ISL3300x I2C Bus Buffers Renesas Electronics ISL3300x I2C Bus Buffer with Rise Time Accelerators provides the buffering necessary to extend the bus capacitance beyond the 400pF maximum specified by the I2C specification. Renesas ISL3300x Buffers feature rise time accelerator circuitry to reduce power consumption from passive bus pull-up resistors and improve data-rate performance. The devices also include hot-swap circuitry to prevent corruption of the data and clock lines when I2C devices are plugged into a live backplane. The ISL33002 and ISL33003 add a level translation for mixed supply voltage applications. The ISL3300x I2C Bus Buffers operate at supply voltages from +2.3V to +5.5V at a temperature range of -40°C to +85°C.