A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
Application for RS-232 Transceiver
Please make C2 close to the 20th pin of U1.
Please make C3 close to the 17th pin of U1.
Please make C7 close to USB_CONB.
Please make R4 close to the 14th pin of U1.
Please make R3 close to the 15th pin of U1.
# The traces between DM and DP of PL-2303
and USB connector should be parallel
and also not cross any signal traces.
# The length of them is suggested as
short as possible.
1 104/03/2006
namePL-2303HXD-QFN32
1.0
B
SizeDesignerDrawing Name
Version Sheet
of
Date
RI-R
RXD-R
DCD-R
DCD-RC
DCD-RC
DSR-RC
RXD-RC
RTS-TC
RTS-T
RXD-RC
TXD-T
RI-RC
RI-RC
TXD-TC
DTR-TC
DTR-TC
SHTD_N
DTR-T
CTS-R
CTS-RC
TXD-TC
CTS-RC
DSR-R
RTS-TC
DSR-RC
CTS-R
RI-R
DCD-R
R
T
S
-
T
S
H
T
D
_
N
D
T
R
-
T
T
X
D
-
T
RXD-R
DSR-R
VDD5
VO_33
VO_33
VO_33
VDD5
VDD5
VO_33
VDD5VO_33
R3 27/0603
L2
FBM0805PT800S
PL-2303HXD-QFN32
U1
1
2
3
4
5
6
7
8
9 1
0
1
1
1
2
1
3
1
4
1
5
1
6
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
24
23
22
21
20
19
18
17
VDD_325
RXD
RI_N
GND
VDD_3.3
DSR_N
DCD_N
CTS_N
S
H
T
D
_
N
G
P
3
G
P
2
N
C
N
C
D
P
D
M
N
C
R
T
S
_
N
D
T
R
_
N
T
X
D
N
C
N
C
R
E
S
E
R
V
E
D
T
E
S
T
G
N
D
NC
GP1
GP0
NC
VDD_5
RESET_N
GND
VO_3.3
USB1
USB_CONB
1
2
3
4
5
6
VBUS
D-
D+
GND
C-GND
C-GND
L1
FBM0805PT800S
U2
SP213EH
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28T3out
T1out
T2out
R2in
R2out
T2in
T1in
R1out
R1in
GND
VCC
C1+
V+
C1- C2+
C2-
V-
R5in
R5out
T3in
T4in
R4out
R4in
EN
SD#
R3out
R3in
T4out
C1
0.1U/0603
C3
0.1U/0603
R4 27/0603
C7
10UF/0805
P1
CONNECTOR DB9
5
9
4
8
3
7
2
6
1
C2
0.1U/0603
R2
1.5K/0603
C9
0.1U/0603C80.1U/0603
C6
0.1U/0603
R1
4.7K/0603
C5
0.1U/0603
C4
0.1U/0603
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