Solid-state imaging device and imaging device

A solid-state imaging device, comprising:

• a plurality of unit pixels that each converts incident light into a pixel signal, the unit pixels being arranged in rows and columns;
• a plurality of AD conversion units respectively provided in a plurality of columns and each configured to convert the pixel signal converted by the unit pixel located in an associated column into digital data of N bits, N being an integer not smaller than 2;
• and
• a plurality of data storage units respectively provided in the plurality of columns,
• wherein the data storage units each include N flip-flop circuits respectively corresponding to bits of the digital data of N bits,
• the solid-state imaging device further comprising:
• a plurality of data switching units each configured to switch between:
• a first state in which the digital data of N bits converted by the AD conversion unit is stored in the data storage unit of the associated column;
• and
• a second state in which the N flip-flop circuits included in each of the data storage units are serially connected.