74HC02M from HGSEMI, 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	Y1	output	Gate 1 NOR output. Y1 = NOT(A1 + B1). CMOS output capable of driving 10 LSTTL loads; VOH >= VCC-0.1 V and VOL <= 0.1 V at
2	A1	input	Gate 1 NOR input A. High-impedance CMOS input; VIH >= 0.7VCC and VIL <= 0.3VCC (approx). Maximum input leakage 1.0 uA. Unused inputs must be tied to VCC or GND.
3	B1	input	Gate 1 NOR input B. High-impedance CMOS input; must be tied to a valid logic level (unused inputs to VCC or GND).
4	Y2	output	Gate 2 NOR output. Y2 = NOT(A2 + B2). CMOS push-pull output; drives 10 LSTTL loads.
5	A2	input	Gate 2 NOR input A. High-impedance CMOS input.
6	B2	input	Gate 2 NOR input B. High-impedance CMOS input.
7	GND	power_in	Device ground / 0 V reference. All inputs and outputs are referenced to GND.
8	A3	input	Gate 3 NOR input A. High-impedance CMOS input.
9	B3	input	Gate 3 NOR input B. High-impedance CMOS input.
10	Y3	output	Gate 3 NOR output. Y3 = NOT(A3 + B3). CMOS push-pull output.
11	A4	input	Gate 4 NOR input A. High-impedance CMOS input.
12	B4	input	Gate 4 NOR input B. High-impedance CMOS input.
13	Y4	output	Gate 4 NOR output. Y4 = NOT(A4 + B4). CMOS push-pull output.
14	VCC	power_in	Positive supply. Operating range 2.0 V to 6.0 V (absolute maximum 7.0 V). Bypass locally to GND with a 0.1 uF ceramic capacitor.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

74HC02MM/TR
74HC02MN
74HC02MMT/TR
74HC02MLQ/TR

CAD (KiCad official)

Symbol: 74HC02M
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HGSEMI datasheet (9 pp, sha256 868940124e153af6, 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