CD4066BMT from HGSEMI, 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	Switch 1 analog I/O terminal Y. Bidirectional analog signal path to 1Z when 1E is HIGH; high-impedance when 1E is LOW. Signal range 0V to VDD.
2	1Z	bidirectional	Switch 1 analog I/O terminal Z. Bidirectional analog signal path to 1Y when 1E is HIGH; high-impedance when 1E is LOW. Signal range 0V to VDD.
3	2Z	bidirectional	Switch 2 analog I/O terminal Z. Bidirectional analog signal path to 2Y when 2E is HIGH; high-impedance when 2E is LOW. Signal range 0V to VDD.
4	2Y	bidirectional	Switch 2 analog I/O terminal Y. Bidirectional analog signal path to 2Z when 2E is HIGH; high-impedance when 2E is LOW. Signal range 0V to VDD.
5	2E	input	Switch 2 enable input (active HIGH). HIGH closes the 2Y-2Z analog switch; LOW opens it. Logic thresholds scale with VDD (VIH≥0.7·VDD).
6	3E	input	Switch 3 enable input (active HIGH). HIGH closes the 3Y-3Z analog switch; LOW opens it. Logic thresholds scale with VDD.
7	VSS	power_in	Negative supply / ground reference (0V). All input and switch signals are referenced to VSS.
8	3Y	bidirectional	Switch 3 analog I/O terminal Y. Bidirectional analog signal path to 3Z when 3E is HIGH; high-impedance when 3E is LOW. Signal range 0V to VDD.
9	3Z	bidirectional	Switch 3 analog I/O terminal Z. Bidirectional analog signal path to 3Y when 3E is HIGH; high-impedance when 3E is LOW. Signal range 0V to VDD.
10	4Z	bidirectional	Switch 4 analog I/O terminal Z. Bidirectional analog signal path to 4Y when 4E is HIGH; high-impedance when 4E is LOW. Signal range 0V to VDD.
11	4Y	bidirectional	Switch 4 analog I/O terminal Y. Bidirectional analog signal path to 4Z when 4E is HIGH; high-impedance when 4E is LOW. Signal range 0V to VDD.
12	4E	input	Switch 4 enable input (active HIGH). HIGH closes the 4Y-4Z analog switch; LOW opens it. Logic thresholds scale with VDD.
13	1E	input	Switch 1 enable input (active HIGH). HIGH closes the 1Y-1Z analog switch; LOW opens it. Logic thresholds scale with VDD.
14	VDD	power_in	Positive supply voltage. Operating range 3V to 15V (recommended 3V to 12V). Sets the maximum analog signal swing and the logic thresholds on the nE control pins.

Key specifications

Parameter	Value
Manufacturer	HGSEMI
Package	TSSOP-14
Category	Interface
Pins	14

Ordering variants

Same part, different packaging or reel option.

CD4066BMT/TR
CD4066BMTBM/TR
CD4066BMTBE
CD4066BMTBN

CAD (KiCad official)

Symbol: CD4066BMT
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: HGSEMI datasheet (15 pp, sha256 705f1381b09b6660, 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