L3924AD中文资料PDF规格书
L3924AD规格书详情
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
产品属性
- 型号:
L3924AD
- 制造商:
STMICROELECTRONICS
- 制造商全称:
STMicroelectronics
- 功能描述:
SPEECH AND 14 MEMORY DIALER WITH HOLD FUNCTION
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI/德州仪器 |
23+ |
NA/ |
3655 |
原装现货,当天可交货,原型号开票 |
询价 | ||
TI |
23+ |
SSOP8 |
20000 |
全新原装假一赔十 |
询价 | ||
TI |
2020+ |
SOP |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
TI |
21+ |
35200 |
一级代理/放心采购 |
询价 | |||
ST |
95+ |
DIP |
2000 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
CAN |
23+ |
NA |
15659 |
振宏微专业只做正品,假一罚百! |
询价 | ||
TI/德州仪器 |
1922+ |
TSOP8 |
6852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
LM |
SOP |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
TI |
23+ |
标准封装 |
18000 |
询价 | |||
TI |
00+ |
SOIC-8 |
3 |
原装现货海量库存欢迎咨询 |
询价 |