Low leakage output driver circuit which can be utilized in a mul

Details Low leakage output driver circuit which can be utilized in a mul Low leakage output driver circuit which can be utilized in a mul

1995-10-19

1998-03-03

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327321, 326 83, H03K 17687, H03K 1716

Patent

active

057239924

ABSTRACT:
An improved output driver circuit is disclosed which can be utilized when a plurality of voltage potentials are present. The output driver circuit comprises a first pull-up transistor coupled to a first voltage potential, a second pull-down transistor coupled to a second voltage potential, and a pad member coupled to the first pull-up and second pull-down transistor. The driver circuit further includes a circuit means which is coupled to the pad member and the first pull-up transistor. Accordingly, through this arrangement, the circuit substantially reduces the leakage through the first pull-up transistor when the pad member is coupled to a third voltage potential. An output driver circuit in accordance with the present invention, can be utilized in an integrated circuit environment where multiple voltages such as 3.3 volts and 5 volts are present and the output driver circuit will operate effectively because the leakage path normally associated with such circuits is substantially minimized.

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patent: 5546020 (1996-08-01), Lee et al.
patent: 5548229 (1996-08-01), Segawa et al.

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