EESchema Schematic File Version 2
LIBS:adc_dac
LIBS:atmel_avr
LIBS:borg
LIBS:breakout_boards
LIBS:common_devices
LIBS:conn_gen
LIBS:conn_special
LIBS:digital_logic
LIBS:driver
LIBS:el_mech
LIBS:i2c
LIBS:mechanical
LIBS:opamp
LIBS:optoisol
LIBS:power
LIBS:power_supply
LIBS:radio_tv
LIBS:sensor
LIBS:serial_interface
LIBS:storage
LIBS:sureelectronics.net
LIBS:ttl-2-rs485-isol-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Isolated RS485 Driver"
Date ""
Rev "1.0"
Comp "Borg Empire"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L CONN_10 P1
U 1 1 57F66961
P 2000 3250
F 0 "P1" H 2000 3900 60  0000 C CNN
F 1 "TTL" H 2000 3800 60  0000 C CNN
F 2 "p_gen_conn:P_10_IDC" H 2000 3250 60  0001 C CNN
F 3 "" H 2000 3250 60  0000 C CNN
	1    2000 3250
	1    0    0    1   
$EndComp
Text Notes 1550 3750 0    66   ~ 0
RS485\nNC\nRTS\nCTS\nTXD\nRXD\n+3.3V\n+5V\nGND\nGND\n
$Comp
L DCDC U2
U 1 1 57F66AD2
P 3600 4400
F 0 "U2" H 3600 4050 60  0000 C CNN
F 1 "F0505S-1W" H 3600 4750 60  0000 C CNN
F 2 "misc:U_4_MORNSUN_F_S-1WR2" H 3600 4400 60  0001 C CNN
F 3 "" H 3600 4400 60  0000 C CNN
	1    3600 4400
	1    0    0    -1  
$EndComp
$Comp
L SI8442 U1
U 1 1 57F66B15
P 3600 3300
F 0 "U1" H 3600 2700 60  0000 C CNN
F 1 "SI8442" H 3600 3900 60  0000 C CNN
F 2 "u_gen_smt:U_16_SO16W" H 3600 3600 60  0001 C CNN
F 3 "" H 3600 3600 60  0000 C CNN
	1    3600 3300
	1    0    0    -1  
$EndComp
$Comp
L MAX485 U3
U 1 1 57F66B56
P 6000 3550
F 0 "U3" H 6000 3850 60  0000 C CNN
F 1 "MAX485" H 6025 3250 60  0000 C CNN
F 2 "u_gen_smt:U_8_SO8" H 6000 3550 60  0001 C CNN
F 3 "" H 6000 3550 60  0000 C CNN
	1    6000 3550
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 57F66BF9
P 2800 3600
F 0 "C1" V 2900 3600 50  0000 C CNN
F 1 "100n" V 2975 3600 50  0000 C CNN
F 2 "c_gen:C_SMT0805" H 2800 3600 60  0001 C CNN
F 3 "" H 2800 3600 60  0000 C CNN
	1    2800 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 3800 3100 3700
Wire Wire Line
	3100 3700 3200 3700
Connection ~ 3100 3800
Wire Wire Line
	2800 3700 2800 3800
Connection ~ 2800 3800
Wire Wire Line
	3100 3500 3200 3500
Wire Wire Line
	3100 3300 3100 3500
Wire Wire Line
	2800 3400 2800 3500
Connection ~ 2800 3400
Wire Wire Line
	2300 4500 3100 4500
Wire Wire Line
	3100 4300 2400 4300
Wire Wire Line
	4600 3700 4600 5200
Wire Wire Line
	4000 3800 4600 3800
Wire Wire Line
	4000 3700 4100 3700
Wire Wire Line
	4100 3700 4100 3800
Connection ~ 4100 3800
$Comp
L C C2
U 1 1 57F67124
P 4300 3600
F 0 "C2" V 4400 3600 50  0000 C CNN
F 1 "100n" V 4475 3600 50  0000 C CNN
F 2 "c_gen:C_SMT0805" H 4300 3600 60  0001 C CNN
F 3 "" H 4300 3600 60  0000 C CNN
	1    4300 3600
	1    0    0    -1  
$EndComp
$Comp
L C C3
U 1 1 57F67167
P 4600 3600
F 0 "C3" V 4700 3600 50  0000 C CNN
F 1 "100n" V 4775 3600 50  0000 C CNN
F 2 "c_gen:C_SMT0805" H 4600 3600 60  0001 C CNN
