COSN74LVC1G3157DBVR from COSINE, in a SOT-23-6. 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	NO	passive	Normally Open switch terminal. Connected to COM when IN is HIGH; disconnected (high impedance) when IN is LOW. Bidirectional analog signal path, 0V to VCC, ~4.5Ω typ. ON-resistance at VCC=5V.
2	GND	power_in	Ground reference for the device (0V).
3	NC	passive	Normally Closed switch terminal. Connected to COM when IN is LOW; disconnected (high impedance) when IN is HIGH. Bidirectional analog signal path, 0V to VCC, ~4.5Ω typ. ON-resistance at VCC=5V. Note: 'NC' here means Normally Closed switch pole, not No-Connect.
4	COM	passive	Common switch terminal (pole). Routed to either NO or NC depending on the IN control state. Bidirectional analog signal path, 0V to VCC.
5	VCC	power_in	Positive supply voltage, 1.65V to 5.5V (absolute max 6.0V). Typical ICC = 5 μA at 5.5V.
6	IN	input	Digital control input selecting the switch path. IN=0 connects COM to NC (NO off); IN=1 connects COM to NO (NC off). Must be driven HIGH or LOW; VIH=2.6V (5V supply), VIL=0.8V (5V supply). TTL/CMOS compatible.

Key specifications

Parameter	Value
Manufacturer	COSINE
Package	SOT-23-6
Category	Interface
Pins	6

Ordering variants

Same part, different packaging or reel option.

COSN74LVC1G3157DBVR
COSN74LVC1G3157DBVRDCKR

CAD (KiCad official)

Symbol: COSN74LVC1G3157DBVR
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: COSINE datasheet (10 pp, sha256 8abc30c2fd2ebf05, 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