TP53130

The TP53130 is designed as a low threshold voltage,ion-implanted,metal-gate CMOS integrated circuit that generates all dual tone multi-frequency(DTMF) pairs required in tonedialing systems.The 8 audio output frequencies are generated from an on-chip 3.579545 MHz master oscillator.No external components other than the srystal are required for the oscillator.The TP53130 can be powered directly from telephone lines over wide range loop conditions.The device can interface directly to an inexpensive single-contact calculator type keyboard or a standard telephone 2-of-8 keypad.The TP53130 is also capable of accepting binary code inputs for microprocessor-comtrolled systems applications.

Features of the TP53130 are as follows:(1)3V-15V operating voltage;(2)on-chip 3.579545 MHz crystal-controlled oscillator;(3)tone accuracy better than +/-1% without tuning;(4)interface with standard 2-of-8 telephone keypad;(5)interface with single-contact low cost keypad;(6)input signals can be in binary code;(7)nulti-key lockout with/without single tone capability;(8)in-chip high band and low band tone generators and mixer;(9)high band pre-emphasis;(10)low harmonic distortion;(11)open emitter-follower low impedance output;(12)separate receiver mute and transmitter mute switch outputs;(13)powered directly from the telephone line.

The absolute maximum ratings of the TP53130 can be summarized as:(1)voltage at any pin except XMT SW and MUTE:Vss-0.3V to Vdd+0.3V;(2)voltage at XMT SW and MUTE pins:Vss-0.3V to 15V;(3)operating temperature range:-40 to +70;(4)storage temperature range:-65 to +150;(5)Vdd-Vss:15 V;(6)lead temperature(soldering,10 seconds):300.If you want to know more information such as the electrical characteristics about TP53130,please download the datasheet in www.seekic.com and www.chinaicmart.com .