TY Semiconductor

HT8A977B works as encoder and HT8A978B works as decoder

BI Technologies

T1/CEPT/ISDN-Pri Telecom Products

Holtek Semiconductor

3/5-Key USB+PS/2 Optical Mouse Controller

Holtek Semiconductor

4.2 Second LOG-PCM Speech

Holtek Semiconductor

3/5-Key 3D PS/2 Optical Mouse Controller

Holtek Semiconductor

EasyVoice™ 3-Second Speech

Holtek Semiconductor

3/5-Key USB+PS/2 Optical Mouse Controller

Holtek Semiconductor

Multimedia Keyboard Encoder 8-Bit MCU

Holtek Semiconductor

3/5-Key 3D PS/2 Optical Mouse Controller

BI Technologies

T1/CEPT/ISDN-Pri Telecom Products

Holtek Semiconductor

60mA Audio Power Amp

Holtek Semiconductor

EasyVoice™ 3-Second Speech

Holtek Semiconductor

330mW Stereo Audio Power Amp With Shutdown

Holtek Semiconductor

3/5-Key 3D PS/2 Optical Mouse Controller