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LS1240 ELECTRONIC TWO - TONE RINGER

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® LS1240A ELECTRONIC TWO - TONE RINGER .....LOW CURRENT CONSUMPTION, IN ORDER TO ALLOW THE PARALLEL OPERATION OF 4 DEVICES INTEGRATED RECTIFIE.
LS1240A is a monolithic integrated circuit designed to replace the mechanical bell in telephone sets in connection with an electro-acoustical converte.

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STMicroelectronics LS1240-like datasheet