component
DS1818R-20+T&R
Public Made by Adomby adom
Analog Devices Inc Maxim Integrated Supervisor And Reset ICs, SOT-23-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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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)
- 3D model files:
ds1818r-20-t-r-etched.step/ds1818r-20-t-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds1818r-20-t-r.step/ds1818r-20-t-r.glbare the bare package body.
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).
# 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)
- 3D model files: `ds1818r-20-t-r-etched.step` / `ds1818r-20-t-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ds1818r-20-t-r.step` / `ds1818r-20-t-r.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Analog Devices Inc Maxim Integrated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588939985521557504) (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](docs/ds1818r-20-t-r-datasheet.pdf)