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TCA9544A Description

The TCA9544A is a 4-channel, bidirectional translating I2C Muliplexer. The master SCL/SDA signal pair is directed to one of the four channels of slave devices, SC0/SD0-SC3/SD3. Four interrupt inputs (INT3 INT0), one for each of the downstream pairs, are provided.

TCA9544A Key Features

  • 1 1-of-4 Bidirectional Translating Switches
  • I2C Bus and SMBus patible
  • Four Active-Low Interrupt Inputs
  • Active-Low Interrupt Output
  • Three Address Pins, Allowing up to Eight
  • Channel Selection Via I2C Bus
  • Power-Up With All Switch Channels Deselected
  • Low RON Switches
  • Allows Voltage-Level Translation Between 1.8-V
  • No Glitch on Power-Up