TCA9509

Product Folder Order Now Technical Documents Tools & Software Support & Community TCA9509 SCPS225C – AUGUST 2011 – REVISED DECEMBER 2017 TCA9509 Level-Translating I2C and SMBUS Bus Repeater 1 Features 1 Two-Channel Bidirectional Buffer I2C Bus and SMBus Compatible Operating Supply Voltage Range of 2.7 V to 5.5 V on B side Operating Voltage Range of 0.9 V to 5.5 V on A-Side Voltage-Level Translation From 0.9 V to 5.5 V and 2.7 V to 5.5 V Active-High Repeater-Enable Input Requires No External Pullup Resistors on Lower-Voltage Port-A Open-Drain I2C I/O 5.5-V Tolerant I2C and Enable Input Support Mixed-Mode Signal Operation Lockup-Free Operation Accommodates Standard Mode and Fast Mode I2C Devices and Multiple Masters Supports Arbitration and Clock Stretching Across Repeater Powered-Off High-Impedance I2C Bus Pins Supports 400-kHz Fast I2C Bus Operating Speeds Available in – 1.6-mm × 1.6-mm, 0.4-mm height, 0.5-mm Pitch QFN Package – 3-mm × 3-mm Industry Standard MSOP Package Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 1000-V Charged-Device Model (C101) 2 Applications Servers Routers (Telecom Switching Equipment) Industrial Equipment Products with many I2C slaves and/or long PCB Traces 3 Description This TCA9509 integrated circuit is an I2C bus/SMBus Repeater for use in I2C/SMBus systems. It can also provide bidirectional voltage-level translation (uptr...