GS3005-MR from Gainsil, in a MSOP-10. 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	VDD	power_in	Positive supply input. Operating range +1.8V to +5.5V; absolute max +7.5V referenced to VSS. Bypass with a 0.1µF capacitor to GND close to the pin.
2	NO1	passive	Normally-Open analog switch terminal for channel 1. Connected to COM1 when IN1 is high. Analog signal range 0V to VDD; RON typ 0.8Ω at VS=4.5V.
3	COM1	passive	Common analog switch terminal for channel 1. Routed to NO1 or NC1 depending on IN1 logic level. Analog signal range 0V to VDD.
4	IN1	input	Digital control input for channel 1. TTL/CMOS compatible; VINH ≥ 1.5V (VS=5V) / 0.9V (VS=3V), VINL ≤ 0.55V (VS=5V) / 0.45V (VS=3V). Tolerates drive levels up to 5.5V independent of VDD. IN1 high → COM1 connects to NO1 (break-before-make).
5	NC1	passive	Normally-Closed analog switch terminal for channel 1. Connected to COM1 when IN1 is low. Analog signal range 0V to VDD.
6	GND	power_in	Ground/negative supply reference (VSS). Tie to system ground. All analog signals must remain between GND and VDD.
7	NC2	passive	Normally-Closed analog switch terminal for channel 2. Connected to COM2 when IN2 is low. Analog signal range 0V to VDD.
8	IN2	input	Digital control input for channel 2. TTL/CMOS compatible with the same thresholds as IN1; tolerates drive up to 5.5V. IN2 high → COM2 connects to NO2 (break-before-make).
9	COM2	passive	Common analog switch terminal for channel 2. Routed to NO2 or NC2 based on IN2 logic level. Analog signal range 0V to VDD.
10	NO2	passive	Normally-Open analog switch terminal for channel 2. Connected to COM2 when IN2 is high. Analog signal range 0V to VDD; RON typ 0.8Ω at VS=4.5V.

Key specifications

Parameter	Value
Manufacturer	Gainsil
Package	MSOP-10
Category	Interface
Pins	10

Ordering variants

Same part, different packaging or reel option.

GS3005-MR
GS3005-MRFR

CAD (KiCad official)

Symbol: GS3005-MR
Footprint: Package_SO:MSOP-10_3x3mm_P0.5mm
3D model: MSOP-10 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gs3005-mr.step`	148 KB	You want the bare part, or you mark your own boards.
`gs3005-mr-etched.step`	2.4 MB	You want the part with `GS3005-MR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 571 faces against 177 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Gainsil datasheet (9 pp, sha256 46f7e7764fd2bc61, 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