SN74HC4851-Q1: schematic design

Oh Ok I see, 

The SN74HC4851-Q1 main feature is called injection current control which can help limit the error you see on the output of your system due to current from other diasbled signal paths/non selected signal paths  affecting your results on the output.

 Check out this FAQ on injection current control 

e2e.ti.com/.../faq-how-does-injection-current-control-work-in-ti-analog-multiplexers-switches

Also please put a decoupling capacitor on the supply pin 

The de-coupling capacitor is used to help suppress high frequency noise that may be present due to the power supply itself or noise conducted due to the power supply traces. It is used to provide a stable power supply for the IC. 

If you do not use the de-coupling capacitor it could cause the power supply to not be as stable and cause unexpected results during operation due to voltage fluctuations and noise on the power supply pin. The bypass cap shunts this noise to ground, so for a more stable multiplexer in the system I'd strongly recommend using the bypass capacitor. 

Also here is a link to the device datasheet.

 https://www.ti.com/lit/ds/symlink/sn74hc4851-q1.pdf?ts=1677257002549&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FSN74HC4851-Q1

Thanks and Regards,

Kameron