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Home >
31002A Datasheet
 
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
 
 

 
TYPICAL APPLICATION CIRCUIT

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