TCA9511ADGKR Texas Instruments - Yeehing Electronics

2-bit bidirectional 2.3- to 5.5-V hot swappable 400-kHz I2C/SMBus buffer

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Specifications

For more information, please refer to datasheet

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More Information

The TCA9511A is a hot-swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock lines. Control circuitry prevents the backplane-side I2C lines (in) from being connected to the card-side I2C lines (out) until a stop command or bus idle condition occurs on the backplane without bus contention on the card. When the connection is made, this device provides bidirectional buffering, keeping the backplane and card capacitances isolated. During insertion, the SDA and SCL lines are pre-charged to 1 V to minimize the current required to charge the parasitic capacitance of the device.