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

Product Details

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Block Diagram

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Block diagram: PCA9665BS, PCA9665D, PCA9665N, PCA9665PW


  • 1 MHz I²C-bus interface
  • Compliant with the I²C-bus Fast-mode and Standard-mode
  • 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 reset input
  • 64 programmable target addresses using 3 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

Target Applications

  • LED signs and displays
  • Servers
  • Industrial control
  • Medical equipment
  • PLCs
  • Cellular telephones
  • Gaming machines
  • Instrumentation and test measurement


Quick reference to our documentation types.

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Design Resources

Design Files

3 design files

  • Models

    PCA9671 IBIS model

  • Symbols and Footprints

    PCA9671PW-TSSOP24-CAD Symbol and PCB Footprint – BXL File

  • Symbols and Footprints

    PCA9671BS-HVQFN24-CAD Symbol and PCB Footprint – BXL File


3 hardware offerings

Engineering Services

1 engineering service

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