2.63V threshold supervisor for 3.0V rails
The TPS3839L30DQNT is a single-channel voltage supervisor from Texas Instruments that asserts a reset signal when the monitored supply drops below 2.63V.

Texas Instruments TPS3839L30DQNT, Simple Reset/Power-On Reset, 1 channel, Active Low, Push-Pull output, 2.63V threshold, 120ms min reset timeout, -40°C to 85°C, 4-X2SON (1x1) package, Surface Mount, Active, ROHS3 compliant.
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 2.63V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Reset timeout | 120ms Minimum |
| Case | 4-XDFN Exposed Pad |
The TPS3839L30DQNT is a single-channel voltage supervisor from Texas Instruments that asserts a reset signal when the monitored supply drops below 2.63V.
It comes in a 4-XDFN Exposed Pad package, also referred to as 4-X2SON (1x1 mm).
The threshold is 2.63V, which is below the 3.3V nominal rail. For a 3.3V supply, a supervisor with a threshold around 2.93V or 3.08V would be a closer fit. The TPS3839L30DQNT is designed for 3.0V rails.