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In Very Large Scale Integration (VLSI), interconnect design has become a supreme issue in high speed ICs. With the decreased feature size of CMOS circuits, on-chip interconnect now dominates both circuit delay and power consumption. An eminent technique known as repeater/buffer insertion is used in long interconnections to reduce delay in VLSI circuits. This paper deals with some distinct low power alternative circuits in buffer insertion technique and it proposes two new techniques: Dynamic Threshold Swing Limited (DTSL) and High Dynamic Threshold Swing Limited (HDTSL). The DTSL uses Dynamic Threshold MOSFET configuration. In this gate is tied to the body and it limits the output swing. High Dynamic Threshold Swing Limited (HDTSL) also uses the same configuration along with a high threshold voltage(high-Vth). The simulation results are performed in Cadence virtuoso environment tool using 45nm technology. By simulating and comparing these various repeater circuits along with the proposed circuits it is analyzed that there is trade off among power, delay and Power Delay Product and the 34.66% of power is reduced by using the highVth in HDTSL when compared to DTSL.

A Novel Low Power High Dynamic Threshold Swing Limited Repeater Insertion for On-Chip Interconnects