LTC4315IMS#TRPBF

LTC4315IMS#TRPBF is a hot-swappable 2-wire bus buffer that provides bidirectional buffering, while maintaining a low offset voltage and high noise margin up to 0.3VCC. The high noise margin allows the device to be interoperable with devices that drive a high VOL (<gt/>0.4V) and allows multiple LTC4315s to be cascaded. During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances. Connection is established between the input and output after ENABLE is asserted high and a stop bit or bus idle condition has been detected on the SDA and SCL pins. Up to 16 clock pulses are subsequently generated to free the stuck bus. A three state active-low ACC pin enables input and output side rise time accelerators of various strengths. It is used in applications such as capacitance buffers/bus extender, live board insertion, telecommunications systems including ATCA, level translation, PMBus, servers.

• Bidirectional buffer increases fanout, selectable rise time accelerator current
• Compatible with non-compliant I²C devices that drive a high VOL
• Prevents SDA and SCL corruption during live board insertion and removal from backplane
• Stuck bus disconnect and recovery, compatible with I²C, I²C fast mode and SMBus
• ±4KV human body model ESD ruggedness, high impedance SDA, SCL pins when unpowered
• Input supply voltage range from 2.9V to 5.5V
• Input supply current is 8.1mA typical at (VENABLE = VCC = VCC2 = 5.5V, VSDAIN,SCLIN = 0V)
• Input capacitance is 10pF maximum at (SDA, SCL pins)
• Operating temperature range from -40°C to 85°C
• 12-lead plastic MSOP package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party