component
LM2903BQDRQ1
Public Made by Adomby adom
Texas Instruments Comparators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM2903BQDRQ1
Texas Instruments · Comparators · SOIC-8
LM2903BQDRQ1 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 | 1OUT | tri_state | Output pin of comparator 1; open-drain output that sinks current when the negative input voltage is higher than the positive input voltage and the offset voltage. |
| 2 | 1IN- | input | Negative input pin of comparator 1; common-mode input voltage range from (V-) to (V+) - 1.5V over operating temperature range. |
| 3 | 1IN+ | input | Positive input pin of comparator 1; common-mode input voltage range from (V-) to (V+) - 1.5V over operating temperature range. |
| 4 | GND | power_in | Ground reference; connect thermal pad directly to GND pin. |
| 5 | 2IN+ | input | Positive input pin of comparator 2; common-mode input voltage range from (V-) to (V+) - 1.5V over operating temperature range. |
| 6 | 2IN- | input | Negative input pin of comparator 2; common-mode input voltage range from (V-) to (V+) - 1.5V over operating temperature range. |
| 7 | 2OUT | tri_state | Output pin of comparator 2; open-drain output that sinks current when the negative input voltage is higher than the positive input voltage and the offset voltage. |
| 8 | VCC | power_in | Positive supply voltage; 2 to 36V for LM2903B-Q1 with supply voltage difference VS = (V+) - (V-). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2903BQDRQ1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2903bqdrq1-etched.step/lm2903bqdrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2903bqdrq1.step/lm2903bqdrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (47 pp, sha256
765b5f97d419335c, retrieved 2026-09-23, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).