LTC1544 Просмотр технического описания (PDF) - Linear Technology
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LTC1544 Datasheet PDF : 20 Pages
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LTC1544
TYPICAL APPLICATIO S
RXD
RXC
TXC
SCTE
TXD
VCC
5V
3
28
C3
1µF
C1
1µF
C2
1
27
1µF
CHARGE
26
2
PUMP
4
25
C4
3.3µF
C5
1µF
LTC1543
24
5
D1
23
22
6
D2
21
7
D3
20
8
R1
19
18
9
R2
17
16
10
R3
15
11 M0
12 M1
13
M2
14
NC
DCE/DTE
C6 C7 C8
100pF 100pF 100pF
3 8 11 12 13
LTC1344A
14
VCC
C13
1µF
21
LATCH
2 VEE
C12
1µF
5 4 6 7 9 10
16 15 18 17 19 20 22 23 24 1
VCC
3
RXD A (104)
16
RXD B
17
RXC A (115)
9
RXC B
15
TXC A (114)
12
TXC B
24 SCTE A (113)
11
SCTE B
2 TXD A (103)
14 TXD B
7
SGND (102)
1 SHIELD (101)
C10
1µF
CTS
DSR
DCD
DTR
RTS
LL
M2
M1
M0
16
C9 VCC
1µF
1 VCC
2 VDD
28
VEE 27
GND
C11
1µF
26
3
D1
25
24
4
D2
23
5
D3
LTC1544
22
6
R1
21
20
7
R2
19
18
8
R3
17
10
16
R4
9
D4
11
15
M0
INVERT
NC
12
M1
13
M2
14
NC
DCE/DTE
Figure 23. Controller-Selectable DCE Port with DB-25 Connector
DB-25 FEMALE
CONNECTOR
5 CTS A (106)
13 CTS B
6
DSR A (107)
22
DSR B
8
DCD A (109)
10
DCD B
20
DTR A (108)
23
DTR B
4
RTS A (105)
19
RTS B
18
LL A (141)
1544 F23
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