BU8872 telephones equivalent, dtmf receiver for telephones.
1) Dynamic range of 45dB. (internal AGC) 2) 4-bit binary serial data output. 3) Guard time can be controlled through host microcomputer. 4) Input pins equipped with hyste.
Telephone answering machines FFeatures 1) Dynamic range of 45dB. (internal AGC) 2) 4-bit binary serial data output. 3) G.
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