5 volt CMOS driver circuit for driving 3.3 volt line

Details 5 volt CMOS driver circuit for driving 3.3 volt line 5 volt CMOS driver circuit for driving 3.3 volt line

1994-09-22

1998-07-28

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327112, 327331, 327391, 327541, H03K 508

Patent

active

057867208

ABSTRACT:
A driver circuit that is powered by a power supply voltage has an output terminal, and includes a pull-up transistor for pulling the output terminal up toward the power supply voltage. A voltage divider that is connected across the power supply voltage has a tap connected in circuit to an input of the pull-up transistor and includes variable resistance elements whose resistance varies together with a threshold voltage of the pull-up transistor for limiting a voltage at the output terminal to within a predetermined range that is lower than the power supply voltage.

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Martin, Brian C.; Tips for Straddling the 3-V to 5V Fence; Electronic Design; Apr. 4, 1994, pp. 67-73.

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