LTC4304CMS#PBF

LTC4304 is a hot swappable 2-wire bus buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. When a connection is made, it provides bidirectional buffering, keeping the backplane and card capacitances isolated. If SDAOUT or SCLOUT is low for ≥30ms (typ), it automatically breaks the data and clock bus connection and FAULT will pull low. At this time the device automatically generates upto 16 clock pulses on SCLOUT in an attempt to free the bus. A connection will be enabled automatically when the bus becomes free. A logic low on the ACC input enables the device’s rise-time accelerators. A logic high on ACC disables the rise-time accelerators, which allows SDA and SCL bus pull-up voltages below VCC. During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances. It is used in applications such as hot board insertion, servers, capacitance buffer/bus extender, RAID systems etc.