描述 Description

The MT8888C is a monolithic DTMF transceiver with call progress filter. It is fabricated in CMOS technology offering low power consumption and high reliability.
The receiver section is based upon the industry standard MT8870 DTMF receiver while 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.

特性 Features

? Central office quality DTMF transmitter/receiver
? Low power consumption
? High speed Intel micro interface
? Adjustable guard time
? Automatic tone burst mode
? Call progress tone detection to -30 dBm

Applications
? Credit card systems
? Paging systems
? Repeater systems/mobile radio
? Interconnect dialers
? Personal computers

簡介

MT8888C屬于集成電路（IC）的電信。由制造生產的MT8888C電信電信接口集成電路 (IC) 為通信網(wǎng)絡接口提供特定功能和控制，例如以太網(wǎng)切換、線路驅動器、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。