Texas Instruments TPS3128E18DBVTG4 Simple Reset/Power-On Reset, Active Low, Open Drain, 1.71V Threshold, 100ms Minimum Reset Timeout, SOT-23-5, -40°C~85°C.
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 1.71V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active Low |
| Output | Open Drain or Open Collector |
| Package | Tape & Reel (TR) |
| Reset timeout | 100ms Minimum |
| Case | SC-74A, SOT-753 |
The TPS3128E18DBVTG4: The active-low, open-drain output pulls low when the monitored voltage falls below 1.71V, and releases after a 100ms minimum reset timeout once the rail recovers — a common interface for MCU and SoC reset inputs. Housed in a SOT-23-5 package, this part fits tight PCB layouts.
The reset output is active-low — it pulls low when the monitored voltage drops below the threshold and releases high after the timeout. This matches the reset polarity of most MCUs and SoCs.
Yes — the 1.71V threshold is designed to monitor a 1.8V nominal rail, asserting reset when the supply dips below 1.71V. It is a direct fit for 1.8V-powered MCUs and FPGAs.