Here is a complete list of Analog Devices' I²C bus buffers and rise time accelerators. The devices are very similar. The major differences are most easily noted by looking at the Comments column on this slide. The LTC4300 and LTC4301 are popular baseline models. The LTC4302 then adds GPIOs and addressability. The LTC4303 and LTC4304 are ultra-rugged bus buffers that feature stuck bus protection and ±15kV ESD. The LTC4307 and LTC4309 provide low offset voltages to make cascading of bus buffers easier. For new designs that require bus supplies as low as 0.9 V, the LTC4308 provides a negative offset voltage. This will make it easy to interface with legacy equipment operating off of higher supply voltages. The LTC4310 provides hot-swappable I²C isolation using inexpensive Ethernet transformers or capacitors. The LTC4311 is a dedicated rise time accelerator. Finally, the LTC4313 and LTC4315 are Analog Devices' latest buffers. They feature wide level translation capabilities, high noise margins, selectable rise time acceleration, and stuck bus protection.