Patent ID: 7719304

Claim:
A radiation hardened flip-flop comprising: a temporal latch comprising: an input temporal node; feedback circuitry comprising at least one feedback path providing a first delay; a first output storage node, a second output storage node, a third output storage node, and a fourth output storage node, which are independent from each other and coupled to the input temporal node through the feedback circuitry; and a dual interlocked storage cell (DICE) latch comprising: a first DICE storage node selectively coupled to the first output storage node; a second DICE storage node selectively coupled to the second output storage node; a third DICE storage node selectively coupled to the third output storage node; a fourth DICE storage node selectively coupled to the fourth output storage node; and a DICE output node coupled to the at least one of the first, second, third, and fourth DICE storage nodes, wherein the DICE latch is a slave latch to the temporal latch.