General Description
The MAX7318 2-wire-interfaced expander provides 16-bit parallel input/output (I/O) port expansion for SMBus™ and I2C applications. The MAX7318 consists of input port registers, output port registers, polarity inversion registers, configuration registers, and an I2C-compatible serial interface logic compatible with SMBus. The sys tem master can invert the MAX7318 input data by writing to the active-high polarity inversion register.

FEATUREs
♦ 400kbps I2C-Compatible Serial Interface
♦ 2V to 5.5V Operation
♦ 5.5V Overvoltage-Tolerant I/Os
♦ Supports Hot Insertion
♦ 16 I/O Pins that Default to Inputs on Power-Up
♦ 100kΩ Pullup on Each I/O
♦ Open-Drain Interrupt Output (INT)
♦ Noise Filter on SCL/SDA Inputs
♦ 64 Slave ID Addresses Available
♦ Low Standby Current (5.4µA typ)
♦ Polarity Inversion
♦ 4mm ✕ 4mm, 0.8mm Thin QFN Package
♦ -40°C to +125°C Operation

APPLICATIONs
   Servers
   RAID Systems
   Industrial Control
   Medical Equipment
   PLCs
   Instrumentation and Test Measurement