PI4IOE5V9539LE

I/o Expanders Overview

The PI4IOE5V9539LE is a 16-bit I2C-bus and SMBus low power I/O port with interrupt and reset, manufactured by Diodes Incorporated. It operates on a supply voltage ranging from 2.3 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features 16 general-purpose I/Os with 5V tolerance, an active LOW interrupt output, and an active LOW reset input. It consumes 135 µA in operating mode and includes ESD protection rated at 4 kV HBM. The component is housed in a TSSOP-24 package and functions within a temperature range of -40 °C to +85 °C.

I/o Expanders Feature Summary

• Provides 16 bits of General Purpose parallel Input/Output expansion for I2C-bus/SMBus applications
• Includes polarity inversion registers and individual I/O configuration capabilities
• Features open-drain interrupt output activated upon input state changes
• Incorporates noise filters on SCL/SDA inputs and power-on reset functionality

I/o Expanders Applications

• ACPI power switches
• Sensors
• Push buttons
• LEDs
• Fans

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'L' confirms the TSSOP-24 package variant when sourcing this component. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to integration into final assemblies.

I/o Expanders Selection Notes

Select this model when a 16-bit GPIO expander compatible with standard I2C and SMBus protocols is required. Ensure the system design accommodates the 2.3 V to 5.5 V operating voltage range and requires 5V tolerant I/Os for interfacing with higher voltage logic levels.

I/o Expanders Part Context

This component belongs to the PI4IOE series of I/O expanders produced by Diodes Incorporated. It serves as a hardware solution for expanding microcontroller I/O resources via serial communication interfaces, specifically designed for low power consumption and compact packaging requirements in embedded systems.

I/o Expanders Replacement Considerations

The PI4IOE5V9539LEX is the tape and reel version of this same functional device. Other variants like PI4IOE5V9539ZDEX offer identical electrical performance but utilize a TQFN-24 package instead of TSSOP-24.