2.93V threshold supervisor for a single supply rail
The TPS3809K33MDBVREP: The threshold is set at 2.93V, which suits 3.0V or 3.3V nominal rails where the supervisor must assert reset before the supply drops below the processor's minimum operating voltage. The output is push-pull, totem pole — no external pull-up resistor needed.
It is suited for avionics, satellite, downhole drilling, and other environments where the electronics must function across wide thermal extremes. The SOT-23-3 package keeps the footprint small — three pins, one monitored rail — so the board area penalty for this level of temperature coverage is minimal.
This is a surface-mount part in the SOT-23-3 package — three leads, 0.95 mm pitch typical for the family. The base product number is TPS3809; the full order code TPS3809K33MDBVREP encodes the 2.93V threshold (K33), the SOT-23-3 package (DBV), and the enhanced-product (EP) designation that brings the extended temperature range. For a design that already uses a TPS3809-family supervisor, this variant drops in if the board needs the -55 to 125°C rating.