The TMUX821x devices have 1.8 V logic compatible control for all logic control inputs. 1.8 V logic level inputs allows the TMUX821x to interface with processors that have lower logic I/O rails and eliminates the need for an external translator, which saves both space and BOM cost. For more information on 1.8 V logic implementations, refer to Simplifying Design with 1.8 V logic Muxes and Switches.