Multi Domino Double Manchester Carry Chain Adders for High Speed Circuits

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Provided by: International Journal of Advance Research in Science and Engineering (IJARSE)
Topic: Hardware
Format: PDF
The carry look-ahead adders are designed till now by using standard 4 bit Manchester carry chain. Due to its limited carry chain length, the carries of the adders are computed using 4 bit carry chain. This leads to slow down the operation. A high speed 8 bit Manchester Carry Chain (MCC) adder in multi output domino CMOS logic is designed in this paper. Due to its limited carry chain length this high speed MCC uses 2 separate 4-bit MCC. The 2 MCC namely odd carry chain and even carry chain are computed in parallel to increase the speed of the operation.
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