Remote 16-Bit I/O Expander for Fm+ I²C-Bus with Interrupt and Reset

Product Details

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Block Diagram

PCA9673 Block Diagram


Key Features

  • 1 MHz I2C-bus interface
  • Compliant with the I2C-bus fast and standard modes
  • SDA with 30 mA sink capability for 4000 pF buses
  • 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
  • 16-bit remote I/O pins that default to inputs at power-up
  • Latched outputs with 25 mA sink capability for directly driving LEDs
  • Total package sink capability of 400 mA
  • Active LOW open-drain interrupt output
  • 16 programmable target addresses using 2 address pins
  • Readable device ID (manufacturer, device type and revision)
  • Low standby current
  • -40 °C to +85 °C operation
  • 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, DHVQFN24


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Design Resources

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Design Files

3 design files

  • Models

    PCA9673 IBIS model

  • Symbols and Footprints

    PCA9673PW-TSSOP24-CAD Symbol and PCB Footprint – BXL File

  • Symbols and Footprints

    PCA9673BS-HVQFN24-CAD Symbol and PCB Footprint – BXL File


2 hardware offerings


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