TMUX1309A: vs TMUX1309, what is the difference?

Hello Nicholas,

The difference between the 1309/8 and 1309a/08a is that the a version is optimized for high impedance load systems.

This section of the datasheet gives a idea of the difference but the main difference is that the a version has lower charge injection which can help improve settling time in some systems.

Please let me know if this helps and I am happy to help further if needed

Regards,

Kameron