Time-delay selector

The invention reveals a time-delay selector. The time-delay selector includes a first connecting end, a second connecting end and n time-delay units; each time-delay unit is respectively selectively connected with the first connection end and the second connection end. The time-delay selector also includes selective interconnection layers; the selective interconnection layers are located at upper interconnection layers of the time-delay units, selective connection of the time-delay units is achieved by the selective interconnection layers, and m time-delay units is accessed between the first connection end and the second connection end. The time-delay selector has no need of increase of a new territory and only need to change a rear-section low-cost photomask through design of the rear-section territories (the selective interconnection layers); and through changing the selective interconnection layers, access of different time-delay units is achieved, flexible changeable multi-stage time-delay reconditioning is achieved, the time-delay precision is improved, and besides, the cost is reduced.