60 µA supply — the number that defines the fit
The MAX1940EEE+ draws 60 µA from the supply rail in normal operation. For a USB peripheral that stays connected and powered while the host is in sleep or suspend, that quiescent current sits well below the 500 µA budget the USB 2.0 spec allocates for the device-side pull-up and control logic — no need for a separate load switch to disconnect the part when the bus is idle.
Supply range and application — USB VBUS direct
The 4 V floor covers the minimum VBUS voltage at the far end of a 5-meter cable with a 100 mA load — the spec's margin is tight enough that a series Schottky in the VBUS path would pull the input below the dropout. Applications are listed as USB and peripherals, meaning the switch handles the hot-plug inrush and overcurrent detection for downstream ports or device-side power routing.
Temperature grade and package — board-fit check
The 1.27 mm pitch on the SSOP-16 layout fans out on a two-layer board without via-in-pad.