Introducing New High-Speed Multioutput Carry Look-Ahead Adders using 8-bit Manchester Carry Chain (MCC) Adder in Multioutput Domino CMOS Logic

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Year:
2014
Type of Publication:
Article
Keywords:
Carry Chains, Carry Look Ahead CLA Adders, Manchester Carry Chain MCC, Multioutput Domino Logic
Authors:
Rajeshwari Gujamagadi; Yogesh Khandagre
Journal:
IJAIM
Volume:
3
Number:
2
Pages:
63-65
Month:
September
Abstract:
Adders are the critical parts of processor circuits. There is a great demand for high performance processors, which increases the need for improving the performance and functionality of adders. Carry look-ahead (CLA) adder’s principle remains dominant in High-speed adder architectures, since the carry delay can be improved by calculating each stage in parallel. This is done by using an 8-bit Manchester carry chain (MCC) adder block in multioutput domino CMOS logic. MCC is the most common dynamic (domino) CLA adder architecture in VLSI. The even and odd carries of this adder are computed in parallel by two independent 4-bit carry chains. Implementation of wider adders based on the use of 8-bit adder module improves the operating speed compared to adders based on the standard 4-bit MCC adder module. Proposed design technique can be used for the implementation of 8-, 16-, 32-, and 64-bit adders in multioutput domino logic.
Full text: IJAIM_343_Final.pdf

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