Semiconductor device and semiconductor system

A semiconductor device comprising:

• a first power voltage line to which a power voltage is supplied;
• a second power voltage line;
• a first impedance element provided between said first power voltage line and said second power voltage line;
• a first reference voltage line to which a reference voltage is supplied;
• a second reference voltage line;
• a second impedance element provided between said first reference voltage line and said second reference voltage line;
• an electronic circuit provided between said second power voltage line and said second reference voltage line, configured to perform a predetermined processing on an input signal;
• and
• a first transistor and a second transistor,
• wherein the first transistor is a P-channel MOS transistor, the second transistor is an N-channel MOS transistor, and both the first transistor and the second transistor are provided in series between said second power voltage line and said second reference voltage line, and each having its gate connected to its drain;
• in the semiconductor device.