LTC1343 Linear Technology, LTC1343 Datasheet - Page 20

• Manufacturer Part Number: LTC1343
• Description: Software-Selectable Multiprotocol Transceiver
• Manufacturer: Linear Technology

LTC1343
APPLICATIONS
20
LATCH
SCTE
DSR
DCD
RXD
RXC
TXD
DTR
TXC
CTS
CTS
TM
M2
M1
M0
RL
LL
LB
+
U
V
+
CC
C3
1 F
V
V
V
CC
C11
1 F
CC
CC
+
+
V
5V
CC
Figure 32: Controller-Selectable Multiprotocol DCE Port with DB-25 Connector
INFORMATION
1 F
1 F
100k
100k
C1
C9
U
C12
1 F
C5
1 F
R1
R2
+
+
40
23
40
23
10
12
13
14
15
16
20
22
11
25
10
12
13
14
15
16
20
22
11
25
1
2
4
3
8
1
2
4
3
8
5
6
7
5
9
9
6
7
CTRL
LATCH
INVERT
423 SET
GND
LB
CTRL
LATCH
INVERT
423 SET
GND
LB
LTC1343
LTC1343
W
CHARGE
CHARGE
PUMP
PUMP
D1
D2
D3
D4
D1
D2
D3
D4
R2
R4
R2
R4
R1
R3
R1
R3
DCE
DCE
M2
M1
M0
M2
M1
M0
EC
EC
44
43
42
41
39
38
37
36
35
34
33
32
31
30
29
28
27
26
21
19
18
17
24
44
43
42
41
39
38
37
36
35
34
33
32
31
30
29
28
27
26
21
19
18
17
24
V
+
+
+
+
V
V
U
CC
CC
CC
C2
1 F
C4
3.3 F
C10
1 F
C13
3.3 F
14
2
V
V
CC
EE
100pF
C6
3
5
4
100pF
C7
8
6
7
100pF
C8
11
9
10
12
16
13
15
18
17
19
20 22 23 24 1
DCE/
DTE
V
CC
LTC1344
M2
M1
LATCH
M0
21
16
17
15
12
11
14
18
13
22
10
20
23
19
25
24
21
7
1
5
6
8
4
3
9
2
LATCH
SGND (102)
SHIELD (101)
TM A (142)
RXD A (104)
RXD B
RXC A (115)
RXC B
TXC A (114)
TXC B
SCTE A (113)
SCTE B
TXD A (103)
TXD B
LL A (141)
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
RL A (140)
DB-25 FEMALE
CONNECTOR
1343 F32