Patent ID: 7567115

Claim:
A fuse-fetching circuit, comprising: a plurality of fuses; a plurality of first switches each having a first data end, a second data end and a control end, wherein the first data end is connected to the fuse, and the control end is controlled by a fuse-fetching signal; and a shift register including a plurality of registers, each register including: a first latch connected to the second data end of each one of the plurality of first switches; a first transmission gate connected to an inverted output of the first latch; a second latch connected to an output of the first transmission gate; and a second transmission gate connected to an inverted output of the second latch; wherein a turn-on period of the first transmission gate does not overlap with a turn-on period of the second transmission gate, and the first switch is turned on during a fetching cycle in the turn-on period of the first transmission gate.