US Patent 7180338 High performance low power multiple-level-switching output drivers

Long existing performance, noise, and power consumption problems of prior art output drivers are solved by using n-channel transistors as pull up transistors and p-channel transistors as pull down transistors for high performance output drivers. Output drivers of the present invention can be fully compatible with HSTL or SSTL interfaces without using termination resistors. High resolution switching applications are also made possible without consuming much power. Output drivers of the present invention provide excellent solutions to support high performance interface while consuming much lower power.