TJM4558CDT from STMicroelectronics, 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. Short-circuit protected (Ios typ. 20 mA). Output resistance ~75 Ω; output swing ±12 V typical with RL=2kΩ at ±15 V supply.
2	IN1-	input	Inverting input of op-amp channel 1. Input bias current typ. 50 nA; input resistance typ. 2 MΩ; differential input voltage limit ±30 V.
3	IN1+	input	Non-inverting input of op-amp channel 1. Common-mode input range ±12 V at ±15 V supply; CMRR typ. 90 dB.
4	VCC-	power_in	Negative supply rail (VEE). Absolute maximum supply ±22 V; typical operation at ±15 V. May also be tied to GND in single-supply operation.
5	IN2+	input	Non-inverting input of op-amp channel 2. Common-mode input range ±12 V at ±15 V supply; CMRR typ. 90 dB.
6	IN2-	input	Inverting input of op-amp channel 2. Input bias current typ. 50 nA; input resistance typ. 2 MΩ; differential input voltage limit ±30 V.
7	OUT2	output	Output of op-amp channel 2. Short-circuit protected (Ios typ. 20 mA). Output resistance ~75 Ω; output swing ±12 V typical with RL=2kΩ at ±15 V supply.
8	VCC+	power_in	Positive supply rail. Absolute maximum supply ±22 V; typical operation at ±15 V. Total supply current (both amplifiers, no load) typ. 2.3 mA, max 4.5 mA.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TJM4558CDTD
TJM4558CDT
TJM4558CDTN
TJM4558CDTP
TJM4558CDTPT

CAD (KiCad official)

Symbol: TJM4558CDT
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
`tjm4558cdt.step`	122 KB	You want the bare part, or you mark your own boards.
`tjm4558cdt-etched.step`	2.0 MB	You want the part with `TJM4558CDT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 495 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: STMicroelectronics datasheet (7 pp, sha256 602f8be3d40dd15d, retrieved 2026-08-17, tier: lcsc)
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