Image reading apparatus and semiconductor device

An image reading apparatus comprising:

• a plurality of image reading chips for reading an image,
• wherein each of the plurality of image reading chips includes
• a pixel that includes a light receiving element which receives light from the image and performs photoelectric conversion,
• a voltage boosting circuit that generates a transmission control signal for transmitting electric charges which are generated on the basis of the photoelectric conversion that is performed by the light receiving element, and
• a reading circuit which generates an image signal on the basis of the electric charges which are transmitted and outputs the image signal, and
• wherein the voltage boosting circuit operates during a period in which the light receiving element of the pixel receives the light and during a period in which the electric charges that are generated on the basis of the photoelectric conversion which is performed by the light receiving element are transmitted, and stops an operation during a period in which the reading circuits of the other image reading chips output the image signals.