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LM2903BYDT

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STMicroelectronics Comparators, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM2903BYDT

STMicroelectronics · Comparators · SO-8

LM2903BYDT from STMicroelectronics, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUT1 output Output of comparator 1, which saturates low at 250 mV typ. (Iout = 4 mA) and is compatible with TTL, DTL, ECL, MOS and CMOS logic; the output short-circuit current is approximately 30 mA with infinite short-circuit duration.
2 IN1- input Inverting input of comparator 1; the input common-mode range includes the negative rail (Vcc- to Vcc+ - 1.5 V at 25 °C) and the low input voltage must not be less than -0.3 V.
3 IN1+ input Non-inverting input of comparator 1; the input voltage is limited to -0.3 V to 40 V (absolute maximum) and the input current to 10 mA.
4 VCC- power_in Negative supply rail, 0 V in the specified test conditions and the ground reference for single-supply operation; dual supplies of ±1 V to ±18 V are also possible.
5 IN2+ input Non-inverting input of comparator 2; the input voltage is limited to -0.3 V to 40 V (absolute maximum) and the input current to 10 mA.
6 IN2- input Inverting input of comparator 2; the input common-mode range includes the negative rail (Vcc- to Vcc+ - 1.5 V at 25 °C) and the low input voltage must not be less than -0.3 V.
7 OUT2 output Output of comparator 2, which saturates low at 250 mV typ. (Iout = 4 mA) and is compatible with TTL, DTL, ECL, MOS and CMOS logic; the output short-circuit current is approximately 30 mA with infinite short-circuit duration.
8 VCC+ power_in Positive supply rail, operating range 2 V to 36 V (absolute maximum 40 V for the B-grade device).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SO-8
Category Amplifiers/Comparators
Pins 8

CAD (KiCad official)

  • Symbol: LM2903BYDT
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: lm2903bydt-etched.step / lm2903bydt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2903bydt.step / lm2903bydt.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (20 pp, sha256 bfa6780025a30e66, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF