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19-2698; Rev 3; 2/05
2-Wire-Interfaced 8-Bit I/O Port Expander with Reset
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 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 may be configured as input or output. An active-low reset input sets the eight I/Os as inputs.