 
  CY8C9540A (Cypress Semiconductor)
20 - 40 and 60 Bit I/O Expander
        CY8C9520A CY8C9540A CY8C9560A
20-, 40-, and 60-Bit I/O Expander with EEPROM
Features
■ I2C interface logic electrically compatible with SMBus
■ Up to
    
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