Five volt safe output buffer circuit that controls the substrate

Details Five volt safe output buffer circuit that controls the substrate Five volt safe output buffer circuit that controls the substrate

1996-08-14

1998-10-20

Tokar, Michael J.

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 86, 326 87, H03K 190175, H03K 19094

Patent

active

058252061

ABSTRACT:
An input/output buffer for computer circuitry including a P type transistor device responsive to data signals for selectively furnishing voltage from a first source of potential at a buffer input/output terminal, a first predriver circuit for furnishing data signals from a source to the P type transistor device, the first predriver circuit including circuitry for slowing the application of data signals to the P type transistor device when the buffer input/output terminal is at a high level, a N type transistor device responsive to data signals for selectively furnishing voltage from a second source of potential at the buffer output terminal, a second predriver circuit for furnishing data signals from the source to the N type transistor device, and circuitry for slowing the receipt of data signals at the first predriver circuit.

REFERENCES:
patent: 5039874 (1991-08-01), Anderson
patent: 5126588 (1992-06-01), Reichmeyer et al.
patent: 5194764 (1993-03-01), Yano et al.
patent: 5491432 (1996-02-01), Wong et al.
patent: 5568081 (1996-10-01), Lui et al.
patent: 5570043 (1996-10-01), Churchill
patent: 5635861 (1997-06-01), Chan et al.

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