Datasheet > MT88L85AN

MT88L85AN

更新时间： 2024-10-31 22:24:55

品牌	Logo	应用领域
MITEL		/
页数	文件大小	规格书
20页	354K
描述
3V 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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MT88L85AN 数据手册

MT88L85

3V Integrated DTMF Transceiver

with Power Down & Adaptive

Advance Information

Micro Interface

ISSUE 1

May 1995

Features

•

External power down pin

Ordering Information

MT88L85AE 24 Pin Plastic DIP

Low voltage operation (2.7V - 3.6V)

Central office quality DTMF transmitter/

receiver

MT88L85AN

MT88L85AP

24 Pin SSOP

28 Pin PLCC

•

Low power consumption

-40°C to +85°C

High speed adaptive micro interface

Adjustable guard time

The receiver section is based upon the industry

standard MT8870 DTMF receiver while the

Automatic tone burst mode

Call progress tone detection to -30dBm

transmitter utilizes

switched capacitor D/A

DTMF transmitter/receiver power down via

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

The MT88L85 utilizes an adaptive micro interface,

which allows the device to be connected to a number

of popular microcontrollers with minimal external

logic. The MT88L85 provides enhanced power down

Repeater systems/mobile radio

Interconnect dialers

Personal computers

features.

The transmitter and receiver may

independently be powered down via register

control. A full chip power down pin provides simple

power and control capability.

Description

The MT88L85 is a monolithic DTMF transceiver with

call progress filter.

It is fabricated in CMOS

technology offering low power consumption and high

reliability.

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

4-71

12 3 4 5 6 7...20

中文翻译

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与MT88L85AN相关器件

型号	品牌	获取价格	描述	数据表
MT88L85AN1	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, LEAD FREE, MO-150AG, SSOP-24
MT88L85AN1	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, LEAD FREE, MO-150AG, SSOP-24
MT88L85ANR	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PDSO24,
MT88L85ANR	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, PDSO24, 5.30 MM, MO-150AG, SSOP-24
MT88L85AP	MITEL	获取价格	3V Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface
MT88L85AP	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, PQCC28,
MT88L89	MITEL	获取价格	3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AC	MITEL	获取价格	3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AE	MITEL	获取价格	3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AN	MITEL	获取价格	3V Integrated DTMFTransceiver with Adaptive Micro Interface

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