Texas Instruments
Texas Instruments LM809M3-2.93/NOPB Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 2.93V Threshold, 140ms Minimum Reset Timeout, SOT-23-3, -40°C to 105°C.
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 | 2.93V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C ~ 105°C (TA) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Reset timeout | 140ms Minimum |
| Case | TO-236-3, SC-59, SOT-23-3 |
The LM809M3-2.93/NOPB: The 140ms minimum reset timeout gives downstream logic time to stabilize after the supply rail crosses the 2.93V threshold — the processor's oscillator and PLL lock within this window before the reset de-asserts. Push-pull output eliminates the external pull-up resistor required by open-drain supervisors, saving one component per rail and keeping the BOM count low in space-constrained SOT-23-3 layouts.
