Texas Instruments TPS3825-50DBVT Simple Reset/Power-On Reset, Active High, Push-Pull Output, 4.55V Threshold, 120ms Minimum Reset Timeout, SC-74A/SOT-753, SOT-23-5, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 4.55V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active High |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Reset timeout | 120ms Minimum |
| Case | SC-74A, SOT-753 |
That 4.55V threshold is the key number: it's set for a 5V nominal rail with a typical undervoltage lockout window, so it catches a sagging supply before the downstream logic starts behaving erratically. The reset output is active high with a push-pull, totem pole stage — no external pull-up resistor needed.
Housed in a 5-pin SOT-23-5 (also specified as SC-74A, SOT-753), this is a surface-mount part that fits tight board layouts.
The reset output is active high, meaning the reset pin goes high when the supply drops below the threshold.
It comes in a 5-pin SOT-23-5 surface-mount package, also specified as SC-74A / SOT-753.
The reset timeout is 120ms minimum, giving the processor time to stabilise after the supply returns.