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Rapid Single-Flux-Quantum NOR Logic Gate Realized through the Use of Toggle Storage Loop
Yoshinao MIZUGAKI Koki YAMAZAKI Hiroshi SHIMADA
IEICE TRANSACTIONS on Electronics
Publication Date: 2020/10/01
Online ISSN: 1745-1353
Type of Manuscript: BRIEF PAPER
Category: Superconducting Electronics
superconducting digital gates, Nb IC, single-flux-quantum circuits,
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Recently, we demonstrated a rapid-single-flux-quantum NOT gate comprising a toggle storage loop. In this paper, we present our design and operation of a NOR gate that is a straightforward extension of the NOT gate by attaching a confluence buffer. Parameter margins wider than ±28% were confirmed in simulation. Functional tests using Nb integrated circuits demonstrated correct NOR operation with a bias margin of ±21%.