Hex Schmitt-trigger inverter in a SOIC-14 package: six independent inverters, each Y = /A, with Schmitt-trigger inputs that add hysteresis (typ 0.9 V at VCC = 4.5 V). The hysteresis cleans up slow, noisy, or bouncing edges, so it is the default for debouncing, squaring up sensor signals, simple RC oscillators, and edge conditioning. Runs 2-6 V.

Pinout

Pin	Name	Type	Function
1	1A	input	Channel 1 Schmitt-trigger input (inverter A1). CMOS input, VIH/VIL set by VT+/VT- hysteresis (typ VT+ 2.5 V, VT- 1.6 V @ Vcc=4.5 V).
2	1Y	output	Channel 1 inverter output (Y = /1A). CMOS push-pull, IOH/IOL up to 5.2 mA @ Vcc=6 V.
3	2A	input	Channel 2 Schmitt-trigger input (inverter A2).
4	2Y	output	Channel 2 inverter output (Y = /2A). CMOS push-pull.
5	3A	input	Channel 3 Schmitt-trigger input (inverter A3).
6	3Y	output	Channel 3 inverter output (Y = /3A).
7	GND	power_in	Ground reference (0 V).
8	4Y	output	Channel 4 inverter output (Y = /4A).
9	4A	input	Channel 4 Schmitt-trigger input (inverter A4).
10	5Y	output	Channel 5 inverter output (Y = /5A).
11	5A	input	Channel 5 Schmitt-trigger input (inverter A5).
12	6Y	output	Channel 6 inverter output (Y = /6A).
13	6A	input	Channel 6 Schmitt-trigger input (inverter A6).
14	VCC	power_in	Positive supply. Recommended 2 V to 6 V (nom 5 V); absolute max 7 V. Bypass with 100 nF to GND close to the pin.

Key specifications

Parameter	Value
Type	Hex Schmitt-trigger inverter
Function	Y = /A (6 independent)
Hysteresis	~0.9 V typ @ VCC = 4.5 V
Supply voltage	2-6 V
Logic family	HC (high-speed CMOS)
Channels	6 inverters
Package	SOIC-14
Body (L×W×H)	8.65 × 3.9 × 1.75 mm

Ordering variants

Same part, different packaging or reel option.

SN74HC14D (SOIC-14, tube)
SN74HC14DR (SOIC-14, tape & reel)

CAD (KiCad official)

Symbol: 74xx:74HC14
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D)

Provenance

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

Datasheet: Texas Instruments datasheet (38 pp, sha256 777ed9379ae69f81, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF