Eight-Channel I²C-Bus Switch with Reset

See product image

Product Details

Block Diagram

Choose a diagram:

PCA9548A Block Diagram

PCA9548A Block Diagram

PCA9548ABS, PCA9548AD, PCA9548APW Block Diagram

 PCA9548ABS, PCA9548AD, PCA9548APW Block Diagram


Key Features

  • 1-of-8 bidirectional translating switches
  • I²C-bus interface logic; compatible with SMBus standards
  • Active LOW reset input
  • Three address pins allowing up to eight 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 standby current
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • 6 V tolerant inputs
  • 0 Hz to 400 kHz clock frequency
  • ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

Packages Offered

  • SO24, TSSOP24, HVQFN24

Product Longevity Program

  • This product is included in NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The PCA9548APW is included in the 15-year program

Part numbers include: PCA9548ABS, PCA9548AD, PCA9548APW.


Quick reference to our documentation types.

1-5 of 16 documents

Show All

Design Files

Quick reference to our design files types.

5 design files


Quick reference to our board types.

3 hardware offerings


What do you need help with?