LTC1343 Linear Technology, LTC1343 Datasheet - Page 26

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

LTC1343
APPLICATIONS
26
DTE_SCTE/DEC_RXC
DTE_RXC/DCE_SCTE
DTE_RXD/DCE_TXD
DTE_TXD/DCE_RXD
DTE_DCD/DCE_DCD
DTE_DTR/DCE_DSR
DTE_DSR/DCE_DTR
DTE_TXC/DCE_TXC
DTE_RTS/DCE_CTS
DTE_CTS/DCE_RTS
DTE_TM/DCE_LL
DTE_LL/DCE_TM
DTE_RL/DCE_RI
DTE_RI/DCE_RL
DCE/DTE
LATCH
M2
M1
M0
LB
U
+
Figure 38. Controller-Selectable Multiprotocol DTE/DCE Port with DB-26 Connector
V
+
CC
INFORMATION
C3
1 F
U
C11
1 F
+
V
+
V
CC
5V
CC
1 F
1 F
100k
100k
C9
C1
C12
1 F
R1
R2
C5
1 F
+
+
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
W
GND
LB
GND
LB
CTRL
LATCH
INVERT
423 SET
CTRL
LATCH
INVERT
423 SET
LTC1343
LTC1343
CHARGE
CHARGE
PUMP
PUMP
D1
D2
D3
D4
D1
D2
D3
D4
R2
R2
R1
R3
R4
R1
R3
R4
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
38
37
36
35
34
33
32
31
30
29
28
27
26
21
19
18
17
39
24
U
+
+
V
+
+
V
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
LTC1344
M2
M1
LATCH
M0
21
14
24
11
15
12
17
16
19
20
23
10
13
26
25
22
18
21
2
9
3
7
1
4
8
6
5
LATCH
DB-26 CONNECTOR
LL A
TXD A
TXD B
SCTE A
SCTE B
TXC A
TXC B
RXC A
RXC B
RXD A
RXD B
TM A
RL A
RTS A
RTS B
DTR A
DTR B
DCD A
DCD B
DSR A
DSR B
CTS A
CTS B
RI A
SGND
SHIELD
DTE
TXC A
TXC B
TM A
RXD A
RXD B
RXC A
RXC B
SCTE A
SCTE B
TXD A
TXD B
LL A
RI A
CTS A
CTS B
DSR A
DSR B
DCD A
DCD B
DTR A
DTR B
RTS A
RTS B
RL A
1343 F38
DCE