SN74LVC126ADR 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	1OE	input	Output enable for buffer 1. Active high: when 1OE = H the 1Y output follows 1A; when 1OE = L the 1Y output is placed in the high-impedance (Hi-Z) state.
2	1A	input	Gate 1 data input. CMOS input, 5.5 V tolerant regardless of VCC (1.65-3.6 V), allowing 5 V drivers into a 3.3 V system.
3	1Y	tri_state	Gate 1 3-state output. Drives Y = A when 1OE is high; high-impedance when 1OE is low. Guaranteed drive of ±24 mA at VCC = 3 V.
4	2OE	input	Output enable for buffer 2. Active high: enables 2Y = 2A when H, Hi-Z when L.
5	2A	input	Gate 2 data input. 5.5 V-tolerant CMOS input.
6	2Y	tri_state	Gate 2 3-state output. Y = A when 2OE is high; Hi-Z when 2OE is low.
7	GND	power_in	Ground reference (0 V) for the device.
8	3Y	tri_state	Gate 3 3-state output. Y = A when 3OE is high; Hi-Z when 3OE is low.
9	3A	input	Gate 3 data input. 5.5 V-tolerant CMOS input.
10	3OE	input	Output enable for buffer 3. Active high: enables 3Y = 3A when H, Hi-Z when L.
11	4Y	tri_state	Gate 4 3-state output. Y = A when 4OE is high; Hi-Z when 4OE is low.
12	4A	input	Gate 4 data input. 5.5 V-tolerant CMOS input.
13	4OE	input	Output enable for buffer 4. Active high: enables 4Y = 4A when H, Hi-Z when L.
14	VCC	power_in	Positive supply rail, 1.65 V to 3.6 V operating (1.5 V minimum for data retention). Bypass with a local decoupling capacitor to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN74LVC126ADR
SN74LVC126ADRD
SN74LVC126ADRDBR
SN74LVC126ADRDB
SN74LVC126ADRDGVR
SN74LVC126ADRDGV
SN74LVC126ADRNSR
SN74LVC126ADRNS
SN74LVC126ADRPWR
SN74LVC126ADRPW
SN74LVC126ADRBQAR
SN74LVC126ADRBQA
SN74LVC126ADRRGYR
SN74LVC126ADRRGY

CAD (KiCad official)

Symbol: SN74LVC126ADR
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 (39 pp, sha256 7f8920844d07941b, 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