Texas Instruments
Texas Instruments TPS3809I50MDBVREP Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4.55V Threshold, 120ms Timeout, -55°C~125°C, SOT-23-3.
MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T
| Parameter / Attribute | Specification / Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 4.55V |
| Number of voltages monitored | 1 |
| Operating temperature | -55°C~125°C(TA) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Reset timeout | 120ms Minimum |
| Case | TO-236-3, SC-59, SOT-23-3 |
The SOT-23-3 package (TO-236, SC-59) is a three-pin footprint shared by many supervisor ICs. The pinout is standard: GND, RESET, VDD. The 4.55V threshold is set for monitoring a 5V rail — it asserts reset when the supply falls to approximately 4.55V, which is typical for 5V logic families. The 120ms timeout is long enough to cover most power-supply ramp-up times without needing an external capacitor.
