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Domino inspired MOBILE networks

J. Núñez, M.J. Avedillo, J.M. Quintana
2012 Electronics Letters  
MOBILE networks can be operated in a gate-level pipelined fashion allowing high throught-output. If MOBILE gates are directly chained, a four-phase clock scheme is requiered. A single phase scheme has been recently reported that alternates rising and falling edge triggered MOBILE gates. This paper proposes and validates a novel two-phase interconnection scheme resembling conventional domino pipelines. It exhibits advantages in terms of speed with respect to both four-phase and singlephase
more » ... d singlephase interconnections schemes. In adition, the new architecture improves logic flexibility regarding domino pipeline counterpart since inverting and non-inverting stages can be interspersed. Introduction: Resonant tunnelling diodes (RTDs) are considered today as one of the most mature types of quantum-effect devices, already operating at room temperature, and being promising candidates for future nanoscale integration. RTDs exhibit a negative differential resistance (NDR) region in their current-voltage characteristics, which can be exploited to significantly increase the functionality implemented by a single gate in comparison to MOS and bipolar technologies [1]. Circuits taking advantage of the NDR region have been reported, which cover different applications (memories, logic, oscillators, A/D converters, ...) and with different goals (high speed, low power, ...). Logic circuit applications of RTDs are mainly based on the MOnostable-BIstable Logic Element (MOBILE) [2] which exploits the negative differential resistance of their I-V characteristic (Fig. 1a) . The MOBILE in Fig. 1b is an edge-triggered current controlled gate which consists of two RTDs connected in series and driven by a switching bias voltage, V CK . When V CK is low, both RTDs are in the on-state and the
doi:10.1049/el.2011.3295 fatcat:csg4yvuwp5hdpjkwcqqm3bnque