component

LM2903DT

Public Made by Adom

by adom

STMicroelectronics Comparators, SO-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentop-amp-cmplm2903dt
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Contents

README

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LM2903DT

STMicroelectronics · Comparators · SO-8

LM2903DT from STMicroelectronics, in a SO-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 Open-collector output of comparator 1. Requires an external pull-up resistor to a positive supply. Sinks current when the non-inverting input is below the inverting input.
2 VCC power_in Positive supply voltage. Operating range 2 V to 36 V single supply, or ±1 V to ±18 V dual supply.
3 IN1+ input Non-inverting input of comparator 1. Low input bias current (typ. 25 nA).
4 IN1- input Inverting input of comparator 1. Input common-mode range extends down to the negative supply (ground in single-supply operation).
5 IN2+ input Non-inverting input of comparator 2. Low input bias current (typ. 25 nA).
6 IN2- input Inverting input of comparator 2. Input common-mode range extends down to the negative supply (ground in single-supply operation).
7 GND power_in Ground / negative supply pin. Connect to 0 V in single-supply operation or to V- in dual-supply operation.
8 OUT2 output Open-collector output of comparator 2. Requires an external pull-up resistor to a positive supply. Sinks current when the non-inverting input is below the inverting input.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM2903DT
  • LM2903DTD
  • LM2903DTDR
  • LM2903DTST
  • LM2903DTN

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input offset voltage Vio 1 7 mV VCC+ = 5 V, Tamb = 25 °C (table default) 5
Input offset voltage (over temperature) Vio 15 mV Tmin ≤ Tamb ≤ Tmax 5
Input offset current Iio 5 50 nA VCC+ = 5 V, Tamb = 25 °C (table default) 5
Input offset current (over temperature) Iio 150 nA Tmin ≤ Tamb ≤ Tmax 5
Input bias current Iib 25 250 nA VCC+ = 5 V, Tamb = 25 °C (table default) 5
Input bias current (over temperature) Iib 400 nA Tmin ≤ Tamb ≤ Tmax 5
Large signal voltage gain Avd 25 200 V/mV VCC = 15 V, RL = 15 kΩ, Vo = 1 to 11 V 5
Supply current (all comparators) ICC 0.4 1 mA VCC = 5 V, no load 5
Supply current (all comparators) ICC 1 2.5 mA VCC = 30 V, no load 5
Low level output voltage VOL 250 400 mV Vid = -1 V, Isink = 4 mA, VCC+ = 5 V, Tamb = 25 °C (table default) 5
Low level output voltage (over temperature) VOL 700 mV Vid = -1 V, Isink = 4 mA, Tmin ≤ Tamb ≤ Tmax 5
High level output current IOH 0.1 1 nA VCC = Vo = 30 V, Vid = 1 V, Tamb = 25 °C (table default) 5
High level output current (over temperature) IOH 1 µA VCC = Vo = 30 V, Vid = 1 V, Tmin ≤ Tamb ≤ Tmax 5
Output sink current Isink 6 16 mA Vid = -1 V, Vo = 1.5 V 5
Common mode input voltage range (lower limit 0 V; upper limit printed as VCC+ -1.5 V) Vicm 0 V 4
Common mode input voltage range (lower limit 0 V; upper limit printed as VCC+ -2 V) Vicm 0 V Tmin ≤ Tamb ≤ Tmax 4
Operating free-air temperature range Toper -40 125 °C 4
Supply voltage (printed as ±18 or 36 V) VCC 36 V 4
Differential input voltage Vid -36 36 V 4
Input voltage Vin -0.3 36 V 4
ESD human body model HBM 800 V Human body model (100 pF, 1.5 kΩ) 4
ESD machine model MM 200 V Machine model (200 pF) 4
ESD charged device model (all packages except MiniSO8) CDM 1.5 kV Charged device model 4
Maximum junction temperature Tj 150 °C 4
Storage temperature range Tstg -65 150 °C 4
Thermal resistance junction to ambient (SO8) Rthja 125 °C/W SO8 package; values are typical 4
Thermal resistance junction to case (SO8) Rthjc 40 °C/W SO8 package; values are typical 4

CAD (KiCad official)

  • Symbol: LM2903DT
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: lm2903dt-etched.step / lm2903dt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2903dt.step / lm2903dt.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2903dt.step 122 KB You want the bare part, or you mark your own boards.
lm2903dt-etched.step 1.8 MB You want the part with LM2903DT already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 441 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 (19 pp, sha256 b7a4a6d1de452b65, 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