NEW STATIC MULTIOUTPUT CARRY LOOKAHEAD CMOS ADDERS

The paper presents new compact static 4-bit CMOS adders based on itera tive shared transistor carry lookahead (CLA) units. The CLA units have a regular, fast, simple and multioutput static structure with a small number of transistors. Designs made in 1.0 mu m CMOS technology show that these adders reduce the silicon area and improve the timing and d ynamic power performance compared with similar static adders.