High-Performance Low-Power Selective Precharge Schemes for Address Decoders

Two novel address decoder schemes using selective precharging are presented and analyzed in this paper. These schemes, the AND-NOR and sense amplifier (sense-amp) decoders, are compared to the NOR decoder using 90-nm CMOS technology. The sense-amp decoder dissipates between 29.5% and 50.1% and the AND-NOR decoder dissipates between 73.7% and 104.4% of the energy dissipated by the NOR decoder. The delay of the Sense-Amp decoder is 69.2% and the delay of the AND-NOR decoder is 80.8% of the nor decoder delay.