IS31IO7328-QFLS4-TR

Overview

The IS31IO7328-QFLS4-TR is a multi-function I/O driver featuring an I²C serial interface and eight configurable ports. It includes four push-pull and four open-drain outputs, supporting operation from 2.4V to 5.5V with a typical standby current of 0.3μA. The device operates within a temperature range of -40°C to +125°C and utilizes a QFN-16 package. Each port can be independently configured as input or output, with transition detection capabilities on all inputs.

Feature Summary

• Supports two selectable I²C slave addresses via AD pin configuration
• Provides latching interrupt output (INTB) for monitoring input state changes
• Features low standby current consumption during idle interface periods
• Includes integral power-on-reset circuitry for reliable initialization

Applications

• Cell phones
• Notebooks
• Servers
• Automotive systems

Procurement Notes

Verify the specific ordering suffix matches the required reel quantity and packaging format. Confirm that the component meets RoHS and Halogen-Free compliance standards for your manufacturing process. Ensure the industrial temperature rating aligns with your operational environment requirements before finalizing procurement.

Selection Notes

Select this component when a compact I/O expander with low power consumption is needed. The dual address capability allows multiple devices on a single bus. Verify that the open-drain sink current capacity meets load requirements. Consider the QFN-16 thermal pad connection for proper heat dissipation in high-density designs.

Part Context

This part belongs to the IS31IO7328 series of multi-function I/O drivers manufactured by Lumissil Microsystems. It is designed for applications requiring flexible digital I/O expansion over a standard two-wire serial interface. The device integrates transition detection and interrupt functionality to reduce host processor overhead.

Replacement Considerations

Check datasheets for alternative I/O expanders with compatible I²C addressing and similar voltage ranges. Verify pinout compatibility if direct replacement is intended. Ensure equivalent thermal performance and package dimensions are available from other suppliers.