mxl1544 Maxim Integrated Products, Inc., mxl1544 Datasheet - Page 17

• Manufacturer Part Number: mxl1544
• Description: +5v, Multiprotocol, Software-selectable Control Transceivers
• Manufacturer: Maxim Integrated Products, Inc.

Figure 17. Controller-Selectable DCE Port with DB-25 Connector
C10
1µF
INVERT
SCTE
DCD
RXD
RXC
DSR
TXC
TXD
CTS
DTR
RTS
M2
M1
M0
LL
______________________________________________________________________________________
+5V Multiprotocol, Software-Selectable
C3
4.7µF
1µF
V
C9
5V
CC
1µF
C1
C4
1µF
V
CC
NC
NC
10
11
12
13
14
10
11
12
13
14
3
1
2
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
DCE/DTE
M0
M1
M2
DCE/DTE
V
V
M0
M1
M2
CC
DD
MXL1544
MAX3175
MXL1543
CHARGE
D1
D2
D3
D1
D2
D3
D4
PUMP
R3
R3
R4
R1
R2
R1
R2
INVERT
GND
V
EE
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C2
1µF
C5
4.7µF
C13
1µF
C11
1µF
14
C12
1µF
2
V
V
CC
EE
100pF
C6
5
3
4
100pF
C7
6 7
8
100pF
Control Transceivers
C8
11
9 10 16 15 18 17 19 20 22 23 24 1
12 13
V
CC
MXL1344A
LATCH
21
16
17
15
12
24
11
14
13
22
10
20
23
19
18
3
9
2
7
1
5
6
8
4
TXD A (103)
RXD A (104)
RXD B
RXC A (115)
RXC B
TXC A (114)
TXC B
SCTE A (113)
SCTE B
TXD B
SGND (102)
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
LL A (141)
SHIELD (101)
CONNECTOR
FEMALE
DB-25
17