Datasheet > MT8870DE

MT8870DE

更新时间： 2024-01-08 07:40:11

品牌	Logo	应用领域
MITEL		电信集成电路光电二极管
页数	文件大小	规格书
12页	218K
描述
ISO2-CMOS Integrated DTMF Receiver

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技术参数
数据手册

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MT8870DE 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	TSSOP,	Reach Compliance Code：	unknown
HTS代码：	8542.39.00.01	风险等级：	5.64
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e0
长度：	6.5 mm	功能数量：	1
端子数量：	20	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	认证状态：	Not Qualified
座面最大高度：	1.2 mm	标称供电电压：	5 V
表面贴装：	YES	电信集成电路类型：	DTMF SIGNALING CIRCUIT
温度等级：	INDUSTRIAL	端子面层：	TIN LEAD
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	宽度：	4.4 mm
Base Number Matches：	1

MT8870DE 数据手册

_{ISO -CMOS}MT8870D/MT8870D-1

Integrated DTMF Receiver

ISSUE 3

May1995

Features

•

Complete DTMF Receiver

Ordering Information

Low power consumption

Internal gain setting amplifier

Adjustable guard time

Central office quality

Power-down mode

MT8870DE/DE-1 18 Pin Plastic DIP

MT8870DC/DC-1 18 Pin Ceramic DIP

MT8870DS/DS-1 18 Pin SOIC

MT8870DN/DN-1 20 Pin SSOP

MT8870DT/DT-1 20 Pin TSSOP

-40 °C to +85 °C

Inhibit mode

Backward compatible with

MT8870C/MT8870C-1

Description

The MT8870D/MT8870D-1 is a complete DTMF

receiver integrating both the bandsplit filter and

digital decoder functions. The filter section uses

switched capacitor techniques for high and low

group filters; the decoder uses digital counting

techniques to detect and decode all 16 DTMF tone-

pairs into a 4-bit code. External component count is

minimized by on chip provision of a differential input

amplifier, clock oscillator and latched three-state bus

interface.

Applications

•

Receiver system for British Telecom (BT) or

CEPT Spec (MT8870D-1)

•

Paging systems

Repeater systems/mobile radio

Credit card systems

Remote control

Personal computers

Telephone answering machine

VDD

VSS

VRef

INH

Bias

Circuit

PWDN

VRef

Buffer

Chip Chip

Power Bias

High Group

Filter

Digital

Detection

Algorithm

Code

Converter

and Latch

IN +

Dial

Tone

Filter

Zero Crossing

Detectors

IN -

Low Group

Filter

to all

Steering

Logic

Chip

Clocks

OSC1

OSC2

St/GT

ESt

STD

TOE

Figure 1 - Functional Block Diagram

4-11

12 3 4 5 6 7...12

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与MT8870DE相关器件

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MT8870DE1	MICROSEMI	DTMF Signaling Circuit, CMOS, PDIP18, LEAD FREE, PLASTIC, MS-001AC, DIP-18	获取价格
MT8870DE1	ZARLINK	DTMF Signaling Circuit, CMOS, PDIP18, LEAD FREE, PLASTIC, MS-001AC, DIP-18	获取价格
MT8870DE-1	MITEL	ISO2-CMOS Integrated DTMF Receiver	获取价格
MT8870DE1-1	ZARLINK	DTMF Signaling Circuit, CMOS, PDIP18, LEAD FREE, PLASTIC, MS-001AC, DIP-18	获取价格
MT8870DN	MITEL	ISO2-CMOS Integrated DTMF Receiver	获取价格
MT8870DN1	ZARLINK	DTMF Signaling Circuit, CMOS, PDSO20, 5.30 MM, LEAD FREE, MO-150AE, SSOP-20	获取价格