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LTC1344 Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LTC1344
Software-Selectable Cable Terminator
Linear Technology
LTC1344 Datasheet PDF : 12 Pages
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LTC1344
TYPICAL APPLICATIONS
N
Controller Selectable Multiprotocol DTE Port with DB-25 Connector
C6 C7 C8
100pF 100pF 100pF
DTE_LL/DCE_TM
DTE_TXD/DCE_RXD
DTE_SCT/DEC_RXC
DTE_TXC/DCE_TXC
DTE_RXC/DCE_SCTE
DTE_RXD/DCE_TXD
DTE_TM/DCE_LL
DTE_RL/DCE_RL
DTE_RTS/DCE_CTS
DTE_DTR/DCE_DSR
DTE_DCD/DCE_DCD
DTE_DSR/DCE_DTR
DTE_CTS/DCE_RTS
LATCH
10
LB
DCE/DTE
M2
M1
M0
V
CC
5V
C3
1
µ
F
C1
1
µ
F
C5
1
µ
F
R1
100k
1
44
2
43
4
42
CHARGE
3
PUMP
8
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
16
R4
20
22
CTRL
LATCH
11
INVERT
25
423 SET
26
21
DCE
19
M2
18
M1
17
M0
40
23
GND
LB
24
EC
14
V
CC
C2
1
µ
F
2
C4
V
EE
3.3
µ
F
V
CC
3
8
11 12 13
LTC1344
21
LATCH
DCE/
DTE M2 M1 M0
5 4 6 7 9 10 16 15 18 17 19 20 22 23 24 1
DB-25 CONNECTOR
18
DTE
LL A
2
TXD A
14
TXD B
24
SCTE A
11
SCTE B
DCE
TM A
RXD A
RXD B
RXC A
RXC B
15
TXC A
12
TXC B
17
RXC A
9
RXC B
3
RXD A
16
RXD B
25
TM A
TXC A
TXC B
SCTE A
SCTE B
TXD A
TXD B
LL A
7
SGND
C11
1
µ
F
C9
1
µ
F
V
CC
C12
1
µ
F
V
CC
R2
100k
1
44
2
43
4
42
CHARGE
3
PUMP
8
41
LTC1343
5
D1
39
38
6
D2
37
36
7
D3
35
34
9
D4
33
10
12
32
13
R1
31
30
14
R2
29
28
15
R3
27
16
R4
20
CTRL
22
11
LATCH
25
INVERT
423 SET
26
DCE
21
M2
19
M1
18
M0
17
40
23
GND
LB
24
EC
C10
1
µ
F
C13
3.3
µ
F
1
SHIELD
21
RL A
4
RTS A
19
RTS B
20
DTR A
23
DTR B
RL A
CTS A
CTS B
DSR A
DSR B
8
DCD A
10
6
DCD B
22
DSR A
DSR B
5
CTS A
13
CTS B
DCD A
DCD B
DTR A
DTR B
RTS A
RTS B
1344 TA02
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