Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Converging with plural inputs and single output
Patent
1996-09-18
1998-08-04
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Converging with plural inputs and single output
327408, H03K 1716
Patent
active
057899665
ABSTRACT:
Signal propagation time through a transmission gate array or multiplexer is significantly reduced and output signal transition time is halved by detecting non-selection of a section of the multiplexer and activating an output circuit, preferably in the form of a logic gate, to respond to a signal passed through a selected section of the transmission gate array or multiplexer. Specifically, upon non-selection of a section, an appropriate logic-valued signal at a reference voltage is propagated on an internal node of the multiplexer to the input of the output circuit to precondition or activate the output circuit. Since this signal is strongly tied to the reference voltage, the response of the output circuit is improved in both response time and transition time. Further, capacitance of internal nodes of the multiplexer is insulated or isolated from the inputs to the multiplexer, avoiding trade-offs between circuit performance and wiring congestion.
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IBM Technical Disclosure Bulletin vol. 36 No. 07 Jul. 1993 "Fast-Switch and Sense Array Data Circuit".
Callahan Timothy P.
International Business Machines - Corporation
Shin Eunja
Shkurko Eugene I.
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