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.
SOP-8
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
DIP-8
PIN CONFIGURATIONS
Vcc
Output
1
2
3
4
8
7
6
5
High Freq.
Time Constant
RSL
Low Freq.
Time Constant
High Freq.
Time Constant
Low Freq.
Time Costant
GND
ABSOLUTE MAXIMUM RATINGS(Ta=25°C )
PARAMETER
Supply Voltage
SYMBOL
Vcc
VALUE
30
UNIT
V
Power Dissipation
Operating Temperature
Storage Temperature
Pd
Topr
Tstg
400
-45 to 85
-65 to 150
mW
°C
°C
1
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R108-005,A
UTC [ Unisonic Technologies ]
