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TCA6424 - Low-Voltage 24-Bit I2C and SMBus I/O Expander

General Description

This 24-bit I/O expander for the two-line bidirectional bus (I2C) is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL) and serial data (SDA)].

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

Key Features

  • 1 Operating Power-Supply Voltage Range of 1.65 V to 5.5 V.
  • Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between:.
  • 1.8-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port.
  • 2.5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port.
  • 3.3-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port.
  • 5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port.
  • I2C to Parallel Port Expander.
  • Low Standby Current Consumption of 1 μA.

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Other Datasheets by Texas Instruments

Part Number Description
TCA6424A Low-Voltage 24-Bit I2C and SMBus I/O Expander
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TCA6408A Low-Voltage 8-Bit I2C and SMBus I/O Expander
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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 Sample & Buy Technical Documents Tools & Software Support & Community TCA6424 SCPS175B – NOVEMBER 2007 – REVISED JUNE 2014 TCA6424 Low-Voltage 24-Bit I2C AND SMBus I/O Expander With Interrupt Output, Reset, and Configuration Registers Not Recommended for New Designs 1 Features •1 Operating Power-Supply Voltage Range of 1.65 V to 5.5 V • Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between: – 1.8-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port – 2.5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port – 3.3-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port – 5-V SCL/SDA and 1.8-V, 2.5-V, 3.