Novel 4RTD Logic Circuits

Hideaki YAMADA
Takao WAHO

Publication
IEICE TRANSACTIONS on Electronics   Vol.E88-C    No.4    pp.699-704
Publication Date: 2005/04/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.4.699
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Fundamental and Application of Advanced Semiconductor Devices)
Category: Nanomaterials and Quantum-Effect Devices
Keyword: 
RTD,  current-mode,  ultrahigh-speed operation,  

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Summary: 
Based on the similarity in current-voltage characteristics of resonant-tunneling diodes (RTDs) and tunneling-type superconductive Josephson junctions, novel current-mode logic circuits consisting of four RTDs have been proposed. NAND and NOR functions, as well as AND and OR, can be obtained in a simple circuit configuration. SPICE simulation showed that the present circuits can operate at a clock frequency as high as 200 GHz.