Memory device, memory system having same, and method of operating same

A memory device includes: a memory cell array having memory cells connected to word lines and bit lines; and a clock buffer receiving a clock signal for performing a read operation or a write operation on at least one of the memory cells. The clock buffer includes a plurality of clock repeaters connected in series, the plurality of clock repeaters including at least one pair of clock repeaters having different unbalanced driving capabilities. 一种存储器装置包括：存储器单元阵列，其具有连接至字线和位线的存储器单元；以及时钟缓冲器，其接收用于对存储器单元中的至少一个执行读操作或写操作的时钟信号。时钟缓冲器包括多个串联的时钟中继器，所述多个时钟中继器包括具有不同的不平衡的驱动能力的至少一对时钟中继器。