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BU8877

Call Progress Tone Decoder

Description

www.DataSheet4U.com 99W121A Call Progress Tone Decoder for Telephone BU8877/F Description The BU8877 and BU8877F are ICs that detect dial tones from a call progress signal used in the telephone lines. The ICs detect dual signals 350Hz(from 345 to 355Hz)and 440Hz(from 435 to 445Hz). Dimension(Units:mm) BU8877 Features 1) No malfunction by voice signal 2...

ETC

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