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Número de pieza
componentes Descripción
MC145406P Ver la hoja de datos (PDF) - Motorola => Freescale
Número de pieza
componentes Descripción
Fabricante
MC145406P
Driver/Receiver EIA 232-E and CCITT V.28 (Formerly RS-232-D)
Motorola => Freescale
MC145406P Datasheet PDF : 12 Pages
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+ 5V
DTMF
INPUT
RDSI
20 k
Ω
20 k
Ω
TLA
CDSI RTLA**
6
0.1
µ
F
VDD
9
Xin
0.1
µ
F
1
DSI
17
TxA
MC145442/3
Xout
8
3
15
RxA2
CD
11
TxD
RTx
5
600
RxD
3.579
MHz
10 k
Ω
TIP
*
10
µ
F
+
600:600
16
RxA1
10 k
Ω
14
SQT
10 k
Ω
RING
VDD
0.1
µ
F
VDD BYPASS
18
ExI
CFB
10
FB
0.1
µ
F
19 VAG
2
LB
10 k
10 k
Ω
13
MODE
4
CDT
7
GND CDA
CCDA**
0.1
µ
F
0.1
µ
F
12
VSS BYPASS
CCDT
0.1
µ
F
0.1
µ
F
1
1
6
VDD VCC
MC145406
14
DI1
Tx1
3
15
DO1
Rx1
2
12
DI2
NC 13 DO2
Tx2
5
4
Rx2
10
DI3
NC11 DO3
Tx3 7 NC
6
Rx3
VSS GND
8
9
0.1
µ
F
*Line protection circuit
–5V
**Refer to the applications information for values of CCDA and RTLA
Figure 5. 5–V 300–Baud Modem with EIA 232–E Interface
8
2
3
EIA 232–E
DB–25
CONNECTOR
7
MOTOROLA
MC145406
7
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