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DS1818R-20+T&R

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by Ray

Analog Devices Inc Maxim Integrated Supervisor And Reset ICs, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)ds1818r-20+t&r
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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DS1818R-20+T&R

Analog Devices Inc Maxim Integrated · Supervisor And Reset ICs · SOT-23-3

DS1818R-20+T&R from Analog Devices Inc Maxim Integrated, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 RST bidirectional Active-low reset output. Open-drain with internal 5.5 kΩ (typ) pullup to VCC (RP: 3.50-7.5 kΩ). Asserted low when VCC drops below VCCTP (2.47-2.64 V for the -20 variant) and held low for ~150 ms after VCC returns to tolerance. Also monitors an external pushbutton: pulling RST low for ≥1 µs (tPB) triggers a 150 ms pushbutton reset (tPBRST). IOL ≥ +10 mA at 0.4 V; VIL ≤ 0.4 V, VIH ≥ 0.7*VCC.
2 VCC power_in Power supply input. Recommended operating range 1.0 V to 5.5 V; monitored for out-of-tolerance conditions against the 3.3 V nominal threshold (VCCTP typ 2.55 V for the -20 / 20% variant). Quiescent current ICC = 28 µA typ, 35 µA max (with RST open). Absolute max: -0.5 V to +7.0 V.
3 GND power_in Device ground reference. All voltages are referenced to this pin.

Key specifications

Parameter Value
Manufacturer Analog Devices Inc Maxim Integrated
Package SOT-23-3
Category Power Management (PMIC)
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • DS1818R-20+T&RR

CAD (KiCad official)

  • Symbol: DS1818R-20+T&R
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Analog Devices Inc Maxim Integrated datasheet (None pp, sha256 36fe757a06dc06e4, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF