The IXP3114/3104 is an I3C Basic 1:4 General I/O Expander with integrated Temperature Sensor used for various motherboard applications. The IXP3114/3104 has four configurable I/O pins that can be configured as either input only, output only or input/output on a local interface. The GPIO pin is a CMOS push-pull buffer or open-drain with a configurable pull-up resistor. The voltage levels for either open drain or push/pull are independently configurable.

The IXP family I/O expander is typically used when there is a need for additional GPIO input and output in an application.


  • 1:4 General Purpose Input/Output Expander (GPIO)
  • Two-wire programmable I²C or I3C bus serial interface
  • Single device load on the Host bus
  • Up to 12.5MHz transfer rate
  • Single 1.8V power supply input
  • 1.0V VLDO output at VIO pin
  • Supports 1.0V, 1.1V, and 1.2V push-pull IO levels
  • Supports 1.0V, 1.1V, 1.2V, 1.8V, 2.5V, and 3.3V open-drain I/O levels
  • Integrated Temperature Sensor; 0.5°C accuracy with 0.25°C resolution
  • Bus reset function
  • Packet Error Check (PEC) function
  • Parity Error Check function
  • Up to 8 unique addresses
  • Programmable I²C, I3C bus addressing scheme
  • In-Band Interrupt (IBI)
  • 9-contact thermally enhanced DFN package
  • Temperature: Industrial range of -40°C to 125°C

tuneProduct Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
Preview DFN 8 0 to 125°C Reel


Title language Type Format File Size Date
Datasheets & Errata
star IXP31x4 Short-Form Datasheet Datasheet - Short-form PDF 35 KB
Memory Multiplexer Family Overview Overview PDF 807 KB