TCA9517DGKR

Description
The TCA9517 is an I2C and SMBus bidirectional buffer with level changing capabilities. In mixed-mode applications, it allows bidirectional voltage-level translation (uptranslation/downtranslation) between low voltages (down to 0.9 V) and higher voltages (2.7 V to 5.5 V). This device allows I2C and SMBus systems to be extended without performance deterioration, even during level shifting.  
The TCA9517 buffers both the serial data (SDA) and serial clock (SCL) signals on the I2C bus, allowing two buses with bus capacitances of up to 400 pF to be linked in an I2C application.  
There are two categories of drivers on the TCA9517: A-side drivers and B-side drivers. Even when the device is unpowered (VCCB and/or VCCA = 0 V), all inputs and I/Os are overvoltage tolerant to 5.5 V.  
Features
• Two-Channel Bidirectional Buffer
• I2C Bus and SMBus Compatible
• Operating Supply Voltage Range of 0.9 V to 5.5 V on A-side
• Operating Supply Voltage Range of 2.7 V to 5.5 V on B-side
• Voltage-Level Translation From 0.9 V - 5.5 V to 2.7 V - 5.5 V
• Footprint and Functional Replacement for PCA9515B
• Active-High Repeater-Enable Input
• Open-Drain I2C I/O
• 5.5-V Tolerant I2C and Enable Input Support Mixed-Mode Signal Operation
• Accommodates Standard Mode and Fast Mode I2C Devices and Multiple Masters
• High-Impedance I2C Pins When Powered-Off
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22– 5500 V Human-Body Model (A114-A)– 200 V Machine Model (A115-A)– 1000 V Charged-Device Model (C101)   Applications
• Servers
• Routers (Telecom Switching Equipment)
• Industrial Equipment
• Products with Many I2C Slaves and/or Long PCB Traces