 "+3V3" H 3250 5700 50  0000 C CNN
F 2 "" H 3250 5550 50  0001 C CNN
F 3 "" H 3250 5550 50  0001 C CNN
	1    3250 5550
	1    0    0    -1  
$EndComp
Wire Wire Line
	2550 6150 3250 6150
Wire Wire Line
	2550 5850 2950 5850
Text Label 2950 5750 2    50   ~ 0
~AD~1
$Comp
L 74xx:74LS74 U?
U 1 1 61F17BD5
P 3250 5850
AR Path="/61F17BD5" Ref="U?"  Part="1" 
AR Path="/61CA157A/61F17BD5" Ref="U36"  Part="1" 
AR Path="/61CD3565/61F17BD5" Ref="U?"  Part="1" 
F 0 "U36" H 3250 5850 50  0000 C CNN
F 1 "74LVC74AD" H 3500 5600 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 5850 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 5850 50  0001 C CNN
	1    3250 5850
	1    0    0    -1  
$EndComp
Text Label 2950 6650 2    50   ~ 0
~AD~2
Text HLabel 2550 7050 0    50   Input ~ 0
~RES~
Wire Wire Line
	2550 7050 3250 7050
Text HLabel 2550 6150 0    50   Input ~ 0
~RES~
Text HLabel 2550 5850 0    50   Input ~ 0
ROM~WE~
Text HLabel 2550 6750 0    50   Input ~ 0
ROM~WE~
Wire Wire Line
	3550 1250 3750 1250
Wire Wire Line
	3750 1250 3750 1800
Wire Wire Line
	3750 1800 2650 1800
Wire Wire Line
	2650 1800 2650 2550
Wire Wire Line
	2650 2550 3250 2550
Wire Wire Line
	2550 2250 2950 2250
Text HLabel 2550 2250 0    50   Input ~ 0
WRCLK
Text Notes 1050 5900 0    50   ~ 0
Write data accepted\ninterrupt mask
$Comp
L power:+3V3 #PWR?
U 1 1 62022ED5
P 3250 6450
AR Path="/61C6168C/62022ED5" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/62022ED5" Ref="#PWR0187"  Part="1" 
F 0 "#PWR0187" H 3250 6300 50  0001 C CNN
F 1 "+3V3" H 3250 6600 50  0000 C CNN
F 2 "" H 3250 6450 50  0001 C CNN
F 3 "" H 3250 6450 50  0001 C CNN
	1    3250 6450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3550 5950 3750 5950
$Comp
L Device:R_Small R?
U 1 1 62031DEB
P 5550 6250
AR Path="/64084316/62031DEB" Ref="R?"  Part="1" 
AR Path="/61CA157A/62031DEB" Ref="R31"  Part="1" 
F 0 "R31" V 5400 6250 50  0000 C CNN
F 1 "1k" V 5500 6250 50  0000 C BNN
F 2 "stdpads:R_0805" H 5550 6250 50  0001 C CNN
F 3 "~" H 5550 6250 50  0001 C CNN
F 4 "C25190" H 5550 6250 50  0001 C CNN "LCSC Part"
	1    5550 6250
	0    1    1    0   
$EndComp
Wire Wire Line
	6050 6250 5950 6250
$Comp
L power:GND #PWR?
U 1 1 62031DF9
P 5950 6650
AR Path="/64084316/62031DF9" Ref="#PWR?"  Part="1" 
AR Path="/61CA157A/62031DF9" Ref="#PWR0189"  Part="1" 
F 0 "#PWR0189" H 5950 6400 50  0001 C CNN
F 1 "GND" H 5950 6500 50  0000 C CNN
F 2 "" H 5950 6650 50  0001 C CNN
F 3 "" H 5950 6650 50  0001 C CNN
	1    5950 6650
	1    0    0    -1  
$EndComp
Text HLabel 6050 6250 2    50   Output ~ 0
~NMRQ~
Wire Wire Line
	3550 6850 3750 6850
$Comp
L 74xx:74LS02 U22
U 3 2 62038458
P 5150 6650
F 0 "U22" H 5150 6650 50  0000 C CNN
F 1 "74LVC02AD" H 5150 6850 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 5150 6650 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS02" H 5150 6650 50  0001 C CNN
	3    5150 6650
	1    0    0    -1  
$EndComp
NoConn ~ 3550 5750
NoConn ~ 3550 6650
Text Label 3850 2350 2    50   ~ 0
~WRREQ~
Text Label 3850 2150 2    50   ~ 0
WRREQ
Wire Wire Line
	3850 2150 3550 2150
Text Label 3850 4150 2    50   ~ 0
~RDREQ~
Text HLabel 4850 4150 2    50   Output ~ 0
~RDREQ~
Text HLabel 4850 2350 2    50   Output ~ 0
~WRREQ~
Text Label 3750 5950 2    50   ~ 0
WR~IE~
Text Label 3750 6850 2    50   ~ 0
RD~IE~
Wire Wire Line
	4550 6550 4850 6550
Wire Wire Line
	4550 6750 4850 6750
Text Label 4550 6550 0    50   ~ 0
WRREQ
Text Label 4550 6750 0    50   ~ 0
WR~IE~
Wire Wire Line
	5650 6450 5650 6650
$Comp
L Transistor_BJT:MMBT3904 Q?
