Reset supervisor for a 3.3V rail
The open-drain output lets you wire-OR the reset signal with other supervisors or a manual reset button, and it requires an external pull-up resistor to the logic supply.
TI TPS389033DSET Simple Reset IC, 3.3V Threshold
MPNTPS389033DSET
Active
Texas Instruments TPS389033DSET, Simple Reset/Power-On Reset IC, 3.3V threshold, Active Low open-drain output, -40°C~125°C, 6-WSON (1.5x1.5) package, Surface Mount.
$1.9800Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 3.3V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~125°C(TJ) |
| Reset | Active Low |
| Output | Open Drain or Open Collector |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 6-WFDFN |
Product details
Frequently asked questions
Does TPS389033DSET require an external pull-up resistor?
Yes, because the output is open-drain, an external pull-up resistor to the logic supply rail is needed to generate a valid logic-high level.