使用I2C缓冲在1.8 V和3.3 V之间水平切换1.8 V和3.3 V Application Note 1637 Level Shifting Between 1.8V and 3.3V Using I2C Buffers As the trend in low voltage microcontrollers migrates to 1.8V For example, Intersil's ISL33002 and ISL33003 (FN7560) are logic levels, I2C bus systems will need logic level shifting to two channel I2C buffers with rise time accelerators and logic communicate with 3.3V I2C slave devices. Without level level shifting. Their minimum operating supply voltage is 2.3V shifting, the output logic levels of mixed voltage devices are so they cannot directly level shift down to 1.8V. Using a not capable of properly drivin……