MC74ACT14DR2G from onsemi, 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	Schmitt-trigger input to inverter 1. TTL-compatible input thresholds: Vt+ = 2.0 V max, Vt- = 0.8 V min at VCC = 4.5-5.5 V, providing ~1.2 V typical hysteresis.
2	1Y	output	Inverted CMOS output of gate 1 (Y = /A). Sources/sinks up to 24 mA; VOH >= 4.4 V and VOL <= 0.44 V at VCC = 4.5 V.
3	2A	input	Schmitt-trigger input to inverter 2. Same TTL-compatible thresholds and hysteresis as 1A.
4	2Y	output	Inverted CMOS output of gate 2 (Y = /A). +/-24 mA drive capability.
5	3A	input	Schmitt-trigger input to inverter 3.
6	3Y	output	Inverted CMOS output of gate 3 (Y = /A). +/-24 mA drive.
7	GND	power_in	Ground reference (0 V) for the device. All input/output voltages are referenced to this pin.
8	4Y	output	Inverted CMOS output of gate 4 (Y = /A). +/-24 mA drive.
9	4A	input	Schmitt-trigger input to inverter 4.
10	5Y	output	Inverted CMOS output of gate 5 (Y = /A). +/-24 mA drive.
11	5A	input	Schmitt-trigger input to inverter 5.
12	6Y	output	Inverted CMOS output of gate 6 (Y = /A). +/-24 mA drive.
13	6A	input	Schmitt-trigger input to inverter 6.
14	VCC	power_in	Positive supply. Recommended VCC = 4.5-5.5 V for the ACT14 (TTL-input) variant; absolute max -0.5 V to +7.0 V. Bypass locally with a 0.1 uF ceramic to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MC74ACT14DR2GD
MC74ACT14DR2GDG
MC74ACT14DR2G
MC74ACT14DR2GN
MC74ACT14DR2GNG
MC74ACT14DR2GDTR2
MC74ACT14DR2GDTR2G
MC74ACT14DR2GMEL
MC74ACT14DR2GMELG

CAD (KiCad official)

Symbol: MC74ACT14DR2G
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
`mc74act14dr2g.step`	195 KB	You want the bare part, or you mark your own boards.
`mc74act14dr2g-etched.step`	2.5 MB	You want the part with `MC74ACT14DR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 641 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: onsemi datasheet (8 pp, sha256 df4f1a83cbbb5fc0, 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