SN74HC05DR 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, Input A. CMOS logic input to inverter 1; VIH >= 4.2 V at VCC = 6 V, VIL <= 1.8 V at VCC = 6 V.
2	1Y	output	Channel 1, Output Y. Open-drain inverting output (Y = /A). Requires external pull-up resistor to VCC; sinks up to 5.2 mA at VCC = 6 V.
3	2A	input	Channel 2, Input A. CMOS logic input to inverter 2.
4	2Y	output	Channel 2, Output Y. Open-drain inverting output (Y = /A). Requires external pull-up.
5	3A	input	Channel 3, Input A. CMOS logic input to inverter 3.
6	3Y	output	Channel 3, Output Y. Open-drain inverting output (Y = /A). Requires external pull-up.
7	GND	power_in	Ground reference (0 V) for the device.
8	4Y	output	Channel 4, Output Y. Open-drain inverting output (Y = /A). Requires external pull-up.
9	4A	input	Channel 4, Input A. CMOS logic input to inverter 4.
10	5Y	output	Channel 5, Output Y. Open-drain inverting output (Y = /A). Requires external pull-up.
11	5A	input	Channel 5, Input A. CMOS logic input to inverter 5.
12	6Y	output	Channel 6, Output Y. Open-drain inverting output (Y = /A). Requires external pull-up.
13	6A	input	Channel 6, Input A. CMOS logic input to inverter 6.
14	VCC	power_in	Positive supply voltage. Recommended operating range 2 V to 6 V (nominal 5 V); absolute max 7 V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN74HC05DR
SN74HC05DRD
SN74HC05DRN
SN74HC05DRNR
SN74HC05DRNS
SN74HC05DRNSR
SN74HC05DRPW
SN74HC05DRPWR
SN74HC05DRJ
SN74HC05DRJR
SN74HC05DRFK
SN74HC05DRFKR

CAD (KiCad official)

Symbol: SN74HC05DR
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: Texas Instruments datasheet (33 pp, sha256 1ca478c361a839a0, 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