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TCA9801 - Level-Translating I2C Bus Buffer/Repeater

Datasheet Summary

Description

The TCA9801 is a dual-channel bidirectional buffer intended for I2C bus and SMBus/PMBus systems.

It provides bidirectional level shifting (up-translation and down-translation) between low voltages (down to 0.8 V) and higher voltages (1.65 V to 3.6 V).

Features

  • 1 Two-channel bidirectional buffer.
  • Integrated current source on B-side, requires no external B-side resistors.
  • Ultra-low power consumption.
  • No static-voltage offset, low VOL.
  • I2C bus and SMBus compatible.
  • Operating supply voltage range of 0.8 V to 3.6 V on A-side.
  • Operating supply voltage range of 1.65 V to 3.6 V on B-side.
  • Active-high repeater enable input.
  • Powered-off high impedance I2C bus pins on A- side.

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Datasheet Details

Part number TCA9801
Manufacturer Texas Instruments
File Size 943.92 KB
Description Level-Translating I2C Bus Buffer/Repeater
Datasheet download datasheet TCA9801 Datasheet
Additional preview pages of the TCA9801 datasheet.

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Full PDF Text Transcription

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Product Folder Order Now Technical Documents Tools & Software Support & Community TCA9801 SCPS265B – MARCH 2017 – REVISED FEBRUARY 2020 TCA9801 Level-Translating I2C Bus Buffer/Repeater 1 Features •1 Two-channel bidirectional buffer • Integrated current source on B-side, requires no external B-side resistors • Ultra-low power consumption • No static-voltage offset, low VOL • I2C bus and SMBus compatible • Operating supply voltage range of 0.8 V to 3.6 V on A-side • Operating supply voltage range of 1.65 V to 3.6 V on B-side • Active-high repeater enable input • Powered-off high impedance I2C bus pins on A- side • Powered-off back-power protection I2C bus pins • Support for clock stretching and multiple master arbitration • Family of current source options from 0.
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