BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate example embodiments of the present invention and, together with the description, serve to explain principles of the present invention.
FIG. 1 is a diagram of a conventional semiconductor device including a level shifter circuit.
FIG. 2 is a waveform diagram of an input signal and an output signal of the level shifter circuit of FIG. 1.
FIG. 3 illustrates a quantity of leakage current corresponding to the waveform of FIG. 2.
FIG. 4 is a diagram of another conventional semiconductor device including a level shifter circuit.
FIG. 5 is a graph illustrating a voltage VPP and a voltage VDD applied to the semiconductor device of FIG. 4.
FIG. 6 is a diagram of a semiconductor device including a level shifter circuit according to an example embodiment of the present invention.
FIG. 7 illustrates the waveform of an output signal OUTS1 of a level shifter circuit according to another example embodiment of the present invention.
FIG. 8 illustrates a waveform of the leakage current with respect to time corresponding to FIG. 7 according to another example embodiment of the present invention.
FIG. 9 is a diagram of another semiconductor device including a level shifter circuit according to another example embodiment of the present invention.
FIG. 10 is a diagram of another semiconductor device including a level shifter circuit according to another example embodiment of the present invention.
FIG. 11 illustrates voltage levels of the external voltage VEXT, the first voltage VDD and the second voltage VPP over time within the semiconductor device of FIG. 10 according to another example embodiment of the present invention.