SN74AHCT08DR 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	Gate 1 input A. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V). Input current ±1 µA max.
2	1B	input	Gate 1 input B. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V). Input current ±1 µA max.
3	1Y	output	Gate 1 output Y = 1A · 1B. CMOS totem-pole output; IOH = -8 mA, IOL = 8 mA at VCC = 4.5 V.
4	2A	input	Gate 2 input A. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V).
5	2B	input	Gate 2 input B. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V).
6	2Y	output	Gate 2 output Y = 2A · 2B. CMOS totem-pole output; IOH = -8 mA, IOL = 8 mA.
7	GND	power_in	Ground reference pin (0 V).
8	3Y	output	Gate 3 output Y = 3A · 3B. CMOS totem-pole output; IOH = -8 mA, IOL = 8 mA.
9	3A	input	Gate 3 input A. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V).
10	3B	input	Gate 3 input B. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V).
11	4Y	output	Gate 4 output Y = 4A · 4B. CMOS totem-pole output; IOH = -8 mA, IOL = 8 mA.
12	4A	input	Gate 4 input A. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V).
13	4B	input	Gate 4 input B. TTL-compatible logic input (VIH ≥ 2 V, VIL ≤ 0.8 V).
14	VCC	power_in	Positive supply voltage. Recommended operating range 4.5 V to 5.5 V; absolute maximum 7 V. Decouple with 0.1 µF to GND close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN74AHCT08DRD
SN74AHCT08DR
SN74AHCT08DRDB
SN74AHCT08DRNS
SN74AHCT08DRPW
SN74AHCT08DRRGY
SN74AHCT08DRJ
SN74AHCT08DRW
SN74AHCT08DRDGV
SN74AHCT08DRN
SN74AHCT08DRFK
SN74AHCT08DRBQA

CAD (KiCad official)

Symbol: SN74AHCT08DR
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 (41 pp, sha256 2b754c2e6411fd64, 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