PI4IOE5V9554ALEX

I/o Expanders Overview

The PI4IOE5V9554ALEX is an 8-bit I2C-bus and SMBus general-purpose input/output (GPIO) expander manufactured by Diodes Incorporated. It operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies from 0 Hz to 400 kHz. The device features five-volt tolerant I/Os, an active low interrupt output, and polarity inversion capabilities. It is housed in a TSSOP-16 package with a maximum power dissipation of 400 mW and functions across a temperature range of -40°C to +85°C.

I/o Expanders Feature Summary

• Provides eight bits of GPIO expansion for I2C-bus and SMBus applications
• Features hardware-selectable address pins allowing multiple devices on the same bus
• Includes an open-drain interrupt output that activates upon input state changes
• Offers noise filtering on SCL and SDA inputs for signal integrity

I/o Expanders Applications

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

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'ALEX' corresponds to the required fixed I2C address configuration, as the 'A' variant differs from the standard model. Confirm the 'X' suffix indicates tape and reel packaging rather than tube or cut tape formats. Ensure the component meets RoHS 3 compliance requirements for your manufacturing process.

I/o Expanders Selection Notes

Select this component when expanding I/O capacity via I2C or SMBus interfaces is required. The 5V tolerance allows direct interfacing with legacy systems without level shifting. Consider the PI4IOE5V9554A variant if additional address combinations are needed alongside other devices on the bus.

I/o Expanders Part Context

This part belongs to the PIO4IO series of I/O expanders designed for low-power embedded systems. It serves as a peripheral interface solution for microcontrollers requiring additional digital lines. The device simplifies system design by consolidating multiple GPIO functions into a single serial-controlled chip.

I/o Expanders Replacement Considerations

PCA9654EDTR2G is documented as a similar replacement option.