Area-efficient high-speed carry chain

作者:Amin A A*
来源:Electronics Letters, 2007, 43(23): 1258-1260.
DOI:10.1049/el:20071613

摘要

An improved carry chain circuit with carry-skip capability is described. The carry-skip logic allows an arbitrarily long carry chain without the need for intermediate buffers for signal restoration, leading to an implementation that is both fast and area-efficient. The chain can flexibly accommodate technology-imposed maximum depth of NMOS transistor pull-down stack.