Single flux quantum circuits for 2.5 Gbps data switching

We have designed and measured single flux quantum (SFQ) circuits for data switching at 2.5 Gbps. A fully functional 2/spl times/2 switching node is presented. The node can be used to form a larger switching fabric (4/spl times/4, 8/spl times/8, etc.). The node accepts data streams at either or both inputs, routing the data based on address bits present in the data stream. This approach allows the data to be self-routing and the switch to be self-synchronous. In addition, the switch can route data correctly on an active input line if the other is idle.

[1]  Joonhee Kang,et al.  4.6 GHz SFQ shift register and SFQ pseudorandom bit sequence generator , 1995, IEEE Transactions on Applied Superconductivity.

[2]  J.X. Przybysz,et al.  Performance of MVTL OR-AND gates when data precedes bias , 1993, IEEE Transactions on Applied Superconductivity.

[3]  M. Hosoya,et al.  Superconducting packet switch , 1995, IEEE Transactions on Applied Superconductivity.

[4]  Thomas K. Helstern,et al.  Physical Design Issues for Very Large ATM Switching Systems , 1991, IEEE J. Sel. Areas Commun..

[5]  D.Y. Zinoviev,et al.  New RSFQ circuits (Josephson junction digital devices) , 1993, IEEE Transactions on Applied Superconductivity.

[6]  B. Murdock,et al.  Superconductive crossbar system for communication applications , 1994 .

[7]  Kenneth E. Batcher,et al.  Sorting networks and their applications , 1968, AFIPS Spring Joint Computing Conference.

[8]  V. Semenov,et al.  RSFQ logic/memory family: a new Josephson-junction technology for sub-terahertz-clock-frequency digital systems , 1991, IEEE Transactions on Applied Superconductivity.

[9]  Hamid Ahmadi,et al.  A survey of modern high-performance switching techniques , 1989, IEEE J. Sel. Areas Commun..

[10]  Joonhee Kang,et al.  A single-flux-quantum demultiplexer , 1997, IEEE Transactions on Applied Superconductivity.

[11]  V. Semenov,et al.  Single flux, quantum B flip-flop and its possible applications , 1994, IEEE Transactions on Applied Superconductivity.

[12]  J. Shah,et al.  Young , 1935, Annals of Medical History.

[13]  S. Yorozu,et al.  A superconductive ring-pipelined network system , 1995, IEEE Transactions on Applied Superconductivity.