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
VCC
5V
3
28
C3
1µF
C1
1µF
1
27
CHARGE
26
2
PUMP
4
25
C5
1µF
LTC1546
24
5
D1
T 23
6
D2
7
22
T 21
DTE_TXC/DCE_TXC
DTE_RXC/DCE_SCTE
DTE_RXD/DCE_TXD
D3
T
20
8
R1
19
18
9
R2 T 17
16
10
R3 T 15
11 M0
12 M1
13
NC
M2
14 DCE/DTE
C2
1µF
C4
3.3µF
C10
1µF
DTE_RTS/DCE_CTS
DTE_DTR/DCE_DSR
DTE_DCD/DCE_DCD
DTE_DSR/DCE_DTR
DTE_CTS/DCE_RTS
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
R4
16
9
D4
11
M0
12
M1
13
NC
14
M2
DCE/DTE INVERT
15
NC
LTC1546
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
TXC A
TXC B
SCTE A
SCTE B
TXD A
TXD B
1 SHIELD
DB-25
CONNECTOR
25
21 DCE/DTE
M1
18 M0
4 RTS A CTS A
19 RTS B
20
DTR A
23
DTR B
CTS B
DSR A
DSR B
CABLE WIRING FOR MODE SELECTION
MODE
PIN 18
PIN 21
V.35
PIN 7
PIN 7
RS449, V.36
NC
PIN 7
RS232
PIN 7
NC
CABLE WIRING FOR
DTE/DCE SELECTION
MODE
PIN 25
DTE
PIN 7
DCE
NC
8
DCD A
10
DCD B
6
DSR A
22
DSR B
5
CTS A
13
CTS B
DCD A
DCD B
DTR A
DTR B
RTS A
RTS B
1546 F33
Figure 33. Cable-Selectable Multiprotocol DTE/DCE Port with DB-25 Connector
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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