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PI4IOE5V9520 (Obsolete)

2-bits IO expander

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The PI4IOE5V9520 provides 2 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus applications.  It includes the features such as higher driving capability, 5V tolerance, lower power supply, individual I/O configuration, and smaller packaging. It provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
The PI4IOE5V9520 consists of a 2-bit quasi-bidirectional port and an I2C-bus interface. The PI4IOE5V9520 open-drain interrupt output (INT) is activated by any updated of the port inputs and is used to indicate the system master that the port inputs has changed. The power-on reset sets the registers to their default values and initializes the device state machine.  The Reset pin (Reset) causes the same reset/initialization to occur without de-powering the device


  • Operation power supply voltage from 2.3V to 5.5V
  • 2-bit I2C-bus GPIO with interrupt and reset
  • 5V tolerant I/Os
  • Active Low interrupt output
  • Active Low reset input
  • Low current consumption
  • 0Hz to 1MHz clock frequency
  • Noise filter on SCL/SDA inputs
  • Power-on reset, software reset
  • ESD protection (4KV HBM and 1KV CDM)
  • Package offered: UQFN 1.6x1.6-8

Product Specifications

Product Parameters

Analog or Digital? Digital
Configuration 2 bits
Signal Type Single Ended
Single Ended Channels 2
Ambient or Junction Temperature (°C) -40 to 85
Voltage 2.2V/5V

Technical Documents

Recommended Soldering Techniques


Orderable Part Number Status Package Environmental Compliance Packing Request Samples
Qty. Carrier
PI4IOE5V9520XTEX Obsolete U-QFN1616-8 TPGP 3000 T&R

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free