Datasheet > LC737212M

LC737212M

更新时间： 2024-11-12 22:47:15

品牌	Logo	应用领域
三洋 - SANYO		晶体存储电信集成电路光电二极管电话拨号器
页数	文件大小	规格书
27页	305K
描述
Telephone Dialer IC with On-Chip Memory for Push- Button Telephones

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LC737212M 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	DFP	包装说明：	SSOP, SOP36,.4,32
针数：	36	Reach Compliance Code：	unknown
HTS代码：	8542.39.00.01	风险等级：	5.92
Is Samacsys：	N	其他特性：	1:1.5 MAKE/BREAK RATIO IS ALSO SELECTABLE
晶体频率：	3.58 MHz	JESD-30 代码：	R-PDSO-G36
JESD-609代码：	e0	长度：	15.3 mm
破损率：	1:2	功能数量：	1
端子数量：	36	最高工作温度：	70 °C
最低工作温度：	-30 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装等效代码：	SOP36,.4,32
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	1.5/5.5 V
认证状态：	Not Qualified	座面最大高度：	2.5 mm
子类别：	Telephone Circuits	最大压摆率：	0.001 mA
标称供电电压：	3 V	表面贴装：	YES
技术：	CMOS	电信集成电路类型：	TELEPHONE DIALER CIRCUIT
温度等级：	OTHER	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.8 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.9 mm	Base Number Matches：	1

LC737212M 数据手册

Ordering number : EN5203203

CMOS LSI

LC737212, LC737212M

Telephone Dialer IC with On-Chip Memory for Push-

Button Telephones

• Automatic pause (1.0 second) insertion after a flash

operation.

• Mode changing is one-directional, from pulse mode to

tone mode.

• Output of a key press tone (1036 Hz, 31 ms) for keys

other than DTMF keys when key input is valid

• Output of an operation complete confirmation tone

(2072 Hz, 279 ms for each telephone number) when a

telephone number is stored in memory

Overview

The LC737212 and LC737212M are CMOS LSI

telephone dialers for pushbutton telephones. They support

both DTMF and pulse dialing. These products include 25

16-digit memories for storing telephone numbers and one

63-digit memory for redialing, and they provide, in a

single chip, all the functions required for dialing and

control for a standard independent telephone, including

on-hook dialing and a hold function. They also provide a

serial I/O interface for connection to a microcontroller.

• Generates 12 signal types in DTMF mode.

• Supports an on-hook dialing mode.

• Supports a hold function with hold mode.

• Supports both 10 and 20 pps dialing pulse rates.

• The mode can be switched from either the P/T pin or by

a key input.

• Settable dialing pulse circuit closed ratio (make

percent): either 33% or 39%.

• Supports either keypad or serial input.

• Provides serial output of the keypad input data and the

internal status.

• Capable of controlling the serial output timing.

• Supports 18 user-defined keys.

Functions

• Fabrication in a CMOS process that allows these circuits

to be directly operated from a telephone line

• Support for single-contact keypads

• Built-in oscillator circuit (fosc = 3.58 MHz) that can

drive either a standard color-TV crystal oscillator

element or a ceramic resonator

• High-precision DTMF signal

• Frequency generator circuit (±0.1%) adopted for eased

ceramic resonator selection

• Five one-touch 16-digit auto-dial memories and 20

quick-dialing memories

• On-hook or off-hook can be specified for memory

entries.

• Mode change and pause data items can be stored in the

dialing memories.

• 63-digit redial memory

• Wide operating power-supply voltage range

— Pulse mode: V = 1.5 to 5.5 V

— DTMF mode: V = 2.0 to 5.5 V

• Low power operation

— Pulse mode: I = 0.5 mA max (V = 3.0 V)

— DTMF mode: I = 1.0 mA max (V = 3.0 V)

• Low standby current

— I = 0.5 µA max (V = 1.0 V)

• Automatic pause (3.9 seconds) insertion when the mode

is switched.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

21398RM(OT) No. 5203-1/27

12 3 4 5 6 7...27

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