LTC1343 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1343' PDF : 28 Pages View PDF
LTC1343
APPLICATIONS INFORMATION
C6 C7 C8
100pF 100pF 100pF
LL
TXD
SCTE
TXC
RXC
RXD
TM
RL
RTS
DTR
DCD
DSR
CTS
LATCH
LB
M2
M1
M0
VCC
5V
+ C3
1µF
C1 +
1
2
1µF
4
3
+
C5
8
1µF
44
43
42
CHARGE
PUMP
41
LTC1343
5
39
D1
38
6
D2
37
36
7
D3
35
34
9
D4
33
10
12
13
32
R1
31
14
30
R2
29
28
15
R3
27
14
VCC
C2
1µF
2
C4
VEE
3.3µF
16
R4
26
20
21
22 CTRL
LATCH
11 INVERT
25
423 SET
R1
DCE
19
M2
18
M1
17
M0
100k 40
23 GND
LB
24
EC
VCC
+
1
C11
1µF C9 +
1µF
2
4
3
VCC + C12
8
1µF
5
6
7
9
10
12
13
14
15
44
43
42
CHARGE
PUMP
41
LTC1343
D1
39
38
D2
37
36
D3
35
34
D4
33
32
R1
31
30
R2
29
28
R3
27
16
R4
26
20
VCC
CTRL
22
11 LATCH
INVERT
25
423 SET
R2
100k 40
21
DCE
19
M2
18
M1 17
M0
24
EC
23 GND
LB
C10
1µF
C13
3.3µF
3
8
11 12 13
LTC1344
21
LATCH
LATCH
DCE/
DTE M2 M1 M0
5 4 6 7 9 10 16 15 18 17 19 20 22 23 24 1
DB-25 MALE
CONNECTOR
18 LL A (141)
2 TXD A (103)
14 TXD B
24 SCTE A (113)
11 SCTE B
15 TXC A (114)
12 TXC B
17 RXC A (115)
9 RXC B
3 RXD A (104)
16 RXD B
25 TM A (142)
7
SGND (102)
1
SHIELD (101)
21
RL A (140)
4 RTS A (105)
19 RTS B
20 DTR A (108)
23 DTR B
8 DCD A (109)
10 DCD B
6
22 DSR A (107)
DSR B
5 CTS A (106)
13 CTS B
1343 F31
Figure 31: Controller-Selectable Multiprotocol DTE Port with DB-25 Connector
19
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