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TCA7408 - Low-Voltage 8-Bit I2C and SMBus I/O Expander

General Description

TCA7408 is an 8-bit I/O expander for the two-line bidirectional bus (I2C) and is designed to provide general-purpose remote I/O expansion through the I2C interface.

The major benefit of this device is its wide VCC range.

Key Features

  • 1 Operating Power-Supply Voltage Range of 1.65 to 3.6 V.
  • Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between 1.8-V, 2.5-V, 3.3-V GPIO Port and.
  • 1.8-V SCL/SDA.
  • 2.5-V SCL/SDA.
  • 3.3-V SCL/SDA.
  • 5-V SCL/SDA.
  • Standby Current Consumption of < 2 µA at 1.8 V.
  • Active Current Consumption of:.
  • < 2 µA at 1.8-V 100-kHz Clock.
  • < 5 µA at 1.8-V 400-kHz Clock.
  • 100-kHz, 400-kHz Fast Mode.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Product Folder Order Now Technical Documents Tools & Software Support & Community TCA7408 SCPS235D – NOVEMBER 2011 – REVISED APRIL 2018 TCA7408 Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output, RESET Input, I/O Direction Registers, and Programmable Pull-Up/Pull-Down 1 Features •1 Operating Power-Supply Voltage Range of 1.65 to 3.6 V • Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between 1.8-V, 2.5-V, 3.3-V GPIO Port and – 1.8-V SCL/SDA – 2.5-V SCL/SDA – 3.3-V SCL/SDA – 5-V SCL/SDA • Standby Current Consumption of < 2 µA at 1.8 V • Active Current Consumption of: – < 2 µA at 1.8-V 100-kHz Clock – < 5 µA at 1.