Hai,
Iam using 8 channel analog MUX SN74HC4851, in a temperature reading application.
Here there are 24 NTC thermister to read with one MCU analog pin , using 3 MUX.
In my circuit all channel selection pins and common output pin s are connected parallel, and MUX selection is done by ENABLE pin separately, and read all MUX sequently.
My problem is , suppose channel 1 of MUX 1 is HIGH, and all other channels LOW practically..But corresponding pin of MUX 2 also shows high.I use proper delay and all other precautions, but no use. Individual MUX gives good values in all channels
Please give me the error possibilities.
