The DS1232LPS-2+ is a single-channel reset supervisor from Analog Devices' MicroMonitor™ series, monitoring a single voltage rail and asserting a reset signal when the supply dips below the selected threshold — 4.37 V or 4.62 V, depending on the pin strap. The reset output can be configured as active high or active low, and the output driver is either open-drain or push-pull, so it mates with both 5 V logic and mixed-voltage buses without a level translator. The reset timeout period is adjustable via an external capacitor, giving the downstream processor time to stabilize its oscillator and power rails before the supervisor releases the reset line.
Thresholds and temperature envelope
The voltage thresholds are factory-set at 4.37 V and 4.62 V — the 4.62 V option catches a 5 V rail that droops more than about 7.6%, while the 4.37 V threshold allows a deeper brownout before asserting reset. This dual-threshold flexibility is the main selection axis for the part. Operating temperature is rated 0°C to 70°C, which covers commercial and indoor equipment but not automotive or extended industrial environments. If the board lives in an unheated enclosure or under a dash, this part is not the fit.
The supplier device package is listed as 8-SOIC, and the part ships in tube format. Mounting is surface-mount only — no through-hole variant. The narrow SOIC body means the decoupling capacitor should sit within 5 mm of the VCC pin to keep the supply transient response tight.