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UTCTA31002

Telephone tone ringer

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

1

RSL

2

Low Freq.

Time Constant 3

Low Freq.

4

Time Costant

8 Output

7

High Freq.

Time Constant

6 High Freq.

Time Constant

5 GND

ABSOLUTE MAXIMUM RATINGS(Ta=25°C )

PARAMETER

SYMBOL

Supply Voltage

Vcc

Power Dissipation

Pd

Operating Temperature

Topr

Storage Temperature

Tstg

VALUE

30

400

-45 to 85

-65 to 150

UNIT

V

mW

°C

°C

UTC UNISONIC TECHNOLOGIES CO., LTD. 1

QW-R108-005,A

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