DRV135UA from Texas Instruments, in a SOIC-8. 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	-Vo	output	Inverted balanced differential output. Drives one side of the balanced audio pair; connect to the '-' XLR conductor. Capable of ±85 mA short-circuit current and stable with up to 1 µF load capacitance when tied to ground.
2	-Sense	input	Sensing, inverting input. Feedback sense line for the -Vo output stage; normally connected directly to -Vo (or at the far-end load for remote sensing) to close the feedback loop and preserve balance under cable resistance.
3	Gnd	power_in	Ground reference. Signal ground for the input stage and internal 10 kΩ common-mode reference network.
4	VIN	input	Single-ended audio input. 10 kΩ input impedance (typical). Input voltage range must remain between V- and V+; the differential output swings ±6 dB relative to this signal.
5	V-	power_in	Negative supply. Operating range -4.5 V to -18 V; absolute maximum total (V+ to V-) is 40 V. Quiescent current ±5.2 mA typical.
6	V+	power_in	Positive supply. Operating range +4.5 V to +18 V; absolute maximum total (V+ to V-) is 40 V. Bypass locally with ceramic and bulk capacitance.
7	+Sense	input	Sensing, non-inverting input. Feedback sense line for the +Vo output stage; normally connected directly to +Vo (or at the far-end load for remote sensing) to close the feedback loop.
8	+Vo	output	Balanced differential output. Drives the other side of the balanced audio pair; connect to the '+' XLR conductor. Capable of ±85 mA short-circuit current and stable with up to 1 µF load capacitance when tied to ground.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

DRV135UA
DRV135UAPA
DRV135UAU

CAD (KiCad official)

Symbol: DRV135UA
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`drv135ua.step`	122 KB	You want the bare part, or you mark your own boards.
`drv135ua-etched.step`	1.7 MB	You want the part with `DRV135UA` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 436 faces against 147 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 (33 pp, sha256 fcecb3410962debf, 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