1P1G3157QDCKRQ1 from Texas Instruments, 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	B2	bidirectional	Analog switch throw terminal 2 (second common terminal). Bidirectional analog/digital I/O; connected to A when S is high. Signal range 0 to VCC.
2	GND	power_in	Ground reference (0 V).
3	B1	bidirectional	Analog switch throw terminal 1 (first common terminal). Bidirectional analog/digital I/O; connected to A when S is low. Signal range 0 to VCC.
4	A	bidirectional	Analog switch pole (common terminal). Bidirectional I/O routed to either B1 or B2 depending on the S select input. Signal range 0 to VCC.
5	VCC	power_in	Positive supply voltage. Recommended operating range 1.65 V to 5.5 V; absolute maximum 6.5 V.
6	S	input	Digital select input. Low routes A to B1; high routes A to B2. VIH ≈ 0.7×VCC, VIL ≈ 0.3×VCC at VCC ≥ 2.3 V.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SC-70-6
Category	Interface
Pins	6

Ordering variants

1P1G3157QDCKRQ1
1P1G3157QDCKRQ1DBV
1P1G3157QDCKRQ1DBVR

CAD (KiCad official)

Symbol: 1P1G3157QDCKRQ1
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: Texas Instruments datasheet (29 pp, sha256 09bbd4ffa0be4a5a, 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