Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Patent
1996-11-13
2000-02-29
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
327208, 327199, 327219, 327198, 327210, H03K 3037
Patent
active
060314036
ABSTRACT:
According to the preferred embodiment of the present invention pull-up/pull-down circuits are provided that use transistors with different threshold voltages to assure power-up to the correct predetermined state. These circuits have the ability to hold a node up or down while drawing very little DC current. In one embodiment a pull-up/pull-down circuit is provided that powers up to a first state with the pull-up node high and the pull-down node low, and that can be toggled from one state to another. A second embodiment provides a pull-up or pull-down circuit that powers up to the desired state and can be disabled by pulling the pull-up node low or pulling the pull-down node high. The circuits remain disabled until the power to the circuit is cycled.
REFERENCES:
patent: 4558241 (1985-12-01), Suzuki et al.
patent: 4743841 (1988-05-01), Takeuchi
patent: 4872141 (1989-10-01), Plus et al.
patent: 4933899 (1990-06-01), Gibbs
patent: 4970454 (1990-11-01), Stambaugh et al.
patent: 5057774 (1991-10-01), Verhelst et al.
patent: 5189640 (1993-02-01), Huard
patent: 5321354 (1994-06-01), Ooshima et al.
patent: 5332973 (1994-07-01), Brown et al.
patent: 5353248 (1994-10-01), Gupta
patent: 5371457 (1994-12-01), Lipp
patent: 5383194 (1995-01-01), Sloan et al.
patent: 5384504 (1995-01-01), Dickinson et al.
patent: 5392293 (1995-02-01), Hsue
patent: 5406134 (1995-04-01), Menut
patent: 5444408 (1995-08-01), Merritt
patent: 5467038 (1995-11-01), Motley et al.
patent: 5648930 (1997-07-01), Randazzo
Callahan Timothy P.
International Business Machines - Corporation
Luu An T.
Shkurko Eugene I.
LandOfFree
Pull-up and pull-down circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pull-up and pull-down circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pull-up and pull-down circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-686502