A Sub-1 V Bootstrap Pass-Transistor Logic

Koji FUJII  Takakuni DOUSEKI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.4   pp.604-611
Publication Date: 2003/04/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on High-Performance, Low-Power System LSIs and Related Technologies)
Category: Circuit Design
Keyword: 
pass-transistor logic,  bootstrap,  low voltage,  adder,  

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Summary: 
A pass-transistor logic is enhanced with a bootstrap configuration for sub-1 V operation at high speed and low power. The bootstrap configuration drives the output to full swing, which accelerates the signal transition and cuts off the short-circuit current of subsequent CMOS logic gates. The asynchronous or synchronous timing sequence of the input (drain) and the control (gate) signals ensures bootstrap operation. A 1-b arithmetic logic unit (ALU) and an EXNOR gate built with the bootstrap pass-transistor logic outperforms those built with other types of pass-transistor logic. An experimental 16-b pass-transistor adder operates down to 0.4 V with a delay time of 4.2 ns and a power dissipation of 2.8 µ W/MHz at 0.5 V.