MT8888C数据手册集成电路（IC）的电信规格书PDF

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

简介

MT8888C属于集成电路（IC）的电信。由制造生产的MT8888C电信电信接口集成电路 (IC) 为通信网络接口提供特定功能和控制，例如以太网切换、线路驱动器、ISDN、放大器、通道扩展器、数字锁相环、DTMF、音频发生器和解码器、回声消除、检测器和发生器、DDA、电话线路监控器和主叫号码标识。