I/O Port Expander 16-Pin QSOP

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 register, a configuration register, a bus timeout register, and an SMBus/I²C-compatible serial interface. The system master can invert the MAX7310 input data by writing to the active-high polarity inversion register. The system master can enable or disable bus timeout by writing to the bus timeout register. Any of the eight I/O ports can be configured as input or output. An active-low reset input sets the eight I/Os as inputs. Three address-select pins configure one of 56 slave ID addresses. The MAX7310 is available in 16-pin thin QFN, TSSOP, and QSOP packages and is specified over the -40°C to +125°C automotive temperature range.

• 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