PCF8574
1FEATURES•Operatingsupplyvoltage2.5to6V•Lowstandbycurrentc***umptionof10µAmaximum•I2Ctoparallelportexpander•Open-draininterruptoutput•8-bitremoteI/OportfortheI2C-bus•Compatiblewithmostmicrocontrollers•LatchedoutputswithhighcurrentdrivecapabilityfordirectlydrivingLEDs•Addressby3ha***areaddresspinsforuseofupto8devices(upto16withPCF8574A)•)