PCA9517A Overview
The PCA9517A is an I2C−bus repeater that provides level shifting between low voltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) for I2C−bus or SMBus applications. While retaining all the operating modes.
PCA9517A Key Features
- 2 Channel, Bidirectional Buffer Isolates Capacitance and Allows
- Footprint and Functional Replacement for PCA9515/15A
- I2C-bus and SMBus patible
- Active HIGH Repeater Enable
- Open-Drain Inputs/Outputs
- Lock-up Free Operation
- Supports Arbitration and Clock Stretching Across the Repeater, and
- I2C and SMBus SCL Clock Frequency up to 1 MHz (The maximum
- Powered-Off High-Impedance I2C-bus Pins
- A Side Operating Supply Voltage Range of 0.9 V to 5.5 V

