Electronic digital logic circuitry – Interface – Supply voltage level shifting
Reexamination Certificate
2005-07-19
2005-07-19
Tran, Anh Q. (Department: 2819)
Electronic digital logic circuitry
Interface
Supply voltage level shifting
C326S068000, C326S080000
Reexamination Certificate
active
06919737
ABSTRACT:
A voltage-level converter and a method of converting a first logic voltage level to a second logic voltage level are described. In one embodiment, a voltage-level converter connects a first logic unit connected to a first supply voltage to a second logic unit connected to a second supply voltage. The voltage-level converter includes at least one transistor connected to the second supply voltage. The at least one transistor has a threshold voltage whose absolute value is greater-than-or-about-equal to the absolute value of the difference between the second supply voltage and the first supply voltage. In an alternative embodiment, a method for converting a first logic voltage level to a second logic voltage level includes transmitting a logic signal from a logic unit having an output voltage swing of between a first voltage level and a second voltage level, receiving the logic signal at a logic circuit having a pull-up transistor and an output voltage swing between a third voltage level and a fourth voltage level, and turning off the pull-up transistor when the logic signal has a value slightly greater than the difference between the third voltage level and the first voltage level.
REFERENCES:
patent: 5027007 (1991-06-01), LaRue et al.
patent: 5115434 (1992-05-01), Aizaki
patent: 5610544 (1997-03-01), Aoki
patent: 6249145 (2001-06-01), Tanaka et al.
Alvandpour Atila
Krishnamurthy Ram K.
LandOfFree
Voltage-level converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voltage-level converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage-level converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3368580