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PCA9543 - 2-channel I2C switch

Datasheet Summary

Description

The PCA9543 is a bi-directional translating switch, controlled by the I2C-bus.

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

Any individual SCx/SDx channels or combination of channels can be selected, determined by the contents of the programmable control register.

Features

  • 1-of-2 bi-directional translating switches.
  • I2C interface logic; compatible with SMBus standards.
  • 2 Active LOW Interrupt Inputs.
  • Active LOW Interrupt Output.
  • Active LOW Reset Input.
  • 2 address pins allowing up to 4 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.

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Datasheet preview – PCA9543

Datasheet Details

Part number PCA9543
Manufacturer NXP
File Size 120.79 KB
Description 2-channel I2C switch
Datasheet download datasheet PCA9543 Datasheet
Additional preview pages of the PCA9543 datasheet.

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Full PDF Text Transcription

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INTEGRATED CIRCUITS PCA9543 2-channel I2C switch with interrupt logic and reset Product data sheet Supersedes data of 2002 Feb 19 2004 Oct 01 Philips Semiconductors Philips Semiconductors Product data sheet 2-channel I2C switch with interrupt logic and reset PCA9543 FEATURES • 1-of-2 bi-directional translating switches • I2C interface logic; compatible with SMBus standards • 2 Active LOW Interrupt Inputs • Active LOW Interrupt Output • Active LOW Reset Input • 2 address pins allowing up to 4 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.
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