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U4076B Datasheet Three-tone Ringer For Telephone Sets

Manufacturer: TEMIC Semiconductors (now Microchip)

Overview: U4076B Three-Tone Ringer for Telephone Sets.

General Description

The three-tone ringing integrated circuit U4076B, in conjunction with a piezo transducer or loudspeaker replaces the normal electromechanical telephone bell.

It is operated with the ringing current from the exchange.

There is also a possibility of operating the IC with the dc supply voltage, being developed for large operating range.

Key Features

  • D Three-tone ringing sequence with 800 Hz, 1067 Hz and 1333 Hz D Clock oscillator with ceramic resonator or LC series cct possible D Sequence frequency adjustable between 2.5 Hz and 25 Hz D Input protective diode D On-chip rectifier bridge D Protection circuit against ringing in a parallel circuit D D D D D Adjustable volume Push-pull output stage Piezo transducer or loudspeaker connection Common input for frequency and call recognition Reduced pulse duration for electromagnetic transducers.

More Datasheets from TEMIC Semiconductors (now Microchip)

Part Number Description
U4076B-FL Three-Tone Ringer for Telephone Sets
U4070B-FP Tone Ringer Interface
U4074B Tone Ringer Interface
U4030B Telephone Speech Circuit
U4050B Speech Circuit
U4055B Low-Voltage Electronic Speech Circuit
U4055B1 Low-Voltage Electronic Speech Circuit
U4080B Voice-Switched Circuit for Handsfree Operation
U4083 Low-Power Audio Amplifier for Telephone Applications
U4083B Low-Power Audio Amplifier for Telephone Applications

U4076B Distributor