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PCA9544ABS Datasheet 4-channel I2c-bus Multiplexer

Manufacturer: NXP Semiconductors

Overview: PCA9544A 4-channel I2C-bus multiplexer with interrupt logic Rev. 5 — 23 April 2014 Product data sheet 1.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The PCA9544A is a 1-of-4 bidirectional translating multiplexer, controlled via the I2C-bus.

The SCL/SDA upstream pair fans out to four 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.

Key Features

  • 1-of-4 bidirectional translating multiplexer.
  • I2C-bus interface logic; compatible with SMBus.
  • 4 active LOW interrupt inputs.
  • Active LOW interrupt output.
  • 3 address pins allowing up to 8 devices on the I2C-bus.
  • 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 st.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Texas Instruments Logo PCA9544A Low Voltage 4-Channel I2C and SMBus Multiplexer Texas Instruments

More Datasheets from NXP Semiconductors

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PCA9544 4-channel I2C multiplexer and interrupt controller
PCA9540 2-channel I2C multiplexer
PCA9540B 2-channel I2C-bus multiplexer
PCA9542 2-channel I2C multiplexer and interrupt controller
PCA9543 2-channel I2C switch
PCA9545 4-channel I2C switch with interrupt logic and reset
PCA9545A 4-channel I2C switch

PCA9544ABS Distributor