Part PCA9544
Description 4-channel I2C multiplexer and interrupt controller
Manufacturer NXP Semiconductors
Size 77.18 KB
NXP Semiconductors
PCA9544

Overview

The PCA9544 is a 1-of-4 bi-directional translating multiplexer, controlled via the I2C bus. The SCL/SDA upstream pair fans out to four SCx/SDx downstream pairs, or channels.

  • 1-of-4 bi-directional translating multiplexer
  • Channel selection via I2C bus
  • Operating supply voltage 2.5 to 3.6 V
  • Operating temperature range 0°C to 70°C
  • Power-up with all multiplexer channels deselected
  • 3 address pins, allowing up to 8 devices on the I2C bus
  • Low on resistance