HEF4070BT from Nexperia, in a SOIC-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	1A	input	Gate 1 data input A. CMOS logic input with clamp diodes; recommended input voltage range 0 V to VDD (3-15 V).
2	1B	input	Gate 1 data input B. CMOS logic input with clamp diodes; recommended input voltage range 0 V to VDD (3-15 V).
3	1Y	output	Gate 1 data output. XOR of 1A and 1B; rail-to-rail CMOS output (VOH >= VDD - 0.05 V, VOL <= 0.05 V at
4	2Y	output	Gate 2 data output. XOR of 2A and 2B; rail-to-rail CMOS output.
5	2A	input	Gate 2 data input A. CMOS logic input with clamp diodes.
6	2B	input	Gate 2 data input B. CMOS logic input with clamp diodes.
7	VSS	power_in	Ground reference (0 V) for the device.
8	3A	input	Gate 3 data input A. CMOS logic input with clamp diodes.
9	3B	input	Gate 3 data input B. CMOS logic input with clamp diodes.
10	3Y	output	Gate 3 data output. XOR of 3A and 3B; rail-to-rail CMOS output.
11	4Y	output	Gate 4 data output. XOR of 4A and 4B; rail-to-rail CMOS output.
12	4A	input	Gate 4 data input A. CMOS logic input with clamp diodes.
13	4B	input	Gate 4 data input B. CMOS logic input with clamp diodes.
14	VDD	power_in	Positive supply voltage. Recommended operating range 3 V to 15 V; absolute maximum -0.5 V to +18 V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

HEF4070BTT

CAD (KiCad official)

Symbol: HEF4070BT
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`hef4070bt.step`	195 KB	You want the bare part, or you mark your own boards.
`hef4070bt-etched.step`	2.0 MB	You want the part with `HEF4070BT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 519 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: Nexperia datasheet (9 pp, sha256 40c2fad27ae2a3fd, 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