TCA4311

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TCA4311 SCPS173A – DECEMBER 2008 – REVISED JUNE 2014 TCA4311 Hot Swappable 2-Wire Bus Buffers Not Recommended for New Designs 1 Features 1 Operating Power-Supply Voltage Range of 2.7-V to 5.5-V Supports Bidirectional Data Transfer of I2C Bus Signals SDA and SCL Lines Are Buffered Which Increases Fanout 1-V Precharge on All SDA and SCL Lines Prevents Corruption During Live Board Insertion and Removal From Backplane SDA and SCL Input Lines Are Isolated From Outputs Accommodates Standard Mode and Fast Mode I2C Devices Applications Include Hot Board Insertion and Bus Extension Low ICC Chip Disable of <1 μA READY Open-Drain Output Supports Clock Stretching, Arbitration, and Synchronization Powered-Off High-Impedance I2C Pins Open-Drain I2C Pins Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 8000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) 2 Description The TCA4311 is a hot swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock busses. Control circuitry prevents the backplane from being connected to the card until a stop command or bus idle occurs on the backplane without bus contention on the card. When the connection is made, this device provides bidirectional buffering, keeping the backplane and card ca...