# AT30TS74-SS8M-T

**Microchip Tech** · Temperature Sensors · SOIC-8

AT30TS74-SS8M-T from Microchip Tech, 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 | SDA | bidirectional | Serial Data is an open-drain bidirectional pin that must be pulled high with an external pull-up resistor. |
| 2 | SCL | input | Serial Clock is the bus clock input that must be forced high when the bus is idle or pulled high with an external pull-up resistor. |
| 3 | ALERT | output | ALERT is an open-drain output that signals temperature limit alarms, defaults to active low, and must be pulled high with an external pull-up resistor even when unused. |
| 4 | GND | power_in | Ground is the reference for the power supply and should be connected to system ground. |
| 5 | A2 | input | Address input A2 sets the third least-significant bit of the I2C/SMBus 7-bit slave address and should be connected directly to VCC or GND; it is internally pulled to GND if left floating. |
| 6 | A1 | input | Address input A1 sets the second least-significant bit of the I2C/SMBus 7-bit slave address and should be connected directly to VCC or GND; it is internally pulled to GND if left floating. |
| 7 | A0 | input | Address input A0 sets the least-significant bit of the I2C/SMBus 7-bit slave address and should be connected directly to VCC or GND; it is internally pulled to GND if left floating. |
| 8 | VCC | power_in | Device power supply pin for source voltage from 1.7V to 5.5V; operation at invalid VCC voltages may produce spurious results. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Sensors |
| Pins | 8 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | F = Green, Matte Tin Lead Finish or | 32 |

## CAD (KiCad official)

- Symbol: `AT30TS74-SS8M-T`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `at30ts74-ss8m-t-etched.step` / `at30ts74-ss8m-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `at30ts74-ss8m-t.step` / `at30ts74-ss8m-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/at30ts74-ss8m-t-datasheet.pdf) (42 pp, sha256 `e7d91b9ca06f516b`, retrieved 2026-10-27, tier: manufacturer)
- **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/at30ts74-ss8m-t-datasheet.pdf)