GS3157-CR from Gainsil, in a SC-70-6. 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 analog switch throw. Bidirectional analog signal pin; connected to COM when IN is high. Signal range Vss to VDD, ICOM rated to ±10mA in the RON test conditions.
2	VSS	power_in	Negative supply / ground reference for the analog switch. Typically tied to GND for single-supply operation; analog signals on NO/NC/COM must remain within Vss-0.5V to VDD+0.5V.
3	NC	passive	Normally-Closed analog switch throw. Bidirectional analog signal pin; connected to COM when IN is low. Signal range Vss to VDD.
4	COM	passive	Common pole of the SPDT switch. Bidirectional analog signal pin; routed to either NO or NC depending on the IN control state, with 4.0Ω typical on-resistance.
5	VDD	power_in	Positive supply input, +1.8V to +5.5V single-supply operation (absolute max +7.5V vs VSS). Decouple with a 0.1μF capacitor to VSS. Static supply current 1μA max.
6	IN	input	Digital control input selecting the switch path (TTL/CMOS compatible). Logic high (VINH ≥ 1.5V @ VS=5V) connects COM to NO; logic low (VINL ≤ 0.55V @ VS=5V) connects COM to NC. Tolerates drive up to 5.5V independent of VDD; input leakage ±1μA max.

Key specifications

Parameter	Value
Manufacturer	Gainsil
Package	SC-70-6
Category	Comm/UART
Pins	6

Ordering variants

Same part, different packaging or reel option.

GS3157-CR
GS3157-CRTR

CAD (KiCad official)

Symbol: GS3157-CR
Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
3D model: SC-70-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Gainsil datasheet (9 pp, sha256 3a067b18379d2152, 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