The selective pull-up (SP) noise immunity scheme for dynamic circuits

Summary form only given. Noise is an important consideration in the design of integrated circuits. Increased immunity to noise, however, typically comes at the expense of increased delay. So, it is very important to have an adequate noise immunity with a minimum penalty in performance. "Global" noise immunity schemes can be used when the noise is approximately the same on all nodes in the circuit; but when a few nodes are noisier then others much better results can be obtained by selective noise immunity schemes. The selective pull-up (SP) technique for dynamic circuits is a method for improving the noise immunity of inputs selectively, so that the least penalty in delay is paid for inputs that intrinsically have higher noise immunity