LTC2846 Linear Technology, LTC2846 Datasheet - Page 19

• Manufacturer Part Number: LTC2846
• Description: 3.3V Software-Selectable Multiprotocol Transceiver with Termination
• Manufacturer: Linear Technology

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TYPICAL APPLICATIO S
4
M0
M1
M2
3.3V
V
IN
1 F
C7
SCTE
DSR
TXD
TXC
RXC
RXD
RTS
DTR
DCD
CTS
C6
10 F
V
LL
5V
CC
Figure 31. Controller-Selectable Multiprotocol DTE Port with DB-25 Connector
U
C3
1 F
1 F
C1
C8
1 F
SHDN
V
CC
10
11
12
13
14
15
16
18
19
10
11
12
13
14
4
7
5
6
8
9
1
2
3
4
5
6
7
8
9
V
V
M0
M1
M2
DCE/DTE
M0
M1
M2
DCE/DTE
3
CC
DD
REGULATOR
SWITCHING
D1
D2
D3
CHARGE
LTC2846
LTC2844
D1
D2
D3
D4
BOOST
PUMP
5.6 H
R1
R2
R3
R1
R2
R3
R4
L1
GND
T
T
T
T
T
V
V
EE
IN
36
35
33
32
31
30
29
28
27
26
25
24
23
22
21
20
17 V
28
27
26
25
24
23
22
21
20
19
18
17
16
15
3.3V
IN
MBR0520
+
D1
C2
1 F
C4
3.3 F
C10
1 F
V
3.3V
IN
C9
1 F
R1
13k
R2
4.3k
C5
10 F
V
5V
CC
12
14
24
11
15
17
16
19
20
10
22
13
18
23
2
9
7
1
4
8
6
5
3
DSR A (107)
DSR B
SG
SHIELD
RTS A (105)
RTS B
DTR A (108)
DTR B
DCD A (109)
DCD B
CTS A (106)
CTS B
LL A (141)
TXD A (103)
TXD B
SCTE A (113)
SCTE B
TXC A (114)
TXC B
RXC A (115)
RXC B
RXD A (104)
RXD B
DB-25 MALE
CONNECTOR
LTC2846
2846 F31
sn2846 2846fs
19