A 16 × 16 bits Multiplier has been achieved using a 0.5 μm double metal CMOS technology. This function is made of 8340 transistors and has an active area of 1.04 mm2. At 3.3 V, the typical multiplication time is about 7.5 ns, while the fastest one achieved is 6.8 ns. The multiplier is based on Booth's algorithm and has a special final adder with an arborescent carry propagation.