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PCA9548A - 8-channel I2C switch

General Description

The PCA9548A is an octal bi-directional translating switch controlled via the I2C-bus.

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

Key Features

  • s s s s s s s s s s s s s s s 1-of-8 bi-directional translating switches 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, in any combination Power-up with all switch 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 stand-by current Operating power supply voltage range of.

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📁 Similar Datasheet

Part Number Description Manufacturer
PCA9548A Low Voltage 8-Channel I2C Switch Texas Instruments
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Other Datasheets by NXP Semiconductors

Part Number Description
PCA9548 8-channel I2C switch with reset
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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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PCA9548A 8-channel I2C switch with reset Rev. 01 — 15 April 2005 Product data sheet 1. General description The PCA9548A is an octal bi-directional translating switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to eight 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 PCA9548A to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-bus state machine and causes all the channels to be deselected as does the internal Power-on reset function.