MC145406P View Datasheet(PDF) - LANSDALE Semiconductor Inc.
Part Name
Description
Manufacturer
MC145406P Datasheet PDF : 10 Pages
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ML145406
LANSDALE Semiconductor, Inc.
+ 5V
DTMF
INPUT
RDSI
20 kΩ
20 kΩ
TLA
CDSI RTLA**
6
0.1 µF
VDD
Xin 9
0.1 µF
1 DSI
17 TxA
ML145442/3
Xout 8
3
15 RxA2
CD
11
TxD
RTx
5
600
RxD
3.579
MHz
10 kΩ
TIP
*
10 µF +
600:600
16 RxA1
10 kΩ
14
SQT
10 kΩ
RING
VDD
0.1 µF
VDD BYPASS
18 ExI
CFB
10
FB
0.1 µF 19 VAG
2
LB
10 k
10 kΩ
13
MODE
4
CDT
7
GND CDA
CCDA**
0.1 µF
0.1 µF
12
VSS BYPASS
CCDT
0.1 µF
0.1 µF
1
16
VDD VCC
ML145406
14
DI1
Tx1 3
15 DO1
Rx1 2
12
DI2
NC 13 DO2
Tx2 5
4
Rx2
10
DI3
Tx3 7 NC
NC11 DO3
Rx3 6
VSS GND
8
9
0.1 µF
*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
Page 7 of 10
www.lansdale.com
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