# MC1081L

**Mysentech** · Capacitive Sensor IC · DFN-8-EP(2x2)

MC1081L from Mysentech, in a DFN-8-EP(2x2). 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 | I2C data line (open-drain style bus with an internal 10 kΩ pull-up, external pull-up optional); the I2C interface runs at up to 400 kHz per Section 7. |
| 2 | SCL | input | I2C clock input with spike suppression, which is pulled up to VDD through the bus pull-up resistor, with the device operating at up to 400 kHz. |
| 3 | VDD | power_in | Power supply input with an internal LDO; the operating range is 2.3 V to 5.5 V and the absolute maximum rating is -0.3 V to 6.0 V. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | C5 | passive | Capacitance sensing channel 5 analog input, connected directly to the measurement electrode; pin voltage must stay between -0.3 V and VDD. |
| 6 | C4 | passive | Capacitance sensing channel 4 analog input, connected directly to the measurement electrode; pin voltage must stay between -0.3 V and VDD. |
| 7 | C3 | passive | Capacitance sensing channel 3 analog input, connected directly to the measurement electrode; pin voltage must stay between -0.3 V and VDD. |
| 8 | C2 | passive | Capacitance sensing channel 2 analog input, connected directly to the measurement electrode; pin voltage must stay between -0.3 V and VDD. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Mysentech |
| Package | DFN-8-EP(2x2) |
| Category | Sensors |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `MC1081L`
- Footprint: `Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm`
- 3D model: DFN-8-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `mc1081l-etched.step` / `mc1081l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mc1081l.step` / `mc1081l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Mysentech datasheet](docs/mc1081l-datasheet.pdf) (46 pp, sha256 `1a2b3539e9a4aac8`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/mc1081l-datasheet.pdf)