31002A Datasheet | Unisonic Technologies

.. UTC 31002A LINEAR INTEGRATED CIRCUIT TELEPHONE TONE RINGER DESCRIPTION The UTC 31002A is a bipolar integrated circuit designed for telephone bell replacement. It can also be used as alarms or other alerting devices. Features - Designed for telephone bell replacement. - Low current drain for multiple extension of lines. - Adjustable 2-frequency tone. - Adjustable warbling rate. - Built-in hysteresis prevents false triggering and rotary dial 'CHIRPS'. - Programmable for initiation current by simple external resistor SOP-8 DIP-8 PIN CONFIGURATIONS Vcc RSL Low Freq. Time Constant Low Freq. Time Costant 1 2 3 4 . 7 6 5 Output High Freq. Time Constant...