PI4IOE5V96224ZLEX

I/o Expanders Overview

The PI4IOE5V96224ZLEX is a 24-bit I/O expander from Diodes Incorporated, utilizing an I²C bus interface. It operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies up to 1 MHz. The device features 24 quasi-bidirectional ports with latched outputs capable of 25 mA sink current per pin and a total package sink capability of 600 mA. It includes an active LOW open-drain interrupt output and offers 64 programmable slave addresses via three address pins. The component is housed in a 32-pin TQFN package.

I/o Expanders Feature Summary

• Provides high drive capability with 25 mA per I/O pin and 600 mA total package sink capacity for direct LED driving.
• Supports Fast-mode Plus I²C communication at speeds up to 1 MHz with 5.0 V tolerant inputs.
• Features an active LOW open-drain interrupt line that signals microcontrollers on port state changes without continuous polling.
• Includes internal Power-On Reset logic to initialize all I/Os as inputs upon power application.

I/o Expanders Applications

• Remote I/O expansion for microcontroller systems requiring additional digital input/output lines.
• Direct driving of indicator LEDs or low-power loads through high-current latched outputs.
• Complex embedded interfaces where multiple devices share the I²C bus using programmable addressing.

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'ZLEX' corresponds to the Tape/Reel packaging format and lead-free compliance when sourcing. Confirm that the selected variant matches the required 32-pin TQFN mechanical dimensions for your PCB layout. Ensure the supplier provides documentation confirming RoHS and halogen-free status as specified by the manufacturer.

I/o Expanders Selection Notes

Select this component when a system requires more than 16 general-purpose I/O lines accessible via a standard two-wire serial interface. Consider the 600 mA total sink limit if designing circuits that may activate multiple high-current outputs simultaneously. Verify that the host microcontroller can support the required I²C clock speed and address configuration logic.

I/o Expanders Part Context

This part belongs to the PI4IOE5V96 series of I/O expanders designed for versatile connectivity in compact electronic designs. It shares architectural similarities with other members of the family but distinguishes itself through its 24-bit port count and specific high-drive output characteristics suitable for direct peripheral control.

I/o Expanders Replacement Considerations

Check datasheets for other PI4IOE5V96 series variants to confirm pin compatibility and electrical specifications before substitution. Ensure any alternative device supports the same 1 MHz I²C speed and 600 mA total sink current requirements.

I/o Expanders FAQ

How are the 64 slave addresses configured?

The device uses three address pins (AD2, AD1, AD0) to select one of 64 unique slave addresses. These pins do not have internal pull-ups and must be connected to appropriate logic levels.

What happens to the I/O states after a Power-On Reset?

Upon power-up, the internal Power-On Reset (POR) circuit holds the device in reset until VCC reaches the threshold. Once released, all 24 I/Os are initialized as inputs.

Can the INT pin be used to wake a microcontroller?

Yes, the INT pin is an active LOW open-drain output that generates an interrupt signal whenever there is a rising or falling edge on any of the port inputs, allowing the microcontroller to detect changes without polling.