BU8874 telephones equivalent, dtmf receiver for telephones.
1) Dynamic range of 45dB. (internal AGC) 2) Power down mode. 3) 4-bit binary serial data output. 4) Guard time can be controlled through host microcontroller. 5) Input pi.
Telephone answering machines FFeatures 1) Dynamic range of 45dB. (internal AGC) 2) Power down mode. 3) 4-bit binary seri.
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