PI4IOE5V9673ZDEX

I/o Expanders Overview

The PI4IOE5V9673ZDEX is a remote 16-bit I/O expander designed for Fm+ I2C-bus applications. It features an interrupt output and a dedicated reset input, allowing flexible system control. The device operates within a supply voltage range of 2.3 V to 5.5 V and supports a maximum clock frequency of 400 kHz. All 16 ports are independently configurable as inputs or outputs without direction control signals. At power-on, the I/Os default to HIGH states, enabling immediate use as inputs. The component is housed in a 24-contact Very Thin Quad Flat No-Lead (TQFN) package.

I/o Expanders Feature Summary

• Supports Fm+ I2C-bus communication with interrupt generation capabilities
• Features a dedicated hardware reset input pin for system initialization
• Provides 16 independent quasi-bidirectional I/O ports
• Includes strong pull-up circuitry for fast rising edges on heavily loaded outputs

I/o Expanders Applications

• Remote I/O expansion in embedded systems
• General-purpose digital input/output interfacing
• High current-drive load applications

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'ZDEX' against official Diodes Incorporated documentation to confirm the TQFN-24 package and tape/reel packaging configuration. Ensure that the selected variant meets all environmental compliance requirements, including RoHS 3 standards, before finalizing procurement specifications.

I/o Expanders Selection Notes

Select this component when a 16-bit I/O expander with Fm+ speed support and a hardware reset function is required. Confirm that the operating voltage range of 2.3 V to 5.5 V aligns with the target system's power rails. Verify that the 24-TQFN package dimensions fit the available PCB footprint constraints.

I/o Expanders Part Context

This part belongs to the PI4IOE5V series of I/O expanders manufactured by Diodes Incorporated. It is specifically engineered for I2C-based architectures requiring extended digital I/O capabilities. The ZD suffix indicates the 24-contact Very Thin Quad Flat No-Lead package type used for surface mount assembly.

I/o Expanders Replacement Considerations

Consult the manufacturer's datasheet for officially confirmed substitute part numbers. Do not assume functional equivalence with other models in the family without verifying pinout compatibility and electrical parameter alignment.

I/o Expanders FAQ

What is the default state of the I/O pins upon power-on?

All I/O pins are set to HIGH at power-on, allowing them to be immediately used as inputs.

How is the device reset via the I2C bus?

A software reset can be initiated by sending a General Call address sequence followed by a specific command byte over the I2C bus.

Can the I/O ports be used simultaneously as inputs and outputs?

Yes, the ports are quasi-bidirectional and can be configured as either inputs or outputs via write commands without needing separate direction control signals.