Integrated circuit device and oscillator

An integrated circuit device having a first side and a second side as an opposite side to the first side in a plan view, comprising:

• a clock input terminal disposed along the first side, to which a reference clock signal is input;
• a first power supply voltage input terminal disposed along the first side, to which a first power supply voltage as a source of a power supply voltage supplied to a first circuit that operates at a frequency of the reference clock signal is input;
• a clock output terminal disposed along the second side, from which an output clock signal having a frequency different from that of the reference clock signal is output;
• a second power supply voltage input terminal disposed along the second side, to which a second power supply voltage as a source of a power supply voltage supplied to a second circuit that operates at the frequency of the output clock signal is input;
• a first ground terminal disposed between the clock input terminal and the first power supply voltage input terminal along the first side;
• and
• a second ground terminal disposed between the clock output terminal and the second power supply voltage input terminal along the second side.