Maxim Integrated I/O Expander Serial I2C TSSOP, MAX7310AUE+

400kHz 2-Wire Interface
2.3V to 5.5V Operation
Low Standby Current (1.7μA typ)
Bus Timeout for Lock-Up-Free Operation
56 Slave ID Addresses
Polarity Inversion
Eight I/O Pins that Default to Inputs on Power-Up
5V Tolerant Open-Drain Output on I/O0
4mm x 4mm, 0.8mm Thin QFN Package
-40°C to +125°C Operation
Applications
Cellular Handsets
Desktop Computers: Motherboards
GPIO
Industrial Control
Industrial Displays
Instrumentation and Test Measurement
Medical Equipment
RAID Systems
Servers
White LED Drivers