High voltage swing output buffer in low voltage technology

Details High voltage swing output buffer in low voltage technology High voltage swing output buffer in low voltage technology

1996-02-29

1998-09-15

Santamauro, Jon

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 83, H03K 190185, H03K 190948

Patent

active

058084800

ABSTRACT:
An integrated circuit output buffer that is fabricated using a relatively low voltage technology is capable of driving a relatively high voltage swing to an output conductor. For example, a buffer implemented in 3.3 volt CMOS technology can deliver a 5 volt output swing. This is achieved by scaling up the output voltage swings from the lower voltage level to the higher voltage level using one or more intermediate inverters that operate at successively higher voltage levels. In a preferred embodiment, the voltage levels are provided using a power conservation circuit that limits current flow through a resistor voltage divider network.

REFERENCES:
patent: 4704547 (1987-11-01), Kirsch
patent: 5029284 (1991-07-01), Feldbaumer et al.
patent: 5117131 (1992-05-01), Ochi et al.
patent: 5300832 (1994-04-01), Rogers
patent: 5381062 (1995-01-01), Morris
patent: 5408191 (1995-04-01), Han et al.
patent: 5483176 (1996-01-01), Rodriguez et al.

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