Apparatus and method for improving input/output throughput of memory system

An operating method of a memory system comprising multiple memory dies capable of outputting data of different sizes in response to a read request, the operating method comprising:

• performing a correlation operation on the read request so that the multiple memory dies interleave and output target data corresponding to the read request through multiple channels,
• determining a pending credit using a result of the correlation operation;
• and
• reading, from the multiple memory dies, target data corresponding to the read request and additional data stored in a same storage unit as the target data, based on a type of the target data corresponding to the read request and the pending credit.

A memory system comprising:

• a memory device including plural dies, each having plural pages, each having plural sections;
• and
• a controller electrically coupled to the dies through plural channels respectively and suitable for providing the dies with read commands requesting data to be read from sections of different offsets within the respective dies, and controlling the dies to read the requested data according to a full sync interleaving scheme,
• wherein the controller controls each of the dies to perform a read operation in units of the sections or in units of the pages according to a type of a corresponding read command among the provided read commands.