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M3541D PDF预览

M3541D

更新时间: 2024-01-31 07:14:00
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 电信光电二极管电信集成电路
页数 文件大小 规格书
12页 167K
描述
TELEPHONE DIALER CKT, PDSO20, SO-20

M3541D 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:20
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.83其他特性:SELECTABLE MAKE BREAK RATIO 1:2
JESD-30 代码:R-PDSO-G20长度:12.8 mm
破损率:1:1.5功能数量:1
端子数量:20最高工作温度:55 °C
最低工作温度:-10 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
座面最大高度:2.65 mm最大压摆率:1 mA
标称供电电压:2.5 V表面贴装:YES
电信集成电路类型:TELEPHONE DIALER CIRCUIT温度等级:COMMERCIAL
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL宽度:7.5 mm
Base Number Matches:1

M3541D 数据手册

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M3541  
SINGLE NUMBER PULSE TONE SWITCHABLE DIALER  
PRELIMINARY DATA  
.
.
.
.
.
SELECTABLE LOOP DISCONNECT OR DTMF  
DIALLING MODES  
ALLOWS USER TO SWITCH FROM LD TO  
DTMF DIALLINGDURING A CALL  
LNR FACILITY ALLOWS UP TO 31 DIGITS TO  
BE RETAINED FOR REDIALLING  
SELECTABLE MAKE/BREAK RATIOS 2:1 AND  
3:2  
SELECTABLE INTERDIGIT PAUSE 500ms OR  
800ms  
USES INEXPENSIVE 560KHz RESONATOR  
TIMED BREAK RECALL (timed flash)  
OPERATES WITH INEXPENSIVE SINGLE  
CONTACT KEYPAD  
CAPABLE OF BATTERY-LESS OPERATION.  
LOW POWER CMOS PROCESS ALLOWS DI-  
RECT OPERATION FROM TELEPHONE  
LINES  
.
.
.
DIP20  
SO20  
ORDERING NUMBERS :  
M3541B/1  
.
M3541D  
PIN CONNECTION (Top view)  
DESCRIPTION  
The M3541 is a keypad switchable LD/DTMF dialer  
devices designed for use in low cost, dual dialing  
mode telephoneinstruments. It is suitable for send-  
ing telephone numbers without limit and an on-chip  
memory allows numbers of up 31 digits to be re-  
tained for redialling later. The low power CMOS de-  
sign allows the number in the memory to be main-  
tained indefinitely (until overwritten) by a minimal  
current leaked from the telephoneline. A particular  
feature of this device is the facility for the user to  
switch dialling mode from LD to DTMF via the key-  
pad during the course of a call. This is intended for  
uses such as home banking, access to long dis-  
tancetrunk service, credit cardverificatios andother  
applications which require data to be sent at low  
speed once a connection has been established.  
1/12  
July 1993  

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