位置:L3924A > L3924A详情

L3924A中文资料

厂家型号

L3924A

文件大小

188.63Kbytes

页面数量

15

功能描述

SPEECH AND 14 MEMORY DIALER WITH HOLD FUNCTION

数据手册

下载地址一下载地址二到原厂下载

生产厂商

STMICROELECTRONICS

L3924A数据手册规格书PDF详情

DESCRIPTION

The device consists of the speech and the dialer. It provides the DC line interface circuit that terminates the telephone line, analog amplifier for speech transmission and necessary signals for either DTMF or loop disconnect (pulse) dialing.

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 CURRENT FOR EXTERNAL CIRCUITRY

■ SYMMETRICAL HIGH IMPEDANCE MICROPHONE INPUTS SUITABLE FOR DYNAMIC ELECTRET OR PIEZOELECTRIC TRANSDUCER

■ ASYMMETRICAL EARPHONE OUTPUT SUITABLE FOR DYNAMIC TRANSDUCER

■ LINE LOSS COMPENSATION

■ INTERNAL MUTING TO DISABLE SPEECH DURING DIALING

■ HOLD FUNCTION FOR PARALLEL PHONE WITH 400ms DELAY TO PREVENT FALSE RELEASE

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 INDICATION OF VALID KEY PRESSED IN A BUZZER OR/AND IN THE EARPHONE

■ TIMED PABX PAUSE

■ FLASH INITIATES TIMED BREAK: MASK OPTIONS WITH 585ms,300ms,100ms

■ CONTINUOUS TONE FOR EACH DIGIT UNTIL KEY RELEASE

■ USES INEXPENSIVE 3.579545MHz CERAMIC RESONATOR

■ POWERED FROM TELEPHONE LINE, LOW OPERATING VOLTAGE FOR LONG LOOP APPLICATION

L3924A产品属性

  • 类型

    描述

  • 型号

    L3924A

  • 制造商

    STMICROELECTRONICS

  • 制造商全称

    STMicroelectronics

  • 功能描述

    SPEECH AND 14 MEMORY DIALER WITH HOLD FUNCTION

更新时间:2025-10-18 10:32:00
供应商 型号 品牌 批号 封装 库存 备注 价格
STM
09+
SOP-28
4411
只售全新原装货真实实数现货放心
ST
10+
SOP-28
7800
全新原装正品,现货销售
STM
24+
SOP-28
210
ST
25+
SOP
3200
绝对原装自家现货!真实库存!欢迎来电!
ST
22+
SOP28
5000
原装现货库存.价格优势!!
ST
25+
SOP28
2987
只售原装自家现货!诚信经营!欢迎来电!
ST/意法
23+
SOP28
50000
全新原装正品现货,支持订货
ST
00+
SOP28
4693
一级代理,专注军工、汽车、医疗、工业、新能源、电力
ST
23+
SOP28
7193
原厂原装正品
ST/意法
24+
NA/
3411
原装现货,当天可交货,原型号开票