标签: i2c缓冲

使用I2C缓冲在1.8V和3.3V之间水平切换1.8V和3.3VApplicationNote1637LevelShiftingBetween1.8Vand3.3VUsingI2CBuffersAsthetrendinlowvoltagemicrocontrollersmigratesto1.8VForexample,Intersil'sISL33002andISL33003(FN7560)arelogiclevels,I2CbussystemswillneedlogiclevelshiftingtotwochannelI2Cbufferswithrisetimeacceleratorsandlogiccommunicatewith3.3VI2Cslavedevices.Withoutlevellevelshifting.Theirminimumoperatingsupplyvoltageis2.3Vshifting,theoutputlogiclevelsofmixedvoltagedevicesaresotheycannotdirectlylevelshiftdownto1.8V.Usinganotcapableofproperlydrivin……