Discussion and Future Work

Even though Bipolar Junction Transistor (BJT) output driver current drive capabilities are better than its counterpart CMOS output drivers, they dissipate more power. For high level integration Multi-Chip Modules (MCMs), power-delay product is an important performance metric in system performance evaluation. With advancement in CMOS process technology in the last decade, high level of integration can be achieved by using CMOS technology compared to BJT technology. However, one of the trade-off is between speed and integration. With the advancements in scaled(Leff <0.75µm) CMOS technology, preliminary trade-off studies have shown that possible technology map for high performance computers will move from BJT to BiCMOS and eventually to CMOS technology [11.1].