8 Gb/s 8:1 multiplexer and 1:8 demultiplexer IC's using GaAs DCFLcircuit |
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| Authors: | Tanaka K Shikata M Kimura T Sano Y Akiyama M |
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| Affiliation: | Oki Electr. Ind., Co. Ltd., Tokyo; |
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| Abstract: | High-speed 8:1 multiplexer and 1:8 demultiplexer ICs composed of GaAs direct-coupled FET logic (DCFL) have been designed and fabricated. The ICs were designed with a tree-type architecture and using memory-cell-type flip-flops (MCFFs). Self-aligned GaAs MESFETs with a gate length of 0.5 μm were used in these ICs. The propagation delay time of the DCFL inverter was 19.0 ps/gate. Both ICs operated up to 8 Gb/s with power dissipations of 1.5 W for the multiplexer and 1.9 W for the demultiplexer at a single power supply voltage of 2.0 V. These ICs are applicable for multigigabit lightwave communication systems |
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