PI4IOE5V9554LE

I/o Expanders Overview

The PI4IOE5V9554LE 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 three hardware address pins allowing up to eight devices on the same bus.

I/o Expanders Feature Summary

• Provides 8 bits of GPIO expansion for I2C-bus and SMBus applications
• Features 5V tolerant I/Os with individual configuration options
• Includes an active LOW open-drain interrupt output for state change detection
• Supports polarity inversion registers to modify input port data logic

I/o Expanders Applications

• ACPI power switches
• Sensor interfaces
• Push button inputs
• LED control circuits
• Fan speed monitoring

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'L' corresponds to the TSSOP-16 package variant when sourcing components. Confirm that the 'E' suffix indicates lead-free and green material compliance as defined by the manufacturer. Ensure the 'X' suffix matches the required tape and reel packaging format for automated assembly processes.

I/o Expanders Selection Notes

Select this component when expanding parallel I/O lines via serial communication is required. The 5V tolerance allows direct interfacing with legacy systems without level shifting. Consider the PI4IOE5V9554A variant if additional address combinations are needed to support more than eight devices on a single bus segment.

I/o Expanders Part Context

This part belongs to the PIO4IO series of interface ICs designed for low-power I/O expansion. It shares functional similarities with other members like the PI4IOE5V9554ALEX but differs in fixed I2C address settings. The device integrates internal pull-ups and power-on reset logic to simplify system initialization.

I/o Expanders Replacement Considerations

PCA9654EDTR2G is listed as a similar replacement option by distributors.