MT8880C 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

부품명

상세내역

일치하는 목록

MT8880C

ISO²-CMOS Integrated DTMF Transceiver

Zarlink Semiconductor Inc 

ISO2-CMOS

MT8880C

Integrated DTMF Transceiver

Features

• Complete DTMF transmitter/receiver

• Central office quality

• Low power consumption

• Microprocessor port

• Adjustable guard time

• Automatic tone burst mode

• Call progress mode

Applications

• Credit card systems

• Paging systems

• Repeater systems/mobile radio

• Interconnect dialers

• Personal computers

Description

DS5431

ISSUE 7

March 2001

Ordering Information

MT8880CE

20 Pin Plastic DIP

MT8880CS

20 Pin SOIC

MT8880CN

24 Pin SSOP

MT8880CP

28 Pin Plastic LCC

-40°C to +85°C

ZarlinkZarlinkZarlink’s ISO2-CMOS technology,

which provides low power dissipation and high

reliability. The DTMF receiver is based upon the

industry standard MT8870 monolithic DTMF

receiver; the transmitter utilizes a 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. A

standard microprocessor bus is provided and is

directly compatible with 6800 series

microprocessors.

The MT8880C is a monolithic DTMF transceiver with

call progress filter. It is fabricated in

TONE

∑

D/A

Converters

IN+

IN-

GS

OSC1

OSC2

Tone Burst

Gating Cct.

+

Dial

-

Tone

Filter

Oscillator

Circuit

Bias

Circuit

Control

Logic

High Group

Filter

Low Group

Filter

Control

Logic

Row and

Column

Counters

Digital

Algorithm

and Code

Converter

Steering

Logic

Transmit Data

Register

Status

Register

Control

Register

A

Control

Register

B

Receive Data

Register

VDD VRef VSS

ESt

St/GT

Figure 1 - Functional Block Diagram

Data

Bus

Buffer

Interrupt

Logic

I/O

Control

D0

D1

D2

D3

IRQ/CP

Φ2

CS

R/W

RS0

1

Share Link: