Patent Number: 7,085,177

Title: Maximum swing thin oxide levelshifter

Abstract: An apparatus comprising a first transistor pair, second transistor pair, a third transistor pair and a fourth transistor pair. The first transistor pair may be (i) implemented as thin oxide devices and (ii) configured to receive a differential input signal. The second transistor pair may be (i) implemented as thick oxide devices and (ii) configured to generate a differential output signal in response to the differential input signal. The output signal has a voltage higher than the input signal. The third transistor pair may be (i) connected between the first and second transistor pairs and (ii) configured to protect the first transistor pair. The fourth transistor pair may be (i) connected between the third transistor pair and a ground and (ii) configured to increase an operating speed of the apparatus.

Inventors: Savage; Scott C. (Fort Collins, CO)

Assignee: LSI Logic Corporation

International Classification: G11C 7/00 (20060101)

Expiration Date: 8/01/02018