4-bit rapid single-flux-quantum decoder
作者： A.F. Kirichenko , V.K. Semenov , Y.K. Kwong , V. Nandakumar
DOI: 10.1109/77.403187
关键词:
摘要: We describe the design of a fast single-flux-quantum decoder which can be used, e.g., in RAMs, general-purpose microprocessors, and communication channel switches. The core circuit is tree single-bit SFQ demultiplexer with toggle (rather than reset-set) control. Three new RSFQ cells: demultiplexer, D flip-flop complementary outputs, serial XOR large parameter tolerances (dc bias margins /spl plusmn/25%, plusmn/26%, plusmn/27%, respectively) have been developed for project. designed first 16-bit prototype 1-kA/cm/sup 2/ niobium-trilayer technology tested it at low frequencies. was completely operable except 3 (of 16) output SFQ/DC converters. Simulations show that should allow data rate excess 60 Gbit/s switching time below 20 ps. >
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