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STM1815SWX7F

STM1815SWX7F Simple Reset/Power-On Reset, 2.88V Threshold

MPNSTM1815SWX7F
End of Life

STMicroelectronics STM1815SWX7F Simple Reset/Power-On Reset IC, Active Low, Push-Pull Output, 2.88V Threshold, 100ms Minimum Reset Timeout, SOT-23-3 Package, -40°C to 105°C.

$1.34Ref. price · indicative, final on quote
STMicroelectronics STM1815SWX7F datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM1815SWX7F specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold2.88V
Number of voltages monitored1
Operating temperature-40°C ~ 105°C (TA)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout100ms Minimum
CaseTO-236-3, SC-59, SOT-23-3

Product details

Voltage supervisor with a 2.88 V trip point

The STM1815SWX7F: The output is push-pull, totem-pole, active-low — meaning the reset pin goes low when the monitored voltage falls below threshold, and drives high once the timeout expires. No external pull-up resistor is needed, which saves a component on the BOM.

Package and temperature grade

The small body suits space-constrained designs like portable instrumentation or sensor modules where a supervisor is needed without dedicating board area. Rated for operation from -40°C to 105°C ambient, it covers industrial temperature ranges — motor drives, power supplies, and outdoor telecom equipment that see thermal cycling stay within the guaranteed operating envelope.

Frequently asked questions

What is the reset polarity of the STM1815SWX7F?

The reset is active low — the output pin goes low when the monitored voltage falls below the 2.88 V threshold, and stays low for the 100 ms minimum timeout after the supply recovers.

How does the STM1815SWX7F compare to the STM1817RWX7F?

Both share the same SOT-23-3 package, 100 ms timeout, and -40°C to 105°C range. The choice between them depends on whether the downstream logic expects a low-true or high-true reset signal.