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AEC-Q100 Grade 2 Low-voltage translating 16-bit I2C-bus I/O Expander

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The PI4IOESV6416Q is a 16-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the l2C-bus interface.

It provides a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery-powered mobile applications for interfacing to sensors, push buttons, keypad, etc.

It can operate from 1.65 V to 5.5 V on the GPIO-port side and 1.65V to 5.5V on the SDA/SCL side. This allows the PI4IOE5V6416Q to interface with next generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power.

The bidirectional voltage-level translation in the PI4IOE5V6416Q is provided through VDD (I2C_bus). VDD (I2C_bus) should be connected to the VDD of the external SCL/SDA lines. The voltage level on the GPIO-port of the PI4IOE5V6416Q is determined by VDD(P).

At power on, the I/Os are configured as inputs; however, the system master can enable the I/Os as either inputs or outputs by writing to the I/O direction bits. The data for each input or output is kept in the corresponding Input or Output register. All registers can be read by the system master.

PI4IOESV6416Q has open-drain interrupt (INT) output pin that goes LOW when the input state of a GPIO-port changes from the input-state default register value. The device also has an interrupt masking feature by which the user can mask the interrupt from an individual GPIO port.


  • Operation power supply voltage from 1.65V to 5.5V
  • Allows bidirectional voltage-level translation and GPIO expansion between:
    • 1.8/2.5/3.3/5V SCL/SDA and 1.8/2.5/3.3/5V Port
  • Low standby current consumption:
    • 1.5 µA typical at 5 V VDD
    • 1 µA typical at 3.3 V 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
  • Active LOW open-drain interrupt output
  • Active LOW reset input
  • Latch-up tested (exceeds 100 mA)
  • Support AEC-Q100 (Grade 2)
  • Totally Lead-Free & Full RoHS Compliant 
  • Halogen and Antimony Free. "Green" Device 
  • The PI4IOE5V6416Q 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)



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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Technical Documents

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

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2586 2022-06-08 2022-09-08 Qualified Additional Wafer Fab Backend IMD Material and Process - Automotive