描述 Description

The MT8880C is a monolithic DTMF transceiver with call progress filter. It is fabricated in Zarlink’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.

特性 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

簡介

MT8880C屬于集成電路（IC）的電信。由制造生產(chǎn)的MT8880C電信電信接口集成電路 (IC) 為通信網(wǎng)絡(luò)接口提供特定功能和控制，例如以太網(wǎng)切換、線路驅(qū)動器、ISDN、放大器、通道擴展器、數(shù)字鎖相環(huán)、DTMF、音頻發(fā)生器和解碼器、回聲消除、檢測器和發(fā)生器、DDA、電話線路監(jiān)控器和主叫號碼標識。