Abstract
In this paper, we describe parallel dynamic logic (PDL) which exhibits high speed without charge sharing problem. PDL uses only parallel-connected transistors for fast logic evaluation and is a good candidate for high-speed low-voltage operation. It has less back-bias effect compared to other logic styles, which use stacked transistors. Furthermore, PDL needs no signal ordering or tapering. PDL with speed-enhanced skewed static logic renders straightforward logic synthesis without the usual area penalty due to logic duplication. Our experimental results on two 32-bit carry lookahead adders using 0.25-μm CMOS technology show that PDL with speed-enhanced skewed static (SSS) logic reduces the delay over clock-delayed(CD)-domino by 15%-27% and the power-delay product by 20%-37%.
Original language | English |
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Pages (from-to) | 434-439 |
Number of pages | 6 |
Journal | IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing |
Volume | 49 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2002 Jun |
Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received July 2, 2000; revised May 28, 2002. This work was supported in part by Semiconductor Research Corp. under Grant SRC 98-HJ-641. This paper was recommended by Associate Editor X. Sung.
Keywords
- Adder
- Dynamic logic
- Low-power
- Skewed logic
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering