BU8877 decoder equivalent, call progress tone decoder.
1) No malfunction by voice signal 2) Dual tone detection (350Hz and 440Hz) 3) Wide dynamic range 4) 3.58MHz crystal resonator
BU8877F
DIP8
Applications Telephone, Codel.
Telephone, Codeless telephone and Facsimile for the U.S.
SOP16
Absolute Maximum Ratings (Ta=25˚C)
Parameter Power supp.
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 b.
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