LTC1546I View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1546I Datasheet PDF : 20 Pages
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TYPICAL APPLICATIO S
DTE_TXD/DCE_RXD
DTE_SCTE/DCE_RXC
DTE_TXC/DCE_TXC
DTE_RXC/DCE_SCTE
DTE_RXD/DCE_TXD
VCC
5V
3
28
C3
1µF
C1
1µF
C5
1µF
1
27
CHARGE
26
2
PUMP
4
25
LTC1546
24
5
D1
T 23
6
D2
22
T 21
7
D3
T
20
8
R1
19
18
9
R2 T 17
16
10
R3 T 15
11 M0
12 M1
13
M2
14 DCE/DTE
C2
1µF
C4
3.3µF
LTC1546
DTE
2
TXD A
DCE
RXD A
14
TXD B
24
SCTE A
RXD B
RXC A
11
SCTE B RXC B
15 TXC A
12
TXC B
17
RXC A
9
RXC B
3
RXD A
16
RXD B
7
SG
TXC A
TXC B
SCTE A
SCTE B
TXD A
TXD B
1 SHIELD
M0
M1
M2
DCE/DTE
C10
1µF
DTE_RTS/DCE_CTS
DTE_DTR/DCE_DSR
DTE_DCD/DCE_DCD
DTE_DSR/DCE_DTR
DTE_CTS/DCE_RTS
DTE_LL/DCE_LL
C9 VCC
1µF
1 VCC
2 VDD
28
VEE 27
GND
C11
1µF
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
Figure 31. Controller-Selectable Multiprotocol DTE/DCE Port with DB-25 Connector
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
1546 F31
17
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