PI4IOE5V9554ALEX

Interface: I2C and SMBus (compatible with various microcontrollers)
Number of I/O Pins: 8 (bidirectional, can be configured as inputs or outputs)
Operating Voltage: 2.3V to 5.5V (wide range for different power sources)
Output Drive Current: 20mA per pin (sufficient for driving LEDs, relays, and other devices)
Output Leakage Current: 1μA (minimal power consumption when idling)
Package: TSSOP (compact, surface-mount package for easy integration)

Key Features
Interrupt output pin for event notification
Level translation for interfacing with 3.3V and 5V logic levels
Individual output pin configuration (open-drain or push-pull)
Programmable pull-up/pull-down resistors for each pin

Applications
Expanding microcontroller I/O: Adding more buttons, LEDs, sensors, or other peripherals to your project
Level shifting: Connecting devices with different logic levels (e.g., 3.3V and 5V)
Port multiplexing: Sharing a single I2C bus with multiple I/O expanders for even more I/O capability
Remote I/O control: Controlling devices located far from the main controller

Benefits
Saves microcontroller pins: frees up valuable on-chip pins for other tasks
Simplifies circuit design: reduces the number of discrete components needed
Flexible configuration: customizable I/O pin functions and behavior
Compact size: ideal for space-constrained projects