I have 3x1.5V (4.5V) button cells powering a 2V LDO VReg which in turn powers a PIC12. The PIC12 is capable of sourcing 25mA and will be interfacing with the SEL pin of the TMUX1101.
The TMUX's datasheet states the absolute maximum input current required by the SEL pin is 30mA, but that it has a max leakage current of 0.06uA.
The TMUX will be powered directly from the 4.5V battery pack and will be switching on a load drawing ~25mA for 3ms before switching off for at least 100ms. This pattern repeats.
The application needs to be as battery friendly as possible so the possibility that the SEL pin could sink 30mA scares me. I'm also unsure how well the batteries would handle outputting ~55mA, even for 3ms.
My questions are as follows, in order of importance:
What is the typical SEL pin input current? Is this just the leakage current (listed as 0.005uA at 5V)?
Under what conditions does the SEL pin require 30mA?
//The datasheet can be found here. The absolute maximum ratings are at the top of page four and the SEL pin characteristics at 5V are near the bottom of page five.
I'm sure I'm just failing to understand something about the datasheet. Thank you for taking the time to read this.