Output driver with level shifting and voltage protection

Details Output driver with level shifting and voltage protection Output driver with level shifting and voltage protection

1996-05-16

1998-04-07

Santamauro, Jon

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 83, 327543, H03K 190185

Patent

active

057368694

ABSTRACT:
An output driver circuit according to the present invention provides level shifting and self-biased voltage protection. The output driver circuit includes first and second complementary data terminals, an output terminal. A pull-up and a pull-down transistor are coupled to the output terminal and have first and second control terminals, respectively. The second control terminal is coupled to the second data terminal. A differential transistor pair has control terminals coupled to the first and second data terminals, respectively, and defines first and second current paths. A cross coupled transistor pair is coupled in the first and second current paths and has a control output terminal coupled to the control terminal of the pull-up transistor. A self-biased voltage protection transistor is coupled between the pull-up transistor and the output terminal and has a control terminal coupled to the second current path, between the differential transistor pair and the cross coupled transistor pair. The output driver circuit can be adapted to provide 3.3V drive capability in a 2.5V fabrication process or 5.0V drive capability in a 3.3V fabrication process, for example.

REFERENCES:
patent: 5266849 (1993-11-01), Kitahara et al.
patent: 5300832 (1994-04-01), Rogers
patent: 5321324 (1994-06-01), Hardee et al.
patent: 5338978 (1994-08-01), Larsen et al.
patent: 5406141 (1995-04-01), Yero et al.
patent: 5410267 (1995-04-01), Haycock et al.
patent: 5418476 (1995-05-01), Strauss
patent: 5450025 (1995-09-01), Shay
patent: 5467031 (1995-11-01), Nguyen et al.
patent: 5537059 (1996-07-01), Asahina
patent: 5559464 (1996-09-01), Orii et al.

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