HOLTEK - HT9200B-14SOPLF - IC, DTMF GENERATOR, SMD, SOP14
HOLTEK HT9200A-8SOPLF IC, DTMF GENERATOR, SMD, SOP8
DTMF Signaling Circuit,
Holtek HT9200A Telecom IC SOP-8 5V Commercial Extended
Switching Regulator/Controller
