Diodes Incorporated
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16-bit I2C General Purpose IO Expander with Interrupt, Reset. AEC-Q100 Grade 2.


The DIODES™ PI4IOE5V6416RQ is a 16-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I2C-bus interface.

The device provides a simple solution when additional I/Os are needed while keeping interconnections to a minimum; such as in sensors, push buttons, keypads, and battery-powered mobile ap­plications for interfacing.


  • Operation power supply voltage from 1.65V to 5.5V
  • Allows bidirectional voltage-level translation and GPIO expansion between:
    • 8/2.5/3.3/5V SCL/SDA and 1.8/2.5/3.3/5V Port
  • Low standby current consumption:
    • 5μA typical at 5V VDD
    • 1μA typical at 3.3V VDD
  • 400kHz I2C-bus interface
  • Compliant with the I2C-bus fast and standard modes
  • Programmable push-pull/open-drain output stages
  • Programmable output drive strength and pull-up/down resistor
  • Power-on reset all register contents to default
  • Active LOW open-drain interrupt output
  • Active LOW reset input to reset I2C bus only while register contents remain unchanged
  • Latch-up tested (exceeds 100mA)
  • Support AEC-Q100 (Grade 2)
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The DIODES™ PI4IOE5V6416RQ is suitable for automotive applications requiring specific change control; the part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/
  • Packaging (Pb-free & Green):
    • 24-Pin TSSOP (L)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Automotive
Analog or Digital? Digital
Voltage 1.65/5.5V
Single Ended Channels 16
Signal Type Single Ended
Configuration 16 bits
Ambient or Junction Temperature (°C) -40 to 105

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Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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