Single Power Supply Sound Processors with Built-in Pre Amplifier for Tape Recording and Play Back 2 cHANNEL(S), color='#FF0000'>tone color='#FF0000'>control cIRcUIT, PQFP64
color='#FF0000'>tone Ringer Ic for Telephone Set(?佃??虹???????) communications LSIs > Ics for telephone > color='#FF0000'>tone ringer From old datasheet system color='#FF0000'>tone Ringer Ic for Telephone Set(电话机的响铃芯片)