4 pezzi LS656B M1 CIRCUITO VOCALE TELEFONICO con MULTIFREQ. GENERATORE DI TONI NUOVO
In addition to the speech operation, the LS656 acts asan interfacefor the MF tonesignal (particularly for M761 C/MOS frequency synthesizer). WITH MULTIFREQUENCY TONE GENERATOR INTERFACE. TRANSPUTER ICs / BOARDS TRAM.