Temic Semiconductors

Zero Voltage Switch with Fixed Ramp

Philips Electronics

Speech and handsfree IC

Philips Electronics

Low voltage transmission circuits with dialler interface

Philips Electronics

Voice switched speakerphone IC

Telefunken Licences GmbH

Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator

Philips Electronics

Speech and loudspeaker amplifie IC with auxiliary inputs/outputs and analog multiplexer

Unspecified

Tone Ringer IC (14-Pin Plastic Package TO-116)

Philips Electronics

Versatile telephone transmission circuit with dialler interface

Philips Electronics

Speech and listening-in IC

Unspecified

13 BIT SERIES PARALLEL CONVERTER

Contek Microelectronics

LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE

Philips Electronics

Versatile speech/dialler/ringer with music-on-hold

Philips Electronics

Speech and listening-in IC

Philips Electronics

Low voltage versatile telephone transmission circuit with dialler interface