NCMOS: a high performance CMOS logic

CMOS has been the mainstay technology for VLSI design for the last several years. However, recently, BiCMOS technology has been proposed for speed critical applications. In this paper we propose a new circuit structure called NCMOS, which employs a low Vt NMOS transistor in place of the bipolar transistor, and provides significantly higher speed than a conventional CMOS design. This is realized at the cost of only one extra masking step, compared to 4-5 extra masks for a full BiCMOS process.<
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