MC1081S from Mysentech, in a QFN-16-EP(3x3). 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	C1	passive	Channel 1 capacitive sensing input. Connects to sense electrode for single-ended, dual-ended floating, or mutual capacitance measurement.
2	C0	passive	Channel 0 capacitive sensing input. Connects to sense electrode for single-ended, dual-ended floating, or mutual capacitance measurement.
3	SHLD	output	Active shield output. Drives a buffered replica of the sense signal onto guard traces to eliminate parasitic capacitance to ground. High-drive mode CLOAD up to 100pF; low-drive mode 50pF.
4	SDA	bidirectional	I2C serial data line. Open-drain; supports standard mode (up to 400kHz) and fast mode (up to 1MHz). Requires external pull-up.
5	SCL	input	I2C serial clock line input. Supports standard mode (up to 400kHz) and fast mode (up to 1MHz).
6	ADDR	input	I2C slave address select input. Tied high or low to select one of two I2C addresses.
7	VDD	power_in	Supply voltage input. Operating range 2.3V to 5.5V; absolute max 6.0V. Internal LDO regulates for oscillator driver.
8	GND	power_in	Ground reference. Return for supply, digital, and analog circuitry.
9	C9	passive	Channel 9 capacitive sensing input. Pairs with C8 for dual-ended/mutual mode (channels 8-9 pair).
10	C8	passive	Channel 8 capacitive sensing input. Pairs with C9 for dual-ended/mutual mode (channels 8-9 pair).
11	C7	passive	Channel 7 capacitive sensing input. Pairs with C6 for dual-ended/mutual mode (channels 6-7 pair).
12	C6	passive	Channel 6 capacitive sensing input. Pairs with C7 for dual-ended/mutual mode (channels 6-7 pair).
13	C5	passive	Channel 5 capacitive sensing input. Pairs with C4 for dual-ended/mutual mode (channels 4-5 pair).
14	C4	passive	Channel 4 capacitive sensing input. Pairs with C5 for dual-ended/mutual mode (channels 4-5 pair).
15	C3	passive	Channel 3 capacitive sensing input. Pairs with C2 for dual-ended/mutual mode (channels 2-3 pair).
16	C2	passive	Channel 2 capacitive sensing input. Pairs with C3 for dual-ended/mutual mode (channels 2-3 pair).
17	EP	passive	Exposed thermal pad on package underside. May be left floating or connected to GND per datasheet note 2.

Key specifications

Parameter	Value
Manufacturer	Mysentech
Package	QFN-16-EP(3x3)
Category	Sensor
Pins	17

Ordering variants

Same part, different packaging or reel option.

MC1081S
MC1081L

CAD (KiCad official)

Symbol: MC1081S
Footprint: Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)

Provenance

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

Datasheet: Mysentech datasheet (46 pp, sha256 a057edd51418dfbd, retrieved 2026-08-17, 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: 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