TCA9517 - Texas Instruments

TCA9517 Level-Shifting I2C Bus Repeater

The TCA9517 is a bidirectional buffer with level shifting capabilities for I2C and SMBus systems. It provides bidirectional voltage-level translation (uptranslation/down-translation) between low voltages (down to 0.9 V) and higher voltages (2.7 V to 5.5 V) in mixed-mode applications. This device enables I2C and SMBus systems to be extended without degradatio.

Features

•1 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 JES.