mc145443dw Freescale Semiconductor, Inc, mc145443dw Datasheet - Page 10

• Manufacturer Part Number: mc145443dw
• Description: Single-chip 300-baud Modem
• Manufacturer: Freescale Semiconductor, Inc

MC145442 MC145443
10
RING
* Line Protection Circuit
TIP
INPUT
DTMF
10
0.1 F
0.1 F
20 k
R DSI
*
V DD
10 F
0.1 F
C DSI
+
600
0.1 F
C FB
R Tx
R TLA
Figure 7. Typical MC145442/MC145443 Applications Circuit
0.1 F
C CDT
20
17
15
16
18
10
19
1
TLA
DSI
TxA
RxA2
RxA1
Exl
FB
V AG
CDT
4
0.1 F
MC145442/3
12
V DD
GND
6
MODE
7
CDA
X out
SQT
RxD
TxD
X in
CD
LB
C CDA
0.1 F
9
8
10 k
10 k
10 k
3.58
MHz
0.1 F
11
15
13
1
3
C1+
C1–
DI2
DO1
DI1
TxEN
STBY
2
GND
V DD
MC145407
17
4
V CC
V SS
19
C1+
C1–
Rx1
Rx2
Rx3
Tx2
Tx1
0.1 F
20
18
10
6
8
7
9
MMBZ15VDLT1 X 3
MOTOROLA
CONNECTOR
EIA–232–D
DB–25
+ 5 V
8
2
3
7