Abstract: Aspects of the disclosure are directed to adaptively delaying an input signal. In accordance with one aspect, an apparatus includes a plurality of delay units, wherein each of the plurality of delay units includes a substantially similar output load characteristic; a plurality of buffer units, wherein each of the plurality of buffer units is coupled to one of the plurality of delay units; wherein a quantity of the plurality of delay units equals a quantity of the plurality of buffer units; an additional delay unit coupled to a delay unit output of one of the plurality of delay units; and a one-hot decoder coupled to each of the plurality of buffer units, the one-hot decoder configured to enable one and only one of the plurality of buffer units.

Abstract: Aspects of the disclosure are directed to adaptively delaying an input signal. In accordance with one aspect, an apparatus includes a plurality of delay units, wherein each of the plurality of delay units includes a substantially similar output load characteristic; a plurality of buffer units, wherein each of the plurality of buffer units is coupled to one of the plurality of delay units; wherein a quantity of the plurality of delay units equals a quantity of the plurality of buffer units; an additional delay unit coupled to a delay unit output of one of the plurality of delay units; and a one-hot decoder coupled to each of the plurality of buffer units, the one-hot decoder configured to enable one and only one of the plurality of buffer units.

Abstract: A circuit has been developed that reduces the effective strength of a keeper circuit during an interval in which at least one path of an evaluation circuit is sensitive to a keeper device. The keeper circuit includes a keeper gating device coupled to a keeper device that is responsive to a keeper control. The keeper device is sized to overcome leakage current in the evaluation circuit. In some configurations, the keeper circuit includes a weak keeper device that is minimally sized to overcome noise while the keeper device is effectively disabled. In some configurations, the reduction in effective strength of the keeper circuit occurs before arrival of the fastest signal coupled to a sensitive output path of the evaluation circuit and the effective strength is restored after arrival of the slowest signal coupled to the sensitive output path of the evaluation circuit.

Abstract: A circuit has been developed that reduces the effective strength of a keeper circuit during an interval in which at least one path of an evaluation circuit is sensitive to a keeper device. The keeper circuit includes a keeper gating device coupled to a keeper device that is responsive to a keeper control. The keeper device is sized to overcome leakage current in the evaluation circuit. In some configurations, the keeper circuit includes a weak keeper device that is minimally sized to overcome noise while the keeper device is effectively disabled. In some configurations, the reduction in effective strength of the keeper circuit occurs before arrival of the fastest signal coupled to a sensitive output path of the evaluation circuit and the effective strength is restored after arrival of the slowest signal coupled to the sensitive output path of the evaluation circuit.

Abstract: A method for controlling delays in silicon on insulator circuits is disclosed. A semiconductor integrated circuit device comprises a first circuit and a second circuit. The first circuit includes multiple transistors, some of which have a floating body. In addition, the first circuit includes an input and an output. The second circuit is selectively coupled to a floating body of some of the transistors in the first circuit in order to control the delay of the output of the first circuit.