U 1 1 62031DF3
P 5850 6450
AR Path="/64084316/62031DF3" Ref="Q?"  Part="1" 
AR Path="/61CA157A/62031DF3" Ref="Q5"  Part="1" 
F 0 "Q5" H 6041 6496 50  0000 L CNN
F 1 "MMBT3904" H 6041 6405 50  0000 L CNN
F 2 "stdpads:SOT-23" H 6050 6550 50  0001 C CNN
F 3 "~" H 5850 6450 50  0001 C CNN
F 4 "C20526" H 5850 6450 50  0001 C CNN "LCSC Part"
	1    5850 6450
	1    0    0    -1  
$EndComp
Connection ~ 5650 6450
Wire Wire Line
	5650 6250 5650 6450
$Comp
L Device:R_Small R?
U 1 1 620548CA
P 5550 6650
AR Path="/64084316/620548CA" Ref="R?"  Part="1" 
AR Path="/61CA157A/620548CA" Ref="R32"  Part="1" 
F 0 "R32" V 5400 6650 50  0000 C CNN
F 1 "1k" V 5500 6650 50  0000 C BNN
F 2 "stdpads:R_0805" H 5550 6650 50  0001 C CNN
F 3 "~" H 5550 6650 50  0001 C CNN
F 4 "C25190" H 5550 6650 50  0001 C CNN "LCSC Part"
	1    5550 6650
	0    1    1    0   
$EndComp
Text Label 4550 6350 0    50   ~ 0
RD~IE~
Text Label 4550 6150 0    50   ~ 0
~RDREQ~
Text Notes 4450 6700 2    50   ~ 0
write buffer\nempty
Text Notes 4450 6300 2    50   ~ 0
read data\navailable
$Comp
L 74xx:74LS74 U?
U 1 1 679639AF
P 3250 1350
AR Path="/679639AF" Ref="U?"  Part="1" 
AR Path="/61CA157A/679639AF" Ref="U35"  Part="1" 
AR Path="/61CD3565/679639AF" Ref="U?"  Part="1" 
F 0 "U35" H 3250 1350 50  0000 C CNN
F 1 "74LVC74AD" H 3500 1100 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 1350 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 1350 50  0001 C CNN
	1    3250 1350
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS74 U?
U 2 1 61CA9D3D
P 3250 4050
AR Path="/61CA9D3D" Ref="U?"  Part="1" 
AR Path="/61CA157A/61CA9D3D" Ref="U19"  Part="2" 
AR Path="/61CD3565/61CA9D3D" Ref="U?"  Part="1" 
F 0 "U19" H 3250 4050 50  0000 C CNN
F 1 "74LVC74AD" H 3500 3800 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 4050 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 4050 50  0001 C CNN
	2    3250 4050
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS74 U?
U 1 1 61CA9D2C
P 3250 2250
AR Path="/61CA9D2C" Ref="U?"  Part="1" 
AR Path="/61CA157A/61CA9D2C" Ref="U19"  Part="1" 
AR Path="/61CD3565/61CA9D2C" Ref="U?"  Part="1" 
F 0 "U19" H 3250 2250 50  0000 C CNN
F 1 "74LVC74AD" H 3500 2000 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 2250 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 2250 50  0001 C CNN
	1    3250 2250
	1    0    0    -1  
$EndComp
Connection ~ 3250 3750
$Comp
L 74xx:74LS74 U?
U 1 1 61986FF7
P 3250 3150
AR Path="/61986FF7" Ref="U?"  Part="1" 
AR Path="/61CA157A/61986FF7" Ref="U37"  Part="1" 
AR Path="/61CD3565/61986FF7" Ref="U?"  Part="1" 
F 0 "U37" H 3250 3150 50  0000 C CNN
F 1 "74LVC74AD" H 3500 2900 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 3150 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 3150 50  0001 C CNN
	1    3250 3150
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS74 U?
U 2 1 619879D7
P 3250 4950
AR Path="/619879D7" Ref="U?"  Part="1" 
AR Path="/61CA157A/619879D7" Ref="U37"  Part="2" 
AR Path="/61CD3565/619879D7" Ref="U?"  Part="1" 
F 0 "U37" H 3250 4950 50  0000 C CNN
F 1 "74LVC74AD" H 3500 4700 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 3250 4950 50  0001 C CNN
F 3 "74xx/74hc_hct74.pdf" H 3250 4950 50  0001 C CNN
	2    3250 4950
	1    0    0    -1  
$EndComp
NoConn ~ 3550 3950
Wire Wire Line
	4550 6350 4850 6350
Wire Wire Line
	4550 6150 4850 6150
$Comp
L 74xx:74LS02 U22
U 4 2 6204FC23
P 5150 6250
F 0 "U22" H 5150 6250 50  0000 C CNN
F 1 "74LVC02AD" H 5150 6450 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 5150 6250 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS02" H 5150 6250 50  0001 C CNN
	4    5150 6250
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS125 U24
U 3 1 62013970
P 4150 4850
F 0 "U24" H 4100 4850 50  0000 C CNN
F 1 "74LVC125AD" H 4150 5050 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 4150 4850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 4150 4850 50  0001 C CNN
	3    4150 4850
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS125 U24
U 4 1 679639CB
P 4150 3050
F 0 "U24" H 4100 3050 50  0000 C CNN
F 1 "74LVC125AD" H 4150 3250 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 4150 3050 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 4150 3050 50  0001 C CNN
	4    4150 3050
	1    0    0    -1  
$EndComp
$EndSCHEMATC