SI BIPOLAR 14 GB S 1/4-DEMULTIPLEXER IC FOR SYSTEM APPLICATIONS/

A 1:4-demultiplexer IC meeting the essential requirements for lightwav e communication systems has been designed based on a 21 GHz f(T) 0.4 m u m Si bipolar process. The circuit provides features such as bit-rota tion control, clock enable control, outputs aligned in time, and phase aligner for clock signals. It operates up to 14 Gb/s (14 GHz) viith a phase margin of greater than or equal to 250 degrees. The power consu mption is 2 W with a -4.5 V supply. 1:16-demultiplexer operation is de monstrated on the basis of 1:4-demultiplexer IC's at 10 Gb/s.