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參數資料
| 型號： | PCD4440T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Analog voice scrambler/descrambler |
| 中文描述： | TELECOM, CORDLESS, SCRAMBLER/DESCRAMBLER, PDSO8 |
| 封裝： | 7.50 MM, PLASTIC, SOT-176-1, SOP-8 |
| 文件頁數： | 14/20頁 |
| 文件大小： | 105K |
| 代理商： | PCD4440T |
1996 Dec 20
14
Philips Semiconductors
Product specification
Analog voice scrambler/descrambler
PCD4440T
10 HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, it is good practice to take
normal precautions appropriate to handling MOS devices (see “Handbook IC03, Section General, Handling MOS
devices”).
Fig.13 CT0 base unit with direct (Manchester code) data system.
handbook, full pagewidth
MGG734
RF
SECTION
MICROCONTROLLER
PCD33xxA
A/D CONVERTER
DESCRAMBLER
PCD4440T
LINE INTERFACE
TEA106x
EXPANDOR
1/2 NE577
SCRAMBLER
PCD4440T
COMPRESSOR
1/2 NE577
DETECTOR
CHARGING
CIRCUIT
DTMF
data in
data out
mod
TX
RX
I
2
C-bus
RSSI
power down RX
power down TX
telephone
line
VREF
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