Datasheet > MT8885AN

MT8885AN

更新时间： 2024-09-24 22:38:35

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
20页	353K
描述
Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface

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中文翻译

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数据手册

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MT8885AN 数据手册

MT8885

Integrated DTMF Transceiver

with Power Down & Adaptive

Micro Interface

Advance Information

ISSUE 1

May 1995

Features

•

External power down pin

Ordering Information

MT8885AE 24 Pin Plastic DIP

•

Central office quality DTMF transmitter/

receiver

MT8885AN

MT8885AP

24 Pin SSOP

28 Pin PLCC

•

Low power consumption

High speed adaptive micro interface

Adjustable guard time

-40°C to +85°C

Automatic tone burst mode

The receiver section is based upon the industry

standard MT8870 DTMF receiver while the

Call progress tone detection to -30dBm

DTMF transmitter/receiver power down via

transmitter utilizes

switched capacitor D/A

converter for low distortion, high accuracy DTMF

signalling. Internal counters provide a burst mode

such that tone bursts can be transmitted with precise

timing. A call progress filter can be selected allowing

a microprocessor to analyze call progress tones.

Applications

•

Credit card systems

Paging systems

Repeater systems/mobile radio

Interconnect dialers

Personal computers

The MT8885 utilizes an adaptive micro interface,

which allows the device to be connected to a number

of popular microcontrollers with minimal external

logic. The MT8885 provides enhanced power down

features.

The transmitter and receiver may

Description

The MT8885 is a monolithic DTMF transceiver with

call progress filter.

technology offering low power consumption and high

reliability.

independently be powered down via register

control. A full chip power down pin provides simple

power and control capability.

It is fabricated in CMOS

Data

Row and

D/A

Transmit Data

Bus

∑

Column

TONE

Converters

Buffer

Counters

Status

Interrupt

Logic

Tone Burst

Gating Cct.

Control

Logic

IRQ/CP

Control

IN+

IN-

Dial

Tone

Filter

High Group

Filter

Digital

DS/RD

Algorithm

and Code

Converter

Control

I/O

Low Group

Filter

Control

OSC1

OSC2

Oscillator

Circuit

R/W/WR

RS0

Control

Logic

Receive Data

Steering

Logic

Bias

Circuit

V_DDV_RefV_SS

ESt

St/GT

PWDN

Figure 1 - Functional Block Diagram

4-51

12 3 4 5 6 7...20

中文翻译

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与MT8885AN相关器件

型号	品牌	获取价格	描述	数据表
MT8885AN1	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, LEAD FREE, MO-150AG, SSOP-24
MT8885ANR	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PDSO24,
MT8885ANR	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, MO-150AG, SSOP-24
MT8885ANR1	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, LEAD FREE, MO-150AG, SSOP-24
MT8885ANR1	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, LEAD FREE, MO-150AG, SSOP-24
MT8885AP	MITEL	获取价格	Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface
MT8885E	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PDIP24,
MT8885E	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, PDIP24,
MT8888	MITEL	获取价格	Integrated DTMFTransceiver with Intel Micro Interface
MT8888C	MITEL	获取价格	Integrated DTMFTransceiver with Intel Micro Interface

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