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MAX7310：2-Wire-Interfaced 8-Bit I/O Port Expander with Reset

2-Wire-Interfaced 8-Bit I/O Port Expander with Reset can Sink Up to 30mA per Port for SMBus™-Compatible and I²C-Compatible Applications

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.

Key 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

MAX7310: Typical Operating Circuit Applications/Uses Cellular Handsets Desktop Computers: Motherboards GPIO Industrial Control Industrial Displays Instrumentation and Test Measurement Medical Equipment RAID Systems Servers White LED Drivers

DataSheet

Parametrics

Quality and Environmental Data

• MAX7310.pdf

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