EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:mux12-cache
EELAYER 25 0
EELAYER END
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Title ""
Date ""
Rev ""
Comp ""
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$Comp
L 74LS257 U2
U 1 1 5A9FFC25
P 4000 3450
F 0 "U2" H 4050 3600 50  0000 C CNN
F 1 "74LS257" H 4050 3300 50  0000 C CNN
F 2 "Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm" H 4000 3450 50  0001 C CNN
F 3 "" H 4000 3450 50  0001 C CNN
	1    4000 3450
	1    0    0    -1  
$EndComp
$Comp
L 74LS257 U3
U 1 1 5A9FFD36
P 4000 4700
F 0 "U3" H 4050 4850 50  0000 C CNN
F 1 "74LS257" H 4050 4550 50  0000 C CNN
F 2 "Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm" H 4000 4700 50  0001 C CNN
F 3 "" H 4000 4700 50  0001 C CNN
	1    4000 4700
	1    0    0    -1  
$EndComp
$Comp
L Conn_01x12 J2
U 1 1 5A9FFDF1
P 1400 4100
F 0 "J2" H 1400 4700 50  0000 C CNN
F 1 "Conn_01x12" H 1400 3400 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x12_Pitch2.54mm" H 1400 4100 50  0001 C CNN
F 3 "" H 1400 4100 50  0001 C CNN
	1    1400 4100
	-1   0    0    -1  
$EndComp
$Comp
L Conn_01x12 J1
U 1 1 5A9FFEB4
P 1400 2450
F 0 "J1" H 1400 3050 50  0000 C CNN
F 1 "Conn_01x12" H 1400 1750 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x12_Pitch2.54mm" H 1400 2450 50  0001 C CNN
F 3 "" H 1400 2450 50  0001 C CNN
	1    1400 2450
	-1   0    0    -1  
$EndComp
$Comp
L Conn_01x12 J4
U 1 1 5A9FFEF2
P 6550 3300
F 0 "J4" H 6550 3900 50  0000 C CNN
F 1 "Conn_01x12" H 6550 2600 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x12_Pitch2.54mm" H 6550 3300 50  0001 C CNN
F 3 "" H 6550 3300 50  0001 C CNN
	1    6550 3300
	1    0    0    -1  
$EndComp
$Comp
L 74LS257 U1
U 1 1 5A9FF14C
P 4000 2200
F 0 "U1" H 4050 2350 50  0000 C CNN
F 1 "74LS257" H 4050 2050 50  0000 C CNN
F 2 "Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm" H 4000 2200 50  0001 C CNN
F 3 "" H 4000 2200 50  0001 C CNN
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$EndComp
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$Comp
L VCC #PWR01
U 1 1 5AA01301
P 2550 6000
F 0 "#PWR01" H 2550 5850 50  0001 C CNN
F 1 "VCC" H 2550 6150 50  0000 C CNN
F 2 "" H 2550 6000 50  0001 C CNN
F 3 "" H 2550 6000 50  0001 C CNN
	1    2550 6000
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$EndComp
$Comp
L GND #PWR02
U 1 1 5AA0132A
P 2700 6100
F 0 "#PWR02" H 2700 5850 50  0001 C CNN
F 1 "GND" H 2700 5950 50  0000 C CNN
F 2 "" H 2700 6100 50  0001 C CNN
F 3 "" H 2700 6100 50  0001 C CNN
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$EndComp
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$Comp
L PWR_FLAG #FLG03
U 1 1 5AA01E5B
P 4300 5800
F 0 "#FLG03" H 4300 5875 50  0001 C CNN
F 1 "PWR_FLAG" H 4300 5950 50  0000 C CNN
F 2 "" H 4300 5800 50  0001 C CNN
F 3 "" H 4300 5800 50  0001 C CNN
	1    4300 5800
	1    0    0    -1  
$EndComp
$Comp
L PWR_FLAG #FLG04
U 1 1 5AA01E84
P 5200 5750
F 0 "#FLG04" H 5200 5825 50  0001 C CNN
F 1 "PWR_FLAG" H 5200 5900 50  0000 C CNN
F 2 "" H 5200 5750 50  0001 C CNN
F 3 "" H 5200 5750 50  0001 C CNN
	1    5200 5750
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR05
U 1 1 5AA01F39
P 4300 5800
F 0 "#PWR05" H 4300 5550 50  0001 C CNN
F 1 "GND" H 4300 5650 50  0000 C CNN
F 2 "" H 4300 5800 50  0001 C CNN
F 3 "" H 4300 5800 50  0001 C CNN
	1    4300 5800
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR06
U 1 1 5AA01F62
P 5200 5750
F 0 "#PWR06" H 5200 5600 50  0001 C CNN
F 1 "VCC" H 5200 5900 50  0000 C CNN
F 2 "" H 5200 5750 50  0001 C CNN
F 3 "" H 5200 5750 50  0001 C CNN
	1    5200 5750
	-1   0    0    1   
$EndComp
$Comp
L CONN_01X03 P1
U 1 1 5AA1537F
P 1750 6000
F 0 "P1" H 1750 6200 50  0000 C CNN
F 1 "CONN_01X03" V 1850 6000 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x03" H 1750 6000 50  0001 C CNN
F 3 "" H 1750 6000 50  0000 C CNN
	1    1750 6000
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR07
U 1 1 5AA15424
P 3400 5950
F 0 "#PWR07" H 3400 5700 50  0001 C CNN
F 1 "GND" H 3400 5800 50  0000 C CNN
F 2 "" H 3400 5950 50  0000 C CNN
F 3 "" H 3400 5950 50  0000 C CNN
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$EndComp
Wire Wire Line
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$EndSCHEMATC