CD4066BM from lingxingic, in a SOP-14. 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	1Y	bidirectional	Analog switch 1 terminal Y. Bilateral I/O of switch 1 (paired with 1Z). Signal range 0 V to VDD.
2	1Z	bidirectional	Analog switch 1 terminal Z. Bilateral I/O of switch 1 (paired with 1Y).
3	2Z	bidirectional	Analog switch 2 terminal Z. Bilateral I/O of switch 2 (paired with 2Y).
4	2Y	bidirectional	Analog switch 2 terminal Y. Bilateral I/O of switch 2 (paired with 2Z).
5	2E	input	Enable input for switch 2 (active HIGH). HIGH closes the switch; LOW opens it. VIH ≥ 3.5 V @ VDD=5 V; VIL ≤ 1.5 V @ VDD=5 V.
6	3E	input	Enable input for switch 3 (active HIGH). HIGH closes the switch; LOW opens it.
7	VSS	power_in	Ground reference (0 V). Negative supply / substrate return.
8	3Y	bidirectional	Analog switch 3 terminal Y. Bilateral I/O of switch 3 (paired with 3Z).
9	3Z	bidirectional	Analog switch 3 terminal Z. Bilateral I/O of switch 3 (paired with 3Y).
10	4Z	bidirectional	Analog switch 4 terminal Z. Bilateral I/O of switch 4 (paired with 4Y).
11	4Y	bidirectional	Analog switch 4 terminal Y. Bilateral I/O of switch 4 (paired with 4Z).
12	4E	input	Enable input for switch 4 (active HIGH). HIGH closes the switch; LOW opens it.
13	1E	input	Enable input for switch 1 (active HIGH). HIGH closes the switch; LOW opens it.
14	VDD	power_in	Positive supply voltage, 3 V to 9 V recommended (absolute max +12 V). Decouple to VSS with a local ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	lingxingic
Package	SOP-14
Category	Interface
Pins	14

Ordering variants

Same part, different packaging or reel option.

CD4066BM(LX)
CD4066BE(LX)
CD4066BPW(LX)

CAD (KiCad official)

Symbol: CD4066BM
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cd4066bm.step`	195 KB	You want the bare part, or you mark your own boards.
`cd4066bm-etched.step`	2.3 MB	You want the part with `CD4066BM` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 559 faces against 237 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: lingxingic datasheet (14 pp, sha256 c719e5f4a019aa91, 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