PI4IOE5V9557LEX

I/o Expanders Overview

The PI4IOE5V9557LEX is an 8-bit I2C-bus and SMBus general-purpose parallel input/output (GPIO) expander manufactured by Diodes Incorporated. It operates with a supply voltage ranging from 2.3V to 5.5V and supports clock frequencies from 0Hz to 400kHz. The device features 5V tolerant I/Os, individual I/O configuration via a control register, and polarity inversion capabilities. It includes an active LOW reset pin and power-on reset functionality. The component is housed in a 16-pin TSSOP package.

I/o Expanders Feature Summary

• Provides 8 bits of GPIO expansion for I2C-bus and SMBus applications
• Includes hardware address pins allowing up to eight devices on the same bus
• Features noise filters on SCL/SDA inputs and ESD protection

I/o Expanders Applications

• ACPI power switches
• Sensors
• Push buttons
• LEDs
• Fans

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'X' indicates tape and reel packaging when sourcing this component. Confirm that the manufacturer's documentation aligns with the required RoHS compliance standards and lead-free specifications before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when expanding I/O capacity for systems requiring 5V tolerance and low power consumption. Ensure the design accommodates the open-drain output structure and utilizes external pull-up resistors if necessary for proper signal integrity on the I2C bus lines.

I/o Expanders Part Context

This part belongs to the PI4IOE5V95xx series of I/O expanders from Diodes Incorporated. It shares functional similarities with other members like the PI4IOE5V9555ZDEX but differs in package type and pin count. The LEX suffix specifically denotes the 16-pin TSSOP package with tape and reel delivery format.

I/o Expanders Replacement Considerations

The PI4IOE5V9557LE serves as a tube-packaged alternative to the LEX variant. Verify pin compatibility and electrical characteristics before substituting. No other direct cross-model replacements are confirmed in the provided documentation.