General Description
The MAX7310 provides 8-bit parallel input/output port expansion for SMBus™-compatible and I2C-compatible applications. The MAX7310 consists of an input port register, an output port register, a polarity inversion reg ister, a configuration register, a bus timeout register, and an SMBus/I2C-compatible serial interface. The sys tem master can invert the MAX7310 input data by writ ing to the active-high polarity inversion register. The system master can enable or disable bus timeout by writing to the bus timeout register.

Features
♦ 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
   Servers
   RAID Systems
   Industrial Control
   Medical Equipment
   Instrumentation, Test Measurement