74LVC4066PW from Nexperia, in a TSSOP-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	Independent input/output terminal of analog switch 1. Paired with 1Z through the bilateral switch; conducts when 1E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
2	1Z	bidirectional	Independent output/input terminal of analog switch 1. Paired with 1Y through the bilateral switch; conducts when 1E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
3	2Z	bidirectional	Independent output/input terminal of analog switch 2. Paired with 2Y through the bilateral switch; conducts when 2E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
4	2Y	bidirectional	Independent input/output terminal of analog switch 2. Paired with 2Z through the bilateral switch; conducts when 2E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
5	2E	input	Active-HIGH enable input for switch 2. LOW turns switch 2 OFF; HIGH turns it ON. Schmitt-trigger input; tolerates 0 V to 5.5 V regardless of VCC (5 V tolerant).
6	3E	input	Active-HIGH enable input for switch 3. LOW turns switch 3 OFF; HIGH turns it ON. Schmitt-trigger input; tolerates 0 V to 5.5 V regardless of VCC (5 V tolerant).
7	GND	power_in	Ground reference (0 V) for the device.
8	3Y	bidirectional	Independent input/output terminal of analog switch 3. Paired with 3Z through the bilateral switch; conducts when 3E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
9	3Z	bidirectional	Independent output/input terminal of analog switch 3. Paired with 3Y through the bilateral switch; conducts when 3E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
10	4Z	bidirectional	Independent output/input terminal of analog switch 4. Paired with 4Y through the bilateral switch; conducts when 4E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
11	4Y	bidirectional	Independent input/output terminal of analog switch 4. Paired with 4Z through the bilateral switch; conducts when 4E is HIGH. Signal range 0 V to VCC, switch current up to ±32 mA.
12	4E	input	Active-HIGH enable input for switch 4. LOW turns switch 4 OFF; HIGH turns it ON. Schmitt-trigger input; tolerates 0 V to 5.5 V regardless of VCC (5 V tolerant).
13	1E	input	Active-HIGH enable input for switch 1. LOW turns switch 1 OFF; HIGH turns it ON. Schmitt-trigger input; tolerates 0 V to 5.5 V regardless of VCC (5 V tolerant).
14	VCC	power_in	Supply voltage input. Operating range 1.65 V to 5.5 V; absolute max 6.5 V. Decouple to GND with a local bypass capacitor.

Key specifications

Parameter	Value
Manufacturer	Nexperia
Package	TSSOP-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

74LVC4066PW
74LVC4066PWD
74LVC4066PWBQ

CAD (KiCad official)

Symbol: 74LVC4066PW
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Nexperia datasheet (20 pp, sha256 f8d08819f828206d, retrieved 2026-08-17, tier: manufacturer)
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