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PCA9546 - 4-channel I2C switch with reset

General Description

The PCA9546 is a quad bi-directional translating switch controlled by the I2C-bus.

The SCL/SDA upstream pair fans out to four downstream pairs, or channels.

Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable Control Register.

Key Features

  • 1-of-4 bi-directional translating switches.
  • I2C interface logic; compatible with SMBus standards.
  • Active LOW Reset Input.
  • 3 address pins allowing up to 8 devices on the I2C-bus.
  • Channel selection via I2C-bus, in any combination.
  • Power.
  • up with all switch channels deselected.
  • Low RdsON switches.
  • Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and.
  • No glitch on power-up.
  • Supports hot ins.

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📁 Similar Datasheet

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Other Datasheets by NXP Semiconductors

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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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INTEGRATED CIRCUITS PCA9546 4-channel I2C switch with reset Product data sheet Supersedes data of 2002 Feb 19 2004 Sep 30 Philips Semiconductors Philips Semiconductors Product data sheet 4-channel I2C switch with reset PCA9546 DESCRIPTION The PCA9546 is a quad bi-directional translating switch controlled by the I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable Control Register. An active-LOW reset input allows the PCA9546 to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state.