MOS technology voltage switch-over circuit
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Nov 19, 1987
filing date -
Nov 21, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A voltage switch-over circuit, depending on a switch-over signal, delivers either a first voltage Vpp or a second voltage Vcc at its output, the voltage Vpp being greater than the voltage Vcc. The said circuit consists of a first MOS transistor with one of its electrodes connected to the voltage Vcc and a set of two series-connected MOS transistors with one of their electrodes connected to the voltage Vpp and with their two gates connected together so as to create a floating node at the common point between the two MOS transistors, the other electrode of the first MOS transistor and the other electrode of the set of two MOS transistors being connected together, and the gates of the first MOS transistor and those of the set of two MOS transistors respectively receiving the switch-over signal and the reverse switch-over signal.
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