component
LM2903QDRG4Q1
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
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLM2903QDRG4Q1
Texas Instruments · Comparators · SOIC-8
LM2903QDRG4Q1 from Texas Instruments, in a SOIC-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 | 1OUT | output | Output pin of comparator 1 (open-collector output, may be tied to other open-collector outputs). |
| 2 | 1IN- | input | Negative input pin of comparator 1. |
| 3 | 1IN+ | input | Positive input pin of comparator 1. |
| 4 | GND | power_in | Ground. |
| 5 | 2IN+ | input | Positive input pin of comparator 2. |
| 6 | 2IN- | input | Negative input pin of comparator 2. |
| 7 | 2OUT | output | Output pin of comparator 2 (open-collector output, may be tied to other open-collector outputs). |
| 8 | VCC | power_in | Positive supply. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |
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 | 2 | 7 | mV | VO=1.4V, VIC=VIC(min), VCC=5V to MAX, non-A devices, 25°C | 9 | |
| Input offset voltage, full range | VIO | 15 | mV | VO=1.4V, VIC=VIC(min), VCC=5V to MAX, non-A devices, full range | 9 | ||
| Input offset current | IIO | 5 | 50 | nA | VO=1.4V, 25°C | 9 | |
| Input offset current, full range | IIO | 200 | nA | VO=1.4V, full range | 9 | ||
| Input bias current | IIB | -25 | -250 | nA | VO=1.4V, 25°C | 9 | |
| Input bias current, full range | IIB | -500 | nA | VO=1.4V, full range | 9 | ||
| Large-signal differential-voltage amplification | AVD | 25 | 100 | V/mV | VCC=15V, VO=1.4V to 11.4V, RL≥15kΩ to VCC, 25°C | 9 | |
| High-level output current | IOH | 0.1 | 50 | nA | VOH=5V, VID=1V, 25°C | 9 | |
| High-level output current, full range | IOH | 1 | µA | VOH=VCC MAX, VID=1V, full range | 9 | ||
| Low-level output voltage | VOL | 150 | 400 | mV | IOL=4mA, VID=-1V, 25°C | 9 | |
| Low-level output voltage, full range | VOL | 700 | mV | IOL=4mA, VID=-1V, full range | 9 | ||
| Low-level output current | IOL | 6 | mA | VOL=1.5V, VID=-1V, 25°C | 9 | ||
| Supply current | ICC | 0.8 | 1 | mA | RL=∞, VCC=5V, 25°C | 9 | |
| Supply current, full range | ICC | 2.5 | mA | RL=∞, VCC=MAX, full range | 9 | ||
| Supply voltage | VCC | 36 | V | 5 | |||
| Differential input voltage | VID | -36 | 36 | V | 5 | ||
| Input voltage range (either input) | VI | -0.3 | 36 | V | 5 | ||
| Output voltage | VO | 36 | V | 5 | |||
| Output current | IO | 20 | mA | 5 | |||
| Operating virtual-junction temperature | TJ | 150 | °C