PI4IOE5V9538LEX

I/o Expanders Overview

The PI4IOE5V9538LEX is an 8-bit I2C-bus and SMBus low power I/O port manufactured by Diodes Incorporated. It provides general-purpose parallel input/output expansion with interrupt and reset capabilities. The device operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies from 0 Hz to 400 kHz. It features 5V tolerant I/Os, active low interrupt output, and active low reset input. The component includes polarity inversion registers and noise filters on SCL/SDA inputs. It is housed in a TSSOP-16 package and offers ESD protection rated at 4 kV HBM and 1 kV CDM.

I/o Expanders Feature Summary

• Provides 8 bits of general-purpose parallel input/output expansion for I2C-bus and SMBus applications.
• Features 5V tolerant I/Os with individual configuration options and lower power supply requirements.
• Includes an open-drain active low interrupt output that activates upon input state changes.
• Supports hardware address selection via A0 and A1 pins to allow multiple devices on the same bus.

I/o Expanders Applications

• ACPI power switches
• Sensor interfaces
• Push button detection
• LED control circuits

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'LEX' corresponds to the TSSOP-16 tape and reel packaging format as defined in the manufacturer's ordering information. Confirm RoHS compliance and lead-free status requirements against project specifications before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when an 8-bit I/O expander with interrupt functionality is required for I2C or SMBus systems. Ensure the operating voltage falls between 2.3 V and 5.5 V. Consider the TSSOP-16 package constraints and verify that the application can accommodate the open-drain interrupt output configuration.

I/o Expanders Part Context

This part belongs to the PI4IOE5V9538 series of low power I/O expanders. The 'L' suffix denotes the TSSOP-16 package variant, while 'X' indicates tape and reel packaging. It shares core electrical characteristics with other variants like the ZY package version but differs in physical footprint and mounting style.

I/o Expanders Replacement Considerations

The PI4IOE5V9538ZYEX serves as a functional alternative using a TQFN-16 package. Verify pin compatibility and thermal dissipation requirements when substituting packages. No other direct cross-model replacements are documented in the official datasheet.