U74HC14G-S14-R from UTC Unisonic Tech, in a SOP-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	Input of Schmitt-trigger inverter 1. Schmitt-trigger input with hysteresis; VIH typ 2.5 V, VIL typ 1.6 V at VCC=4.5 V.
2	1Y	output	Output of Schmitt-trigger inverter 1. Y = A̅. CMOS push-pull output; drives up to 10 LSTTL loads.
3	2A	input	Input of Schmitt-trigger inverter 2. Schmitt-trigger input with hysteresis.
4	2Y	output	Output of Schmitt-trigger inverter 2. Y = A̅.
5	3A	input	Input of Schmitt-trigger inverter 3. Schmitt-trigger input with hysteresis.
6	3Y	output	Output of Schmitt-trigger inverter 3. Y = A̅.
7	GND	power_in	Ground reference (0 V). All logic levels referenced to this pin.
8	4Y	output	Output of Schmitt-trigger inverter 4. Y = A̅.
9	4A	input	Input of Schmitt-trigger inverter 4. Schmitt-trigger input with hysteresis.
10	5Y	output	Output of Schmitt-trigger inverter 5. Y = A̅.
11	5A	input	Input of Schmitt-trigger inverter 5. Schmitt-trigger input with hysteresis.
12	6Y	output	Output of Schmitt-trigger inverter 6. Y = A̅.
13	6A	input	Input of Schmitt-trigger inverter 6. Schmitt-trigger input with hysteresis.
14	VCC	power_in	Positive supply voltage. Recommended operating range 2 V to 6 V (absolute max 7 V). Decouple locally with a 100 nF ceramic capacitor to GND.

Key specifications

Parameter	Value
Manufacturer	UTC Unisonic Tech
Package	SOP-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

U74HC14G-S14-R
U74HC14G-S14-RL-S14-R
U74HC14G-S14-RG-D14-T
U74HC14G-S14-RL-D14-T
U74HC14G-S14-RG-P14-R
U74HC14G-S14-RL-P14-R

CAD (KiCad official)

Symbol: U74HC14G-S14-R
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOP-14 (KiCad packages3D, STEP)

Provenance

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

Datasheet: UTC Unisonic Tech datasheet (6 pp, sha256 1e3ae482ca16e08d, 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