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TCA9511A Datasheet

Part Number TCA9511A
Manufacturers Texas Instruments
Logo Texas Instruments
Description Hot Swappable I2C Bus and SMBus Buffer
Datasheet TCA9511A DatasheetTCA9511A Datasheet (PDF)

www.ti.com TCA9511A SCPS272C – OCTOBER 2019 – REVISED JATNCUAAR9Y512012A1 SCPS272C – OCTOBER 2019 – REVISED JANUARY 2021 TCA9511A Hot Swappable I2C Bus and SMBus Buffer 1 Features • Supports bidirectional data transfer of I2C bus signals • Operating power-supply voltage range of 2.3 V to 5.5 V • TA ambient air temperature range of -40 °C to 125 °C • 1-V Precharge on all SDA and SCL lines prevents corruption during live insertion • Accommodates standard mode and fast mode I2C devices • Supports.

  TCA9511A   TCA9511A






Hot Swappable I2C Bus and SMBus Buffer

www.ti.com TCA9511A SCPS272C – OCTOBER 2019 – REVISED JATNCUAAR9Y512012A1 SCPS272C – OCTOBER 2019 – REVISED JANUARY 2021 TCA9511A Hot Swappable I2C Bus and SMBus Buffer 1 Features • Supports bidirectional data transfer of I2C bus signals • Operating power-supply voltage range of 2.3 V to 5.5 V • TA ambient air temperature range of -40 °C to 125 °C • 1-V Precharge on all SDA and SCL lines prevents corruption during live insertion • Accommodates standard mode and fast mode I2C devices • Supports clock stretching, arbitration and synchronization • Powered-off high-impedance I2C pins 2 Applications • Servers • Enterprise Switching • Telecom switching equipment • Base stations • Industrial automation equipment 3 Description 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. When the I2C bus is idle, the TCA9511A can be put into shutdown mode by setting the EN pin low, reducing power consumption.


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