DIFFERENTIAL, MIXED SWING, TRISTATE DRIVER CIRCUIT FOR HIGH PERFORMANCE AND LOW POWER ON-CHIP INTERCONNECTS

摘要

A driver to provide low voltage swings on a bus with fast switching times, the driver comprising two pairs of pullup and pulldown nMOSFETs (225, 245, 230 and 250), each pair operated in complementary fashion to each other, each pair with a high voltage rail (Vdd2-Vss1) at a smaller voltage than the data input logic HIHG voltage, and where each substrate of the nMOSFETs are biased so as to reduce their threshold voltages.