SN74LVC1G66DB from lingxingic SN74LVC1G66DB LX, in a SOT-23-5. 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	Y	bidirectional	Independent input or output terminal of the analog bilateral switch (channel Y side). Bidirectional analog path; conducts to/from Z when E=HIGH. Signal range 0 V to VCC.
2	Z	bidirectional	Independent output or input terminal of the analog bilateral switch (channel Z side). Bidirectional analog path; conducts to/from Y when E=HIGH. Signal range 0 V to VCC.
3	GND	power_in	Ground reference (0 V) for the device.
4	E	input	Active-HIGH enable input. E=HIGH closes the Y-Z switch (ON-state); E=LOW opens the switch (OFF-state, high impedance). Logic input referenced to VCC/GND.
5	VCC	power_in	Supply voltage input, 1.65 V to 5.5 V recommended (absolute max +6.5 V). Powers the enable buffer and biases the analog switch.

Key specifications

Parameter	Value
Manufacturer	lingxingic SN74LVC1G66DB LX
Package	SOT-23-5
Category	Interface
Pins	5

Ordering variants

Same part, different packaging or reel option.

SN74LVC1G66DB
SN74LVC1G66DBDC
SN74LVC1G66DC

CAD (KiCad official)

Symbol: SN74LVC1G66DB
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: lingxingic SN74LVC1G66DB LX datasheet (19 pp, sha256 3cb7ae51cf79a095, 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