SN74LVC125APWR from Texas Instruments, in a TSSOP-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	Active-low output enable for buffer 1. When high, output 1Y is placed in a high-impedance (Hi-Z) state. VIH threshold is 2V at VCC=2.7-3.6V; inputs tolerate up to 5.5V.
2	1A	input	Data input for buffer 1. CMOS logic input, 5.5V tolerant. Drives 1Y when 1OE is low.
3	1Y	tri_state	3-state output for buffer 1. Drives IOH up to -24 mA / IOL up to 24 mA at VCC=3V; Hi-Z when 1OE is high.
4	2OE	input	Active-low output enable for buffer 2. When high, output 2Y is placed in a high-impedance state.
5	2A	input	Data input for buffer 2. CMOS logic input, 5.5V tolerant.
6	2Y	tri_state	3-state output for buffer 2. Hi-Z when 2OE is high.
7	GND	power_in	Ground reference (0 V). Return for VCC supply and all logic signals.
8	3Y	tri_state	3-state output for buffer 3. Hi-Z when 3OE is high.
9	3A	input	Data input for buffer 3. CMOS logic input, 5.5V tolerant.
10	3OE	input	Active-low output enable for buffer 3. When high, output 3Y is placed in a high-impedance state.
11	4Y	tri_state	3-state output for buffer 4. Hi-Z when 4OE is high.
12	4A	input	Data input for buffer 4. CMOS logic input, 5.5V tolerant.
13	4OE	input	Active-low output enable for buffer 4. When high, output 4Y is placed in a high-impedance state.
14	VCC	power_in	Positive supply. Operating range 1.65V to 3.6V. Decouple with a 100 nF ceramic capacitor to GND close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN74LVC125APWR
SN74LVC125APWRD
SN74LVC125APWRDB
SN74LVC125APWRNS
SN74LVC125APWRBQA
SN74LVC125APWRRGY

CAD (KiCad official)

Symbol: SN74LVC125APWR
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74lvc125apwr.step`	194 KB	You want the bare part, or you mark your own boards.
`sn74lvc125apwr-etched.step`	2.6 MB	You want the part with `SN74LVC125APWR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 669 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Texas Instruments datasheet (40 pp, sha256 e5f2475398050a7d, 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