Tsc-407 Datasheet [repack] -

: High signal integrity for audio or precision measurement paths. Versatility

(Note: Exact specifications can vary based on the specific custom version ordered from the factory. Below are the typical operating parameters.) tsc-407 datasheet

Never exceed these values, even transiently. Overvoltage on an analog input can latch up the CMOS structure. : High signal integrity for audio or precision

Always keep the latest datasheet open during schematic capture and PCB layout. When in doubt, consult the manufacturer's application notes for further guidance on using the TSC-407 in your specific design. tsc-407 datasheet

And he would never, ever turn the voltage past 4.2V again.