F 3 "" H 4600 3600 60  0000 C CNN
	1    4600 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4300 3800 4300 3700
Connection ~ 4300 3800
Connection ~ 4600 3800
Wire Wire Line
	6600 4300 4100 4300
Wire Wire Line
	4900 3400 4900 4300
Wire Wire Line
	4100 3400 4900 3400
Wire Wire Line
	4100 3500 4000 3500
Wire Wire Line
	4300 3500 4300 3400
Connection ~ 4300 3400
Wire Wire Line
	4600 3500 4600 3400
Connection ~ 4600 3400
Wire Wire Line
	5600 3600 5300 3600
Wire Wire Line
	5300 3600 5300 2800
Wire Wire Line
	5300 2800 4000 2800
Wire Wire Line
	4000 2900 5200 2900
Wire Wire Line
	5200 2900 5200 3700
Wire Wire Line
	5200 3700 5600 3700
Wire Wire Line
	5100 3400 5600 3400
Wire Wire Line
	3200 3300 3100 3300
Connection ~ 3100 3400
Wire Wire Line
	4000 3300 4100 3300
Connection ~ 4100 3400
Wire Wire Line
	6500 4500 6500 3700
Wire Wire Line
	6500 3700 6400 3700
Connection ~ 4600 4500
Wire Wire Line
	6600 3200 6600 4300
Wire Wire Line
	6600 3400 6400 3400
Connection ~ 4900 4300
Wire Wire Line
	5600 3500 5500 3500
Wire Wire Line
	5500 3500 5500 4500
Connection ~ 5500 4500
$Comp
L R R3
U 1 1 57F67A1C
P 7800 4200
F 0 "R3" V 7880 4200 50  0000 C CNN
F 1 "560" V 7800 4200 50  0000 C CNN
F 2 "r_gen:R_SMT0805" H 7800 4200 60  0001 C CNN
F 3 "" H 7800 4200 60  0000 C CNN
	1    7800 4200
	0    1    1    0   
$EndComp
$Comp
L R R2
U 1 1 57F67A57
P 7800 3800
F 0 "R2" V 7880 3800 50  0000 C CNN
F 1 "120" V 7800 3800 50  0000 C CNN
F 2 "r_gen:R_SMT0805" H 7800 3800 60  0001 C CNN
F 3 "" H 7800 3800 60  0000 C CNN
	1    7800 3800
	0    1    1    0   
$EndComp
$Comp
L R R1
U 1 1 57F67A73
P 7800 3200
F 0 "R1" V 7880 3200 50  0000 C CNN
F 1 "560" V 7800 3200 50  0000 C CNN
F 2 "r_gen:R_SMT0805" H 7800 3200 60  0001 C CNN
F 3 "" H 7800 3200 60  0000 C CNN
	1    7800 3200
	0    1    1    0   
$EndComp
Connection ~ 6500 4500
$Comp
L JUMPER J3
U 1 1 57F67CF2
P 7200 4200
F 0 "J3" H 7200 4300 60  0000 C CNN
F 1 "JUMPER" H 7200 4100 60  0000 C CNN
F 2 "j_gen:J_2_TH100I" H 7200 4200 60  0001 C CNN
F 3 "" H 7200 4200 60  0000 C CNN
	1    7200 4200
	1    0    0    -1  
$EndComp
Wire Wire Line
	4100 4500 9800 4500
Wire Wire Line
	7400 4200 7600 4200
$Comp
L JUMPER J2
U 1 1 57F67FC4
P 7200 3800
F 0 "J2" H 7200 3900 60  0000 C CNN
F 1 "JUMPER" H 7200 3700 60  0000 C CNN
F 2 "j_gen:J_2_TH100I" H 7200 3800 60  0001 C CNN
F 3 "" H 7200 3800 60  0000 C CNN
	1    7200 3800
	-1   0    0    -1  
$EndComp
$Comp
L JUMPER J1
U 1 1 57F68046
P 7200 3200
F 0 "J1" H 7200 3300 60  0000 C CNN
F 1 "JUMPER" H 7200 3100 60  0000 C CNN
F 2 "j_gen:J_2_TH100I" H 7200 3200 60  0001 C CNN
F 3 "" H 7200 3200 60  0000 C CNN
	1    7200 3200
	-1   0    0    -1  
$EndComp
Wire Wire Line
	6400 3600 9900 3600
Wire Wire Line
	8100 3600 8100 3200
Wire Wire Line
	8100 3200 8000 3200
Wire Wire Line
	7000 3200 6600 3200
Connection ~ 6600 3400
Wire Wire Line
