Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-01-08
1992-09-08
Mintel, William
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
357 59, 357 45, 357 40, 307443, 307448, 307571, 307572, H01L 2702
Patent
active
051463067
ABSTRACT:
Slew-rate control is implemented in input/output device structures where MOSFETs are employed to switch the output signal. These MOSFETs each have a substrate, an insulating layer adjacent to the substrate and a strip of semiconductor material separated from the substrate by the insulating layer. The strip of semiconductor material functions as the gate of the MOSFET. The strip of semiconductor material does not form a closed loop. One end of the strip of a first transistor is connected to one end of the strip of the second transistor. Thus, the gates of the two transistors are placed in series so that they are not switched on at the same time. A delay is thereby automatically introduced between the switching on of the two transistors. The delay is controlled by placing metal straps across selected transistor gates to effectively bypass the delays caused by the current propagating through the gates. Further control of the delay is gained by use of a feedback signal to increase or decrease the current in the gates.
REFERENCES:
patent: 4462041 (1984-07-01), Glenn
patent: 4500845 (1985-02-01), Ehni
patent: 4771195 (1988-09-01), Stein
patent: 4949139 (1990-08-01), Korsh et al.
Semiconductor Devices by S. M. Sze pp. 376-377.
Ferry Thomas V.
Hsue James S.
Kawa Jamil
Pierce Kerry M.
Walker William G.
Mintel William
Potter Roy
VLSI Technology, Inc
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