Circuits, systems and methods for transferring data across a con

Details Circuits, systems and methods for transferring data across a con Circuits, systems and methods for transferring data across a con

1996-07-29

1998-06-09

Nguyen, Tan T.

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 86, 326 90, H03K 19097

Patent

active

057640823

ABSTRACT:
A system 500 is provided for transferring signals across a bus which includes a power source 550 operating between a high voltage rail at a first supply voltage level and a low voltage rail at a second supply voltage rail, power source 550 generating a third supply voltage level on an output thereto. The third supply voltage level is greater than the first supply voltage level. A processing circuitry 103, 104 is included for generating a plurality of data signals each having a first voltage swing between a first logic high level substantially equal to the first supply voltage level and a first logic low level substantially equal to the second supply voltage level. The system additionally includes a plurality of buffers, 520, each buffer 520 being coupled to the power source 550 output and receiving a selected one of the data signals. Each buffer 520 generates a boosted drive signal having a second voltage swing between a second logic high level substantially equal to the third supply voltage level and a second logic low level substantially equal to the second supply voltage level.

REFERENCES:
patent: 4687953 (1987-08-01), Varadarajan
patent: 5585744 (1996-12-01), Runas et al.
patent: 5644252 (1997-07-01), Watarai
patent: 5644255 (1997-07-01), Taylor

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