	7400 3200 7600 3200
Wire Wire Line
	6400 3500 9900 3500
Wire Wire Line
	8200 3500 8200 4200
Wire Wire Line
	8200 4200 8000 4200
Wire Wire Line
	8000 3800 8200 3800
Connection ~ 8200 3800
Wire Wire Line
	7000 3800 6900 3800
Wire Wire Line
	6900 3800 6900 3600
Connection ~ 6900 3600
Wire Wire Line
	8500 4500 8500 4400
Wire Wire Line
	9400 4500 9400 4400
Connection ~ 8500 4500
Wire Wire Line
	9400 3500 9400 4000
Wire Wire Line
	9400 3900 9200 3900
Wire Wire Line
	8500 3600 8500 4000
Wire Wire Line
	8500 3900 8800 3900
Connection ~ 8500 3900
Connection ~ 8100 3600
Connection ~ 9400 3900
Connection ~ 8200 3500
Wire Wire Line
	7600 3800 7400 3800
$Comp
L CONN_3 P2
U 1 1 57F68AA3
P 10100 3600
F 0 "P2" H 10100 3900 60  0000 C CNN
F 1 "RS485" H 10100 3800 60  0000 C CNN
F 2 "p_gen_conn:P_3_SCRTERM_5M" H 10100 3600 60  0001 C CNN
F 3 "" H 10100 3600 60  0000 C CNN
	1    10100 3600
	-1   0    0    1   
$EndComp
Wire Wire Line
	9900 3700 9800 3700
Wire Wire Line
	9800 3700 9800 4500
Connection ~ 9400 4500
Connection ~ 8500 3600
Connection ~ 9400 3500
Wire Wire Line
	4100 3100 4100 3500
Wire Wire Line
	5100 3400 5100 3000
Wire Wire Line
	5100 3000 4000 3000
Wire Wire Line
	4000 3100 4100 3100
Connection ~ 4100 3300
$Comp
L HOLE M1
U 1 1 57F7174F
P 7700 5200
F 0 "M1" H 7700 5050 60  0000 C CNN
F 1 "HOLE" H 7700 5350 60  0000 C CNN
F 2 "mech_gen:HOLE_4_2MM_8_4" H 7700 5200 60  0001 C CNN
F 3 "" H 7700 5200 60  0000 C CNN
	1    7700 5200
	1    0    0    -1  
$EndComp
$Comp
L HOLE M2
U 1 1 57F717E2
P 8000 5200
F 0 "M2" H 8000 5050 60  0000 C CNN
F 1 "HOLE" H 8000 5350 60  0000 C CNN
F 2 "mech_gen:HOLE_4_2MM_8_4" H 8000 5200 60  0001 C CNN
F 3 "" H 8000 5200 60  0000 C CNN
	1    8000 5200
	1    0    0    -1  
$EndComp
Text Label 2800 4500 0    60   ~ 0
GNDA
Text Label 4200 4500 0    60   ~ 0
GNDB
Text Label 4200 4300 0    60   ~ 0
+5VB
Text Label 2800 4300 0    60   ~ 0
+5VA
Text Label 2400 3400 0    60   ~ 0
+3.3VA
Text Label 2400 3100 0    60   ~ 0
CTSA
Text Label 2400 3300 0    60   ~ 0
RXDA
Text Label 2400 3200 0    60   ~ 0
TXDA
Text Label 4200 2800 0    60   ~ 0
RTSB
Text Label 4200 2900 0    60   ~ 0
TXDB
Text Label 4200 3000 0    60   ~ 0
RXDB
Wire Wire Line
	7000 4200 6900 4200
Wire Wire Line
	6900 4200 6900 4500
Connection ~ 6900 4500
$Comp
L VIA V1
U 1 1 57F74124
P 2500 5200
F 0 "V1" H 2500 5270 60  0000 C CNN
F 1 "VIA" H 2500 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 2500 5200 60  0001 C CNN
F 3 "" H 2500 5200 60  0000 C CNN
	1    2500 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V2
U 1 1 57F74167
P 2700 5200
F 0 "V2" H 2700 5270 60  0000 C CNN
F 1 "VIA" H 2700 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 2700 5200 60  0001 C CNN
F 3 "" H 2700 5200 60  0000 C CNN
	1    2700 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V3
U 1 1 57F74196
P 2900 5200
