Three-rail supervisor with adjustable threshold
The fixed thresholds are 2.93 V and 4.55 V, with the third channel adjustable via an external resistor divider, giving flexibility for non-standard rails like 1.8 V or 3.0 V. Both active-high and active-low reset outputs are provided, and the output stage is push-pull (totem pole), so no external pull-up resistor is needed — that saves a resistor per output on the BOM. The minimum reset timeout of 140 ms gives the downstream processor or FPGA enough time to stabilize its internal state before the reset de-asserts. This is a fixed delay, not adjustable, so confirm it meets your system's power-on reset requirement.
Package and thermal design note
The package footprint matches standard 8-TSSOP land patterns, but the center pad adds a thermal via requirement. Surface-mount assembly; the tube delivery is fine for prototyping but production volumes typically shift to tape-and-reel — confirm the reel option with your distributor when ordering.
Temperature grade and operating range
Not qualified to AEC-Q100, so it is not the choice for under-hood automotive or powertrain applications.
The base product number TPS3307 covers multiple threshold variants — confirm the -33DGN suffix matches your BOM before ordering.