ET3157-HXY from HXY MOSFET, 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	B1	bidirectional	Analog/digital I/O channel 1 of the 2:1 switch. Connected to A when Select = H. Signal range 0 V to VCC.
2	GND	power_in	Ground reference for the device.
3	B0	bidirectional	Analog/digital I/O channel 0 of the 2:1 switch. Connected to A when Select = L. Signal range 0 V to VCC.
4	A	bidirectional	Common analog/digital I/O port of the 2:1 switch. Routed to B0 or B1 depending on Select. Signal range 0 V to VCC.
5	VCC	power_in	Positive supply, 1.65 V to 5.5 V operating range (absolute max 7.0 V).
6	Select	input	Digital control input selecting the switch path: L connects B0 to A, H connects B1 to A. Over-voltage tolerant up to 7 V independent of VCC. Must be driven high or low, do not leave floating.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

ET3157-HXY

CAD (KiCad official)

Symbol: ET3157-HXY
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: HXY MOSFET datasheet (10 pp, sha256 962044a273169b51, 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