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PCA9547 Datasheet 8-Channel I2C Bus Multiplexer

Manufacturer: NXP Semiconductors

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General Description

The PCA9547 is an octal bidirectional translating multiplexer controlled by the I2C-bus.

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

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

Overview

PCA9547 8-channel I2C-bus multiplexer with reset Rev.

4 — 1 April 2014 Product data sheet 1.

Key Features

  • 1-of-8 bidirectional translating multiplexer.
  • I2C-bus 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, one channel at a time.
  • Power-up with all channels deselected except Channel 0 which is connected.
  • Low Ron multiplexers.
  • 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 in.

More Datasheets from NXP Semiconductors

Part Number Description
PCA9540 2-channel I2C multiplexer
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PCA9542 2-channel I2C multiplexer and interrupt controller
PCA9543 2-channel I2C switch
PCA9544 4-channel I2C multiplexer and interrupt controller
PCA9544A 4-channel I2C-bus multiplexer
PCA9544ABS 4-channel I2C-bus multiplexer
PCA9544AD 4-channel I2C-bus multiplexer
PCA9544APW 4-channel I2C-bus multiplexer
PCA9545 4-channel I2C switch with interrupt logic and reset