F 0 "V3" H 2900 5270 60  0000 C CNN
F 1 "VIA" H 2900 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 2900 5200 60  0001 C CNN
F 3 "" H 2900 5200 60  0000 C CNN
	1    2900 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V4
U 1 1 57F7419C
P 3100 5200
F 0 "V4" H 3100 5270 60  0000 C CNN
F 1 "VIA" H 3100 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 3100 5200 60  0001 C CNN
F 3 "" H 3100 5200 60  0000 C CNN
	1    3100 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V5
U 1 1 57F74201
P 3300 5200
F 0 "V5" H 3300 5270 60  0000 C CNN
F 1 "VIA" H 3300 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 3300 5200 60  0001 C CNN
F 3 "" H 3300 5200 60  0000 C CNN
	1    3300 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V6
U 1 1 57F74207
P 3500 5200
F 0 "V6" H 3500 5270 60  0000 C CNN
F 1 "VIA" H 3500 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 3500 5200 60  0001 C CNN
F 3 "" H 3500 5200 60  0000 C CNN
	1    3500 5200
	1    0    0    -1  
$EndComp
Connection ~ 3300 5200
Connection ~ 3100 5200
Connection ~ 2900 5200
Connection ~ 2700 5200
Connection ~ 2500 5200
$Comp
L VIA V11
U 1 1 57F74D22
P 4800 5200
F 0 "V11" H 4800 5270 60  0000 C CNN
F 1 "VIA" H 4800 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 4800 5200 60  0001 C CNN
F 3 "" H 4800 5200 60  0000 C CNN
	1    4800 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V12
U 1 1 57F74D28
P 5000 5200
F 0 "V12" H 5000 5270 60  0000 C CNN
F 1 "VIA" H 5000 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 5000 5200 60  0001 C CNN
F 3 "" H 5000 5200 60  0000 C CNN
	1    5000 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V13
U 1 1 57F74D2E
P 5200 5200
F 0 "V13" H 5200 5270 60  0000 C CNN
F 1 "VIA" H 5200 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 5200 5200 60  0001 C CNN
F 3 "" H 5200 5200 60  0000 C CNN
	1    5200 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V14
U 1 1 57F74D34
P 5400 5200
F 0 "V14" H 5400 5270 60  0000 C CNN
F 1 "VIA" H 5400 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 5400 5200 60  0001 C CNN
F 3 "" H 5400 5200 60  0000 C CNN
	1    5400 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V15
U 1 1 57F74D3A
P 5600 5200
F 0 "V15" H 5600 5270 60  0000 C CNN
F 1 "VIA" H 5600 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 5600 5200 60  0001 C CNN
F 3 "" H 5600 5200 60  0000 C CNN
	1    5600 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V16
U 1 1 57F74D40
P 5800 5200
F 0 "V16" H 5800 5270 60  0000 C CNN
F 1 "VIA" H 5800 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 5800 5200 60  0001 C CNN
F 3 "" H 5800 5200 60  0000 C CNN
	1    5800 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V17
U 1 1 57F74D46
P 6000 5200
F 0 "V17" H 6000 5270 60  0000 C CNN
F 1 "VIA" H 6000 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 6000 5200 60  0001 C CNN
