Programmable driver circuit for multi-source buses

Details Programmable driver circuit for multi-source buses Programmable driver circuit for multi-source buses

1996-11-26

1999-03-09

Santamauro, Jon

Electronic digital logic circuitry

Interface

Current driving

326 49, 326 58, H03K 190185

Patent

active

058806067

ABSTRACT:
There is disclosed an integrated circuit including a programmable driver circuit having first and second transistors. Each of the first and second transistors has first, second and third terminals. The first terminal of each of the first and second transistors are coupled together to form an input node. The second terminal of the first transistor is coupled to a power node. A third terminal of the first transistor is coupled to a first intermediate node. The second terminal of the second transistor is coupled to a second intermediate node. The third terminal of the second transistor is coupled to a reference potential. A first switch having at least one input is coupled between the first and second intermediate nodes. Third and fourth transistors each having first, second and third terminals. The first terminal of the third transistor is coupled to a third intermediate node. The first terminal of the fourth transistor is coupled to the second intermediate node. The second terminal of the third transistor is coupled to the power node. The third terminal of the third transistor is coupled to the second terminal of the fourth transistor to define an output node. The third terminal of the fourth transistor is coupled to the reference potential. A second switch having at least one control input is coupled between the third intermediate node and the first intermediate node.

REFERENCES:
patent: 4804867 (1989-02-01), Okitaka et al.
patent: 5034629 (1991-07-01), Kinugasa et al.
patent: 5036222 (1991-07-01), Davis
patent: 5434519 (1995-07-01), Trinh et al.
patent: 5497105 (1996-03-01), Oh et al.
patent: 5570043 (1996-10-01), Churchill

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