TCA4311A

Product Folder Order Now Technical Documents Tools & Software Support & Community TCA4311A SCPS226C – JANUARY 2011 – REVISED AUGUST 2018 TCA4311A Hot Swappable 2-Wire Bus Buffers 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 Improved Noise Immunity 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 Applications Servers Routers (Telecom Switching Equipment) Base Stations Industrial Automation 3 Description The TCA4311A 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 th...