F 3 "" H 6000 5200 60  0000 C CNN
	1    6000 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V18
U 1 1 57F74D4C
P 6200 5200
F 0 "V18" H 6200 5270 60  0000 C CNN
F 1 "VIA" H 6200 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 6200 5200 60  0001 C CNN
F 3 "" H 6200 5200 60  0000 C CNN
	1    6200 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V19
U 1 1 57F74D52
P 6400 5200
F 0 "V19" H 6400 5270 60  0000 C CNN
F 1 "VIA" H 6400 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 6400 5200 60  0001 C CNN
F 3 "" H 6400 5200 60  0000 C CNN
	1    6400 5200
	1    0    0    -1  
$EndComp
$Comp
L VIA V20
U 1 1 57F74D58
P 6600 5200
F 0 "V20" H 6600 5270 60  0000 C CNN
F 1 "VIA" H 6600 5350 60  0000 C CNN
F 2 "misc:VIA25MIL" H 6600 5200 60  0001 C CNN
F 3 "" H 6600 5200 60  0000 C CNN
	1    6600 5200
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 5200 6600 5200
Connection ~ 6400 5200
Connection ~ 6200 5200
Connection ~ 6000 5200
Connection ~ 5800 5200
Connection ~ 5600 5200
Connection ~ 5400 5200
Connection ~ 5200 5200
Connection ~ 5000 5200
Connection ~ 4800 5200
Connection ~ 2300 4500
Wire Wire Line
	2300 5200 3500 5200
Wire Wire Line
	2300 3600 2300 5200
Wire Wire Line
	2300 3700 2200 3700
Wire Wire Line
	2300 3600 2200 3600
Connection ~ 2300 3700
Wire Wire Line
	2300 3800 3200 3800
Connection ~ 2300 3800
Wire Wire Line
	2200 3400 3100 3400
Wire Wire Line
	2200 3500 2400 3500
Wire Wire Line
	2400 3500 2400 4300
Wire Wire Line
	2200 2800 2300 2800
Wire Wire Line
	2300 2800 2300 3400
Connection ~ 2300 3400
Wire Wire Line
	2200 3000 2700 3000
Wire Wire Line
	2700 3000 2700 2800
Wire Wire Line
	2700 2800 3200 2800
Wire Wire Line
	2200 3200 2800 3200
Wire Wire Line
	2800 3200 2800 2900
Wire Wire Line
	2800 2900 3200 2900
Wire Wire Line
	2200 3300 2900 3300
Wire Wire Line
	2900 3300 2900 3000
Wire Wire Line
	2900 3000 3200 3000
Wire Wire Line
	2200 3100 3200 3100
Text Label 2400 3000 0    60   ~ 0
RTSA
Text Label 9700 3500 0    60   ~ 0
A
Text Label 9700 3600 0    60   ~ 0
B
$Comp
L TVS-BIDIRECTIONAL D1
U 1 1 57FA35B8
P 8500 4200
F 0 "D1" V 8600 4200 50  0000 C CNN
F 1 "PSD12C" V 8675 4200 50  0000 C CNN
F 2 "d_gen:D_SOD323" H 8500 4250 60  0001 C CNN
F 3 "" H 8500 4250 60  0000 C CNN
	1    8500 4200
	1    0    0    -1  
$EndComp
$Comp
L TVS-BIDIRECTIONAL D3
U 1 1 57FA3F52
P 9400 4200
F 0 "D3" V 9500 4200 50  0000 C CNN
F 1 "PSD12C" V 9575 4200 50  0000 C CNN
F 2 "d_gen:D_SOD323" H 9400 4250 60  0001 C CNN
F 3 "" H 9400 4250 60  0000 C CNN
	1    9400 4200
	1    0    0    -1  
$EndComp
$Comp
L TVS-BIDIRECTIONAL D2
U 1 1 57FA3F87
P 9000 3900
F 0 "D2" V 9100 3900 50  0000 C CNN
F 1 "PSD12C" V 9175 3900 50  0000 C CNN
F 2 "d_gen:D_SOD323" H 9000 3950 60  0001 C CNN
F 3 "" H 9000 3950 60  0000 C CNN
	1    9000 3900
	0    1    1    0   
$EndComp
$EndSCHEMATC