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73K302L - Single-Chip Modem

General Description

The 73K302L is a highly integrated single-chip modem IC which provides the functions needed to construct a Bell 202, 212A and 103 compatible modem.

Key Features

  • added. The 73K302L is capable of 1200 or 0-300 bit/s full-duplex operation over dial-up lines. 4-wire full-duplex capability and a low speed back channel are also provided in Bell 202 mode. The 73K302L recognizes and generates a 900 Hz soft carrier turn-off tone, and allows 103 for 300 bit/s FSK operation. The 73K302L integrates analog, digital, and switched-capacitor array functions on a single substrate, offering excellent performance and a high level of functional integration in a single 28-p.

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Full PDF Text Transcription (Reference)

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DESCRIPTION The 73K302L is a highly integrated single-chip modem IC which provides the functions needed to construct a Bell 202, 212A and 103 compatible modem. The 73K302L is an enhancement of the 73K212L single-chip modem with Bell 202 mode features added. The 73K302L is capable of 1200 or 0-300 bit/s full-duplex operation over dial-up lines. 4-wire full-duplex capability and a low speed back channel are also provided in Bell 202 mode. The 73K302L recognizes and generates a 900 Hz soft carrier turn-off tone, and allows 103 for 300 bit/s FSK operation. The 73K302L integrates analog, digital, and switched-capacitor array functions on a single substrate, offering excellent performance and a high level of functional integration in a single 28-pin DIP or PLCC package.