LM2904BIDR 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	OUT1	output	Output of op-amp channel 1. Class-AB output stage capable of sourcing/sinking load current; short-circuit protected to ground for VS ≤ 15V.
2	IN1-	input	Inverting (negative) input of op-amp channel 1. Absolute maximum differential input voltage ±32V; input voltage range −0.3V to 40V (LM2904B).
3	IN1+	input	Non-inverting (positive) input of op-amp channel 1. Common-mode input range extends to V− (ground), enabling true single-supply operation.
4	V-	power_in	Negative (lowest) supply rail, or ground for single-supply operation. Total supply VS = (V+) − (V−) range 3V to 36V (LM2904B), absolute max ±20V or 40V total.
5	IN2+	input	Non-inverting (positive) input of op-amp channel 2. Common-mode input range includes V− (ground); typical input bias current 10nA, max 35nA.
6	IN2-	input	Inverting (negative) input of op-amp channel 2. Max input offset voltage 3mV at 25°C for the B version.
7	OUT2	output	Output of op-amp channel 2. Class-AB output; short-circuit protected to ground for VS ≤ 15V with unlimited duration at TA = 25°C.
8	V+	power_in	Positive (highest) supply rail. Operating supply 3V to 36V (LM2904B); integrated RF/EMI filtering on the supply for improved noise immunity.

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.

LM2904BIDR
LM2904BIDRIDGKR
LM2904BIDRIDGK
LM2904BIDRIPWR
LM2904BIDRIPW
LM2904BIDRIDDFR
LM2904BIDRIDDF

CAD (KiCad official)

Symbol: LM2904BIDR
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
`lm2904bidr.step`	122 KB	You want the bare part, or you mark your own boards.
`lm2904bidr-etched.step`	2.1 MB	You want the part with `LM2904BIDR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 525 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 (68 pp, sha256 ef646b009b0524a8, 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