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L3240 - ELETRONIC TWO-TONE RINGER

Datasheet Summary

Description

L3240 is a monolithic integrated circuit designed to replace the mechanical bell in telephone sets, in connectionwith an electro acoustical converter.

The device can drive either directly a piezo ceramic converter (buzzer) or a small loudspeaker.

In this case a transformer is needed.

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Datasheet preview – L3240

Datasheet Details

Part number L3240
Manufacturer STMicroelectronics
File Size 123.77 KB
Description ELETRONIC TWO-TONE RINGER
Datasheet download datasheet L3240 Datasheet
Additional preview pages of the L3240 datasheet.

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Full PDF Text Transcription

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L3240 ELETRONIC TWO-TONE RINGER . . . . . . LOW CURRENT CONSUMPTION, IN ORDER TO ALLOW THE PARALLEL OPERATION OF 4 DEVICES INTEGRATED RECTIFIER BRIDGE WITH ZENER DIODES TO PROTECT AGAINST OVERVOLTAGES LITTLE EXTERNAL CIRCUITRY TONE AND SWITCHING FREQUENCIES ADJUSTABLE BY EXTERNAL COMPONENTS INTEGRATED VOLTAGE AND CURRENT HYSTERESIS COMPLEMENTARY OUTPUT CONFIGURATION Minidip SO8 ORDERING NUMBERS : L3240B1 (Minidip) L3240D1 (SO8) DESCRIPTION L3240 is a monolithic integrated circuit designed to replace the mechanical bell in telephone sets, in connectionwith an electro acoustical converter. The device can drive either directly a piezo ceramic converter (buzzer) or a small loudspeaker. In this case a transformer is needed.
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