器件名称: M-8888-01T
功能描述: DTMF Transceiver
文件大小: 451.99KB 共14页
简 介:M-8888
DTMF Transceiver
Features CMOS technology for low power con Advanced sumption and increased noise immunity DTMF transmitter/receiver in a single Complete chip Standard 8051, 8086/8 microprocessor port Central office quality and performance Adjustable guard time Automatic tone burst mode Call progress mode Single +5 Volt power supply 20-pin DIP and SOIC packages 2 MHz microprocessor port operation Inexpensive 3.58 MHz crystal Applications Paging systems Repeater systems/mobile radio Interconnect dialers PBX systems Computer systems Fax machines Pay telephone Credit card verification Description The M-8888 is a complete DTMF Transmitter Receiver that features adjustable guard time, automatic tone burst mode, call progress mode, and a fully compatible 8051, 8086/8 microprocessor interface. The receiver portion is based on the industry standard M-8870 DTMF Receiver, while the transmitter uses a switched-capacitor digital-to-analog converter for lowdistortion, highly accurate DTMF signaling. Tone bursts can be transmitted with precise timing by making use of the automatic tone burst mode. To analyze call progress tones, a call progress filter can be selected by an external microprocessor.
Ordering Information Part # Description
M-8888-01P M-8888-01SM M-8888-01T 20-pin plastic DIP 20-pin plastic SOIC 20-pin plastic SOIC,Tape and Reel
Pin Connections
Block Diagram
DS-M8888-R1
www.clare.com
1
M-8888
Single-Ended Input Configuration Differential Input ……
