An I2C-bus compatible device when functioning as a clock master comprises a transient active pull-up I2C (“TAP-I2C”) logic module having high side driver transistors, e.g., P-channel field effect transistors (FETs), coupled between a positive supply voltage and respective serial data (“SDA”)...http://www.google.fr/patents/US7859307?utm_source=gb-gplus-shareBrevet US7859307 - High speed transient active pull-up I2C
