AN883 Datasheet (Silicon Laboratories) - LOW-COST I2C LEVEL TRANSLATOR

AN883, LOW-COST I2C LEVEL TRANSLATOR

AN883 LOW-COST I2C LEVEL TRANSLATOR 1.

Introduction This applications note discusses a low-cost circuit for I2C level translation.

This circuit was developed for the Si701x, Si702x, and Si703x humidity sensors but will work in many applications.

This circuit provides I2C level translation from a higher voltage supply, such as 5 V, to a lower voltage, supply such as 1.8 or 3.3 V.

In addition, the optional emitter follower circuit provides a low-voltage power supply rail from the higher 5 V supp