| 摘要 |
PURPOSE: Level shifting apparatus is provided to prevent competition between transistors and to level-shift input signals. CONSTITUTION: Level shifting apparatus includes a substrate voltage generation part(11), a compensation voltage generation part(12), a voltage selection part(13), and a level shifting circuit(14). The substrate voltage generation part generates a substrate voltage. The compensation voltage generation part generates a compensation voltage with a level higher than that of the substrate voltage. The voltage selection part selects one of the substrate voltage and the compensation voltage as a pull-down voltage according to the voltage level of a power supply. The level shifting circuit level-shifts input signals according to the pull-down voltage and outputs the same as output signals. [Reference numerals] (11) Substrate voltage generation part; (12) Compensation voltage generation part; (13) Voltage selection part; (14) Level system circuit; |
