3.3V
GND
GND
GND
33
R19
33
R11
33
R12
33
R13
33
R14
33
R15
33
R16
33
R52
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J22
IOR
RESET_5V
33
R8
33
R9
33
R10
A0
A1
A2
33
R51
33
R23
33
R21
CS
33
R18
VCCA
1
DIR
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
11
GND
12
GND
13
B8
14
B7
15
B6
16
B5
17
B4
18
B3
19
B2
20
B1
21
OE
22
VCCB
23
VCCB
24
SN74LVC8T245DWR
U8
GND
1uF
C18
GND
1uF
C16
GND
10.0k
R97
3.3V
3.3V
GND
10.0k
R77
GND
3.3V
A0_5V
A1_5V
A2_5V
RESET_5V
A0_5V
A1_5V
A2_5V
VCC
TP2
Vuart
VCC
GND
GND
3.3V
GND
4.7k
R61
A1
1
VCCA
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
OE
10
GND
11
B8
12
B7
13
B6
14
B5
15
B4
16
B3
17
B2
18
VCCB
19
B1
20
TXS0108EPWR
U4
33
R31
33
R32
33
R33
33
R34
33
R35
33
R36
33
R37
33
R38
GND
3.3V
D0_5V
D1_5V
D2_5V
D3_5V
D4_5V
D5_5V
D6_5V
D7_5V
D0
D1
D3
D4
D5
D6
D7
D2
GND
TP5
5010
XTAL2
XTAL2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J23
VCCA
1
DIR
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
11
GND
12
GND
13
B8
14
B7
15
B6
16
B5
17
B4
18
B3
19
B2
20
B1
21
OE
22
VCCB
23
VCCB
24
SN74LVC8T245DWR
U9
GND
1uF
C19
GND
1uF
C17
GND
10.0k
R98
3.3V
3.3V
GND
10.0k
R79
GND
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J18
33
R48
33
R44
33
R46
33
R47
CD
RI
RI
RI_5V
RI_5V
A0
A1
A2
RI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J20
VCCA
1
DIR
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
11
GND
12
GND
13
B8
14
B7
15
B6
16
B5
17
B4
18
B3
19
B2
20
B1
21
OE
22
VCCB
23
VCCB
24
SN74LVC8T245DWR
U7
GND
1uF
C15
GND
1uF
C13
GND
10.0k
R92
3.3V
3.3V
GND
GND
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J13
VCC
10.0k
R71
DTR
10.0k
R66
10.0k
R70
GND
OP
RTS
33
R45
33
R49
33
R50
33
R22
33
R20
DTR
RTS
OP
33
R43
D4
RESET diode
120
R62
3.3V
GND
VCC
1
2
3
4
S1
MR
4.7k
R68
3.3V
TP3
5010
GND
110
R24
D2
1
2
3
4
5
J5
GND
TX
RX
1uF
C8
GND
VCC
1uF
C6
GND
33
R55
GND
TP7
5V TXRDY
GND
TP8
TX
A
3
VCCA
1
B
4
DIR
5
GND
2
VCCB
6
SN74LVC1T45DBVT
U6
1uF
C14
GND
VCC
1uF
C12
GND
3.3V
33
R74
GND
TP10
5V RXRDY
GND
TP6
RXRDY
3.3V
4.7k
R67
0
R69
DNP
3.3V
33
R82
33
R83
33
R84
33
R86
33
R87
33
R88
33
R89
DTR 5V
RTS 5V
OP 5V
DTR 5V
RTS 5V
OP 5V
10.0k
R102
3.3V
10.0k
R103
3.3V
10.0k
R104
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
19
21
23
25
27
29
31
16
18
20
22
24
26
28
30
32
J12
D0
D1
D2
D3
D4
D5
D6
D7
GND
GND
A0
A1
A2
A0
A1
A2
GND
GND
GND
XU1
DNP
1uF
C1
0.1µF
C3
50V
0.01µF
C5
0
R56
0
R53
0
R59
DNP
MR-RESET
MR-RESET
30
R41
CD
DSR
CTS
CD
DSR
CTS
CD_5V
DSR_5V
CTS_5V
CD_5V
DSR_5V
CTS_5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J2
D0_5V
D1_5V
D2_5V
D3_5V
D4_5V
D5_5V
D6_5V
D7_5V
3.3V
10.0k
R3
1
2
3
J1
GND
GND
GND
GND
Mode
0
R17
3.3V
GND
3
GND
4
Y2
6
Y1
7
INH
2
A
5
COM
1
VCC
8
SN74LVC2G53DCUR
U1
IOR
IOR_mcu
3.3V
3.3V
0.1µF
C4
GND
GND
Mode
0
R5
0
R40
DNP
GND
0
R4
0.1µF
C2
GND
10k
R28
10k
R2
10k
R7
GND
GND
TP12
GND
TP14
GND
TP15
GND
TP16
GND
TP17
GND
TP18
GND
TP11
GND
TP13
GND
GND
1
J8
1
J17
DIR HI = AtoB
DIR LOW = BtoA
DIR LOW = BtoA
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
19
21
23
25
27
16
18
20
22
24
26
28
J14
GND
4
B2
6
B1
7
DIR
5
A1
2
A2
3
VCCA
1
VCCB
8
SN74LVC2T45DCTR
U3
0
R29
DNP
33
R42
10.0k
R65
1
J6
5V INT
3.3V
INT
INT 5V
10.0k
R27
33
R85
TX_5V
TX_5V
TX
TX
RX
RX
RX_5V
RX_5V
10.0k
R63
1
2
Y1
RESET
1
GND
2
RESET
3
MR
4
VDD
5
TPS3125L30DBVR
U5
GND
MR
0
R39
RESET
3
2
1
Q1
D1
INT Indicator
120
R6
3.3V
INT
GND
3
2
1
Q2
GND
3
2
1
Q3
MR
GND
DTR
10k
R81
MR-RESET
820
R91
TXRDY
TXRDY 5V
RXRDY
RXRDY 5V
TP4
5V INT
TP1
TXRDY
CS
IOW
IOR_mcu
CS
IOW
IOR_mcu
CS
IOW
IOR_mcu
CS_5V
IOW_V
IOR_5V
CS_5V
IOW_V
IOR_5V
TP9
RX
100k
R57
RESET
VCC
10k
R112
VCC
VCC
10k
R111
10k
R106
10k
R113
10.0k
R114
GND
10.0k
R115
3.3V
120
R117
3.3V
GND
TXRDY
120
R116
3.3V
GND
RXRDY
D6
D8
3
1
2
Q5
3
2
1
Q4
TXRDY/RXRDY: When below trigger point, light turns on
10k
R118
GND
10k
R119
3.3V
1
2
3
J4
GND
1
2
3
J3
TXRDY
RXRDY
INT
D5
2
D6
3
D7
4
RX
7
TX
8
MODE
10
CS
11
A2
26
A1
27
A0
28
RXRDY
29
INT
30
OP
31
RTS
32
DTR
33
RESET
35
CTS
38
DSR
39
CD
40
RI
41
VCC
42
D0
43
D1
44
D2
45
D3
46
D4
47
XTAL1
14
XTAL2
15
IOW
16
VSS
18
IOR
19
TXRDY
23
NC
1
NC
5
NC
6
NC
9
NC
12
NC
25
NC
34
NC
36
NC
37
NC
48
NC
13
NC
17
NC
20
NC
21
NC
22
NC
24
TL16C750EPFB
U2
XTAL1
IOW
TX
RESET
RX
CTS
DSR
XTAL1
D7
D6
RXRDY
TXRDY
D5
D4
D3
D2
RTS
D1
D0
0
R120
DNP
OP
1
2
J9
1
2
J7
1
2
J15
1
2
J25
1
2
J21
LoopBack Enable
1
2
J24
1
2
J16
1
2
J19
1
2
J11
1uF
C7
1uF
C9
33pF
C10
33pF
C11
0
R1
0
R25
0
R30
0
R54
0
R60
0
R64
0
R72
0
R73
0
R75
0
R76
0
R78
0
R80
0
R90
0
R93
0
R94
0
R95
0
R96
0
R99
0
R100
0
R101
100k
R58
GND
3.3V
GND
1
2
3
J30
100k
R26
1
2
3
J31
INT
SH-J30
SH-J31
D0
D1
D2
D3
D4
D5
D6
D7
Schematic and Bill of Materials
12
SLLU317 – January 2020
Copyright © 2020, Texas Instruments Incorporated
TL16C750EEVM User's Guide
11
Schematic and Bill of Materials
11.1 Schematic
Figure 12. Schematic page 1