Sgs-Thomson Microelectronics Limited

Mostek Corporation

Mark G Johnson

Ronald T Taylor

A decoder circuit for disabling a defective element in a circuit having redundant replacement elements employs a fuse on a signal path through the decoder circuit from a selection device to a low-impedance output device and a weak default circuit, such as a pull-up transistor, for forcing the state of the output circuit to a low-impedance default state when the fuse is blown.

Defective element disabling circuit having a laser-blown fuse

A MOSFET sense amplifier applies both input signals to both input transistors of a common-gate sense amplifier; each input signal being applied to the source of one input transistor and the gate of the other, thereby effectively doubling the applied input signal.

Growing community of inventors

Dallas, TX, United States of America

Mark G Johnson