SN74AHC14DR from Texas Instruments, 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	Channel 1 Schmitt-trigger input. VT+ typ 2.4 V, VT- typ 1.5 V at VCC=4.5 V. Unused inputs must be tied to VCC or GND.
2	1Y	output	Channel 1 inverted output (Y = /A). Push-pull CMOS output rated ±8 mA at VCC=5 V.
3	2A	input	Channel 2 Schmitt-trigger input. Unused inputs must be tied to VCC or GND.
4	2Y	output	Channel 2 inverted output (Y = /A). Push-pull CMOS output rated ±8 mA at VCC=5 V.
5	3A	input	Channel 3 Schmitt-trigger input. Unused inputs must be tied to VCC or GND.
6	3Y	output	Channel 3 inverted output (Y = /A). Push-pull CMOS output rated ±8 mA at VCC=5 V.
7	GND	power_in	Ground reference (0 V) for supply and I/O.
8	4Y	output	Channel 4 inverted output (Y = /A). Push-pull CMOS output rated ±8 mA at VCC=5 V.
9	4A	input	Channel 4 Schmitt-trigger input. Unused inputs must be tied to VCC or GND.
10	5Y	output	Channel 5 inverted output (Y = /A). Push-pull CMOS output rated ±8 mA at VCC=5 V.
11	5A	input	Channel 5 Schmitt-trigger input. Unused inputs must be tied to VCC or GND.
12	6Y	output	Channel 6 inverted output (Y = /A). Push-pull CMOS output rated ±8 mA at VCC=5 V.
13	6A	input	Channel 6 Schmitt-trigger input. Unused inputs must be tied to VCC or GND.
14	VCC	power_in	Positive supply voltage, 2 V to 5.5 V recommended operating range. Decouple to GND with a 0.1 µF ceramic capacitor close to the pin.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

SN74AHC14DRD
SN74AHC14DR
SN74AHC14DRDB
SN74AHC14DRDBR
SN74AHC14DRN
SN74AHC14DRNS
SN74AHC14DRNSR
SN74AHC14DRPW
SN74AHC14DRPWR
SN74AHC14DRDGV
SN74AHC14DRDGVR
SN74AHC14DRRGY
SN74AHC14DRRGYR
SN74AHC14DRBQA
SN74AHC14DRBQAR
SN74AHC14DRFK
SN74AHC14DRJ
SN74AHC14DRW

CAD (KiCad official)

Symbol: SN74AHC14DR
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
`sn74ahc14dr.step`	195 KB	You want the bare part, or you mark your own boards.
`sn74ahc14dr-etched.step`	2.2 MB	You want the part with `SN74AHC14DR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 571 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: Texas Instruments datasheet (46 pp, sha256 11cde3006570aaff, 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