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Part Name
Description
LTC1543C View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1543C
Software-Selectable Multiprotocol Transceiver
Linear Technology
LTC1543C Datasheet PDF : 20 Pages
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LTC1543
TYPICAL APPLICATIONS
DTE_TXD/DCE_RXD
DTE_SCTE/DCE_RXC
DTE_TXC/DCE_TXC
DTE_RXC/DCE_SCTE
DTE_RXD/DCE_TXD
V
CC
5V
3
28
C3
1
µ
F
C1
1
µ
F
1
27
CHARGE
26
2
PUMP
4
25
C5
1
µ
F
LTC1543
24
5
D1
23
22
6
D2
21
7
D3
8
R1
9
R2
10
R3
11
M0
12
M1
13
M2
14
DCE/DTE
20
S
19
S
18
17
16
15
C2
1
µ
F
C4
3.3
µ
F
C6 C7 C8
100pF 100pF 100pF
3 8 11 12 13
LTC1344A
14
V
CC
C13
1
µ
F
21
LATCH
2
V
EE
C12
1
µ
F
5 4 6 7 9 10
16 15 18 17 19 20 22 23 24 1
DTE
2
TXD A
14
TXD B
24
SCTE A
11
SCTE B
DCE
RXD A
RXD B
RXC A
RXC B
15
TXC A
12
TXC B
17
RXC A
9
RXC B
3
RXD A
16
RXD B
7
SG
1
SHIELD
TXC A
TXC B
SCTE A
SCTE B
TXD A
TXD B
C10
1
µ
F
DTE_RTS/DCE_CTS
DTE_DTR/DCE_DSR
DTE_DCD/DCE_DCD
DTE_DSR/DCE_DTR
DTE_CTS/DCE_RTS
DTE_LL/DCE_LL
DCE/DTE
M2
M1
M0
C9
V
CC
1
µ
F
1
V
CC
2
V
DD
28
V
EE
27
GND
C11
1
µ
F
26
3
D1
25
24
4
D2
23
5
D3
LTC1544
22
6
R1
21
20
7
R2
19
18
8
R3
17
10
16
R4
9
D4
11
15
M0
INVERT
NC
12
M1
13
M2
14
DCE/DTE
DB-25
CONNECTOR
4
RTS A
19
RTS B
20
DTR A
23
DTR B
CTS A
CTS B
DSR A
DSR B
8
DCD A
10
DCD B
6
DSR A
22
DSR B
5
CTS A
13
CTS B
18
LL A
DCD A
DCD B
DTR A
DTR B
RTS A
RTS B
LL A
Figure 25. Controller-Selectable Multiprotocol DTE/DCE Port with DB-25 Connector
1543 F25
17
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