ltc2845 Linear Technology Corporation, ltc2845 Datasheet - Page 16

• Manufacturer Part Number: ltc2845
• Description: 3.3v Software-selectable Mutiprotocol Transceiver
• Manufacturer: Linear Technology Corporation

LTC2845
16
TYPICAL APPLICATIONS
M0
M1
M2
1 F
C7
3.3V
V
IN
SCTE
RXD
1 F
RXC
TXC
TXD
C8
Figure 24. Controller-Selectable DCE Port with DB-25 Connector
C6
10 F
V
5V
CC
U
C3
1 F
V
DD
DSR
DCD
DTR
RTS
CTS
TM
RL
LL
RI
8V
1 F
C1
SHDN
NC
NC
M0
M1
M2
DCE/DTE
V
V
M0
M1
M2
DCE/DTE
CC
DD
REGULATOR
LTC2845
SWITCHING
D3
D1
D2
CHARGE
LTC2846
D1
D2
D3
D4
D5
BOOST
PUMP
5.6 H
R1
R2
R3
R1
R2
R3
R4
R5
L1
D4ENB
R4EN
GND
T
T
T
T
T
V
V
EE
IN
D1 MBR0520
NC
V
3.3V
+
IN
C2
1 F
C4
3.3 F
C10
1 F
V
–7.5V
EE
C9
1 F
V
3.3V
R1
13k
R2
4.3k
IN
C5
10 F
*OPTIONAL
14
24
11
15
12
24
11
14
13
22
10
20
23
19
18
21
25
V
5V
2
2
7
1
5
6
8
4
*
CC
RXD A (104)
RXD B
RXC A (115)B
RXC B
TXC A (114)
TXC B
SCTE A (113)
SCTE B
TXD A (103)
TXD B
SG (102)
SHIELD (101)
CTS A (106)
CTS B
DSR A (107)
DSR B
DCD A (109)
DCD B
DTR A (108)
DTR B
RTS A (105)
RTS B
RI (125)
LL (141)
RL (140)
TM (142)
DB-25 FEMALE
CONNECTOR
2845 F24
sn2845 2845fs