LS656 series datasheets. Manufacturer: SGS-Thomson Microelectronics.

LS656AB Telephone speech circuit with multifrequency tone generator interface in 16-pin DIP package. Operational temperature range from -45°C to 70°C. Datasheet*) LS656B Telephone speech circuit with multifrequency tone generator interface in 16-pin DIP package. Operational temperature range from -45°C to 70°C. Datasheet*) LS656AD1 Telephone speech circuit with multifrequency tone generator interface in 20-pin SO package. Operational temperature range from -45°C to 70°C. Datasheet*) LS656 TELEPHONE SPEECH CIRCUIT WITH MULTIFREQUENCY TONE GENERATOR INTERFACE Datasheet*)

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