PCF8575 expander equivalent, remote16-bit i2c and smbus i/o expander.
*1 I2C to Parallel-Port Expander
* Open-Drain Interrupt Output
* Low Standby-Current Consumption of 10 μA Max
* Compatible With Most Microcontrollers
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* Telecom Shelters: Filter Units
* Servers
* Routers (Telecom Switching Equipment)
* Personal Computers .
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