Holtek Semiconductor
15-Memory Tone/Pulse Dialer
Holtek Semiconductor
Operation Amplifier
Holtek Semiconductor
TinyPower™ Operation Amplifier
Holtek Semiconductor
RF single chip for cordless phone
Holtek Semiconductor
DTMF Receiver
Holtek Semiconductor
Low Voltage Operational Amplifiers
Holtek Semiconductor
DTMF Generators