I'm using a LM2232 as a buffer to monitor 2 28vdc signals. The device has failed and with no input 1 channel has 1.5v on the output and the other channel has 0.13v.
Both circuits consists on a 10:1 voltage divider (88.7k and 10k) feeding the input, with the device configured as a voltage follower and it's output going to an ADC input of a MCU. Vdd = 3.3v
Question is what could have caused this failure and how do I protect against it?