Electronic digital logic circuitry – Interface – Logic level shifting
Patent
1999-06-02
2000-11-28
Nguyen, Viet Q.
Electronic digital logic circuitry
Interface
Logic level shifting
326 24, 326 25, 326 26, 326 33, 326 34, 326 57, H03K 19003
Patent
active
061540587
ABSTRACT:
An output buffer includes a p-channel transistor, and first and second n-channel transistors. The p-channel transistor has one of a source and drain which is connected to power supply and the other which is connected to an output node connected to an output terminal. The first n-channel transistor has one of a source and drain which is grounded and the other which is connected to the output node. The second n-channel transistor is series-connected to the p-channel transistor between a power supply and the output node and receives at a gate a power supply potential level which rises at substantially the same time as the power supply upon ON operation.
REFERENCES:
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patent: 5438278 (1995-08-01), Wong et al.
patent: 5500610 (1996-03-01), Burstein
patent: 5852382 (1998-12-01), Lentini et al.
patent: 5959481 (1999-09-01), Donnelly et al.
patent: 6005413 (1999-12-01), Schmitt
patent: 6040711 (2000-03-01), Airaksinen et al.
NEC Corporation
Nguyen Viet Q.
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