Texas Instruments TPS3801T50DCKRG4, Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4V Threshold, 120ms Minimum Reset Timeout, SC-70-5, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 4V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR) |
| Reset timeout | 120ms Minimum |
| Case | 5-TSSOP, SC-70-5, SOT-353 |
The output is active-low push-pull, so it drives the reset pin of an MCU or DSP directly without an external pull-up resistor.
The SC-70-5 package (also known as SOT-353) occupies about 2 mm × 2 mm of board area, making it a fit for space-constrained designs like portable instruments, sensor nodes, or industrial control modules where a 4V rail needs supervision.
No — the reset threshold is 4V, so it monitors a 5V or 4.5V rail. It will not assert reset on a 3.3V rail because the threshold sits above the nominal supply voltage. For 3.3V supervision, look for a supervisor with a threshold near 2.93V or 3.08V in the same family.
The reset timeout is a minimum of 120ms. The processor is held in reset for at least that duration after the supply crosses the threshold, giving the oscillator and core time to stabilise.
Active low — the reset output goes low when the monitored voltage falls below the threshold and stays low through the timeout period after recovery.