PI4IOE5V9522UEX

I/o Expanders Overview

The PI4IOE5V9522UEX is a 4-bit I/O expander in an MSOP-10 package. It operates on a supply voltage of 2.3V to 5.5V with a maximum clock frequency of 1MHz. The device features 5V tolerant I/Os, an active low interrupt output, and an active low reset input. Static characteristics include a standby current of 0.25μA to 1μA and an operating supply current up to 175μA. Dynamic performance supports Standard, Fast, and Fast Mode Plus I2C protocols.

I/o Expanders Feature Summary

• Provides 4-bit GPIO expansion for I2C-bus and SMBus applications
• Features 5V tolerant inputs and outputs for mixed-voltage systems
• Includes an open-drain interrupt output triggered by input state changes
• Supports polarity inversion and individual I/O configuration via registers

I/o Expanders Applications

• ACPI power switch control
• Sensor interface expansion
• Push button scanning
• LED driver control

I/o Expanders Procurement Notes

Verify the datasheet revision PT0556-1 dated 02/15/16 when reviewing technical specifications. Confirm that the UEX suffix indicates the MSOP-10L package in tape and reel format. Ensure compliance with RoHS standards and verify the Pb-free and Green material status before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component for designs requiring minimal I/O expansion over serial interfaces. It is suitable for battery-powered applications due to its low standby current consumption. Verify that the system voltage falls within the 2.3V to 5.5V range and that the available I2C bus speed meets the required data transfer rates.

I/o Expanders Part Context

This part belongs to the PI4IOE5V95xx series of low-power I/O expanders manufactured by Diodes Incorporated (formerly Pericom). It shares functional similarities with other members of the family but is distinguished by its specific 4-bit capacity and MSOP-10 packaging constraints.

I/o Expanders Replacement Considerations

Direct pin-to-pin replacements are not explicitly listed in the provided documentation. Evaluate alternative 4-bit I/O expanders from the same manufacturer or other vendors, ensuring compatibility with I2C/SMBus protocols and matching voltage tolerance requirements.