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PCA9540B Datasheet 2-channel I2C-bus multiplexer

Manufacturer: NXP Semiconductors

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General Description

The PCA9540B is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus.

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

Only one SCx/SDx channel is selected at a time, determined by the contents of the programmable control register.

Overview

PCA9540B 2-channel I2C-bus multiplexer Rev.

7.1 — 19 January 2018 Product data sheet 1.

Key Features

  • 1-of-2 bidirectional translating multiplexer.
  • I2C-bus interface logic; compatible with SMBus standards.
  • Channel selection via I2C-bus.
  • Power-up with all multiplexer channels deselected.
  • Low Ron switches.
  • Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses.
  • No glitch on power-up.
  • Supports hot insertion.
  • Low standby current.
  • Operating power supply voltage range of 2.3 V to 5.5 V.
  • 5 V tolerant inputs.
  • 0 Hz to 400 kH.

More Datasheets from NXP Semiconductors

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