L3916A

更新时间： 2024-01-05 09:05:33

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动器
页数	文件大小	规格书
14页	126K
描述
SPEECH AND 14 MEMORY DIALER WITH LED DRIVER

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中文翻译

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数据手册

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L3916A 数据手册

L3916A

SPEECH AND 14 MEMORY DIALER WITH LED DRIVER

SPEECH CIRCUIT

2 TO 4 WIRES CONVERSION

PRESENT THE PROPER DC PATH FOR THE

LINE CURRENT AND THE FLEXIBILITY TO

ADJUST IT AND ALLOW PARALLEL PHONE

OPERATION

PROVIDES SUPPLY WITH LIMITED CUR-

RENT FOR EXTERNAL CIRCUITRY

SYMMETRICAL HIGH IMPEDANCE MICRO-

PHONE INPUTS SUITABLE FOR DYNAMIC

SO28

ORDERING NUMBER: L3916AD

ELECTRET

PIEZOELECTRIC

TRANSDUCER

ASYMMETRICAL

SUITABLE FOR DYNAMIC TRANSDUCER

LINE LOSS COMPENSATION

EARPHONE OUTPUT

PIN CONNECTION

(Top view)

INTERNAL MUTING TO DISABLE SPEECH

DURING DIALING

LIGHTED DIAL LED CONSUMING 25% OF

LINE CURRENT

DIALER CIRCUIT

32 DIGITS FOR LAST NUMBER REDIAL

BUFFER

18 DIGITS FOR 13 MEMORY REDIAL

ALLOW MIXED MODE DIALING IN EITHER

TONE OR PULSE MODE

PACIFIER TONE PROVIDES AUDIBLE INDI-

CATION OF VALID KEY PRESSED IN A

BUZZER OR/AND IN THE EARPHONE

TIMED PABX PAUSE

FLASHINITIATES TIMED BREAK: 585ms.

CONTINUOUS TONE FOR EACH DIGIT UN-

TIL KEY RELEASE

KEYPAD CONFIGURATION

USES INEXPENSIVE 3.579545MHz CE-

RAMIC RESONATOR

POWERED FROM TELEPHONE LINE, LOW

OPERATING VOLTAGE FOR LONG LOOP

APPLICATION

DESCRIPTION

The device consists of the speech and the dialer.

It provides the DC line interface circuit that termi-

nates the telephone line, analog amplifier for

speech transmission and necessary signals for

either DTMF or loop disconnect(pulse) dialing.

Note: PAUSE/LND:

PAUSE and LND functions are sharing the same key with different

sequence. Hereafter, PAUSEandLND keysarereferring tothe same

key.

March 2000

1/14

12 3 4 5 6 7...14

中文翻译

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