Integrated circuit switchable between a line driver function and

Details Integrated circuit switchable between a line driver function and Integrated circuit switchable between a line driver function and

1994-05-06

1995-07-11

Hudspeth, David R.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

326 86, H03K 1900

Patent

active

054324653

ABSTRACT:
An integrated circuit which is switchable between a line driver function and a bidirectional transceiver function is provided. The integrated circuit comprises a first buffer, a second buffer and a logic control function. The first buffer has a first input terminal, a first output terminal, and a first control terminal which receives a first control signal. The second buffer has a second input terminal coupled to the first output terminal, has a second output terminal coupled to the first input terminal and has a second control terminal which receives a second control signal. The logic control function generates the first and second control signals responsive to a selection signal, a direction signal and an output enable signal. As the selection signal is asserted the invention functions as a line driver, and as the selection signal is negated the invention functions as a bidirectional transceiver.

REFERENCES:
patent: 4835418 (1989-05-01), Hsieh
patent: 4987319 (1991-01-01), Kawana
patent: 5051622 (1991-09-01), Pleva
patent: 5111079 (1992-05-01), Steele
patent: 5115149 (1992-05-01), Hashimoto
patent: 5233241 (1993-08-01), Nishimori
patent: 5248908 (1993-09-01), Kimura
patent: 5303180 (1994-04-01), McAdams

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