PI4IOE5V9535ZDEX

I/o Expanders Overview

The PI4IOE5V9535ZDEX is a 16-bit I2C-bus and SMBus I/O port manufactured by Diodes Incorporated. It provides General Purpose parallel Input/Output expansion for system masters. The device operates with a power supply voltage ranging from 2.3 V to 5.5 V and supports clock frequencies up to 400 kHz. It features 16 configurable I/O pins, an active LOW interrupt output, and noise filters on SCL/SDA inputs. The ZDEX suffix indicates the TQFN-24 package. Supply current is typically 40 μA at 5.5 V and 10 μA at 2.3 V.

I/o Expanders Feature Summary

• Provides 16 bits of GPIO expansion via I2C/SMBus interface
• Features 5V tolerant I/Os with high driving capability
• Includes polarity inversion registers for flexible logic configuration
• Generates active LOW interrupts upon input state changes

I/o Expanders Applications

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

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'ZDEX' corresponds to the TQFN-24 package variant when sourcing components. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to final procurement decisions.

I/o Expanders Selection Notes

Select this component when 16-bit I/O expansion is required within a 2.3 V to 5.5 V operating range. Choose the ZDEX package for applications requiring the TQFN-24 form factor. Ensure the design accommodates the open-drain interrupt output and utilizes external pull-up resistors if necessary for proper signal integrity.

I/o Expanders Part Context

This part belongs to the PI4IOE5V95xx series of I/O expanders. It is functionally identical to the PI4IOE5V9555 but lacks internal I/O pull-up resistors, resulting in lower power consumption when outputs are held low. The ZDEX suffix specifically denotes the TQFN-24 package option.

I/o Expanders Replacement Considerations

The PI4IOE5V9555LEX serves as a functional equivalent with identical electrical characteristics, differing only by the inclusion of internal pull-up resistors. Verify package compatibility between TSSOP-24 and TQFN-24 variants during substitution.