# SGM706-TYS8G

**SGMICRO** · Supervisor And Reset ICs · SOIC-8

SGM706-TYS8G from SGMICRO, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | MR | input | Active-low manual-reset input that triggers a reset pulse when pulled below 0.8V, with an internal 100-600µA pull-up (250µA typical at VCC = 5V). |
| 2 | VCC | power_in | Supply voltage monitored by the supervisor, with an operating range of 1.0V to 5.5V. |
| 3 | GND | power_in | 0V ground reference for all signals. |
| 4 | PFI | input | Power-fail voltage monitor input whose 1.25V threshold (1.18V to 1.3V) drives PFO low when exceeded in the falling direction; connect to GND or VCC when not used. |
| 5 | PFO | output | Power-fail output that goes low and sinks current when PFI is below 1.25V, otherwise stays high. |
| 6 | WDI | input | Watchdog input where holding it high or low for 1.6s lets the watchdog timer expire and drive WDO low; floating it or three-stating it disables the watchdog. |
| 7 | RESET | output | Active-low reset output that pulses low for 200ms when triggered and stays low while VCC is below the 3.08V reset threshold of the SGM706-T, remaining low 200ms after VCC rises above it or MR goes low-to-high. |
| 8 | WDO | output | Watchdog output that goes low when the 1.6s watchdog count finishes, stays low during low-line conditions, and does not return high until the watchdog is cleared. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SGMICRO |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | VCC | 1 |  | 5.5 | V |  | 4 |
| Supply Current | ISUPPLY |  | 50 | 150 | μA |  | 4 |
| Reset Threshold (SGM706-T) | VRT | 3.02 | 3.08 | 3.14 | V | SGM706-T | 4 |
| Reset Threshold Hysteresis (SGM706-T, SGM706-S) |  |  | 25 |  | mV | SGM706-T, SGM706-S | 4 |
| Reset Pulse Width | tRS | 120 | 200 | 280 | ms |  | 4 |
| RESET Output Voltage (Isink) | VOL |  |  | 0.4 | V | Isink = 3.2mA | 4 |
| RESET Output Voltage (VCC=1V) | VOL |  |  | 0.3 | V | VCC = 1V, Isink = 50μA | 4 |
| Watchdog Timeout Period | tWD | 1 | 1.6 | 2.25 | sec |  | 4 |
| WDI Pulse Width | tWP | 70 |  |  | ns | VIL = 0.4V, VIH = VCC | 4 |
| WDI Input Threshold Low (VCC=5V) | VIL |  |  | 0.8 | V | VCC = 5V | 4 |
| WDI Input Threshold High (VCC=5V) | VIH | 3.5 |  |  | V | VCC = 5V | 4 |
| WDI Input Threshold Low (VRST(MAX) < VCC < 3.6V) | VIL |  |  | 0.8 | V | VRST(MAX) < VCC < 3.6V | 4 |
| WDI Input Current (WDI = VCC) | IWDI | 50 |  | 150 | μA | WDI = VCC | 4 |
| WDI Input Current (WDI = 0V) | IWDI | -150 |  | -50 | μA | WDI = 0V | 4 |
| WDO Output Voltage (Isink) | VOL |  |  | 0.4 | V | Isink = 1.2mA | 4 |
| MR Pull-Up Current | IMR | 100 |  | 600 | μA | MR = 0V | 4 |
| MR Pulse Width | tMR | 250 |  |  | ns |  | 4 |
| MR Input Threshold Low | VIL |  |  | 0.8 | V | TA = +25℃ | 4 |
| MR Input Threshold High | VIH | 2 |  |  | V |  | 4 |
| MR to Reset Out Delay | tMD |  |  | 350 | ns |  | 4 |
| PFI Input Threshold | VPFI | 1.18 | 1.25 | 1.3 | V | VCC = 5V | 4 |
| PFI Input Current | IPFI |  | 0.2 |  | nA |  | 4 |
| PFO Output Voltage (Isink) | VOL |  |  | 0.4 | V | Isink = 3.2mA | 4 |
| Terminal Voltage VCC (with respect to GND) | VCC | -0.3 |  | 6 | V | With respect to GND | 2 |
| Terminal Voltage All Other Inputs (with respect to GND) | VIN | -0.3 |  |  | V | Printed maximum is VCC + 0.3V | 2 |
| Input Current, VCC | ICC |  |  | 20 | mA |  | 2 |
| GND Current | IGND |  |  | 20 | mA |  | 2 |
| Output Current (all outputs) | IO |  |  | 20 | mA |  | 2 |
| Operating Temperature Range | TA | -40 |  | 85 | ℃ |  | 2 |
| Junction Temperature | TJ |  |  | 150 | ℃ |  | 2 |
| Storage Temperature | TSTG | -65 |  | 150 | ℃ |  | 2 |
| Lead Temperature (Soldering) | TLEAD |  |  | 260 | ℃ | Soldering, 10sec | 2 |
| ESD Susceptibility HBM | VESD |  |  | 4000 | V | HBM | 2 |
| ESD Susceptibility MM | VESD |  |  | 300 | V | MM | 2 |

## CAD (KiCad official)

- Symbol: `SGM706-TYS8G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `sgm706-tys8g-etched.step` / `sgm706-tys8g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sgm706-tys8g.step` / `sgm706-tys8g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SGMICRO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879858873483264) (13 pp, sha256 `ce64e31e588799cb`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/sgm706-tys8g-datasheet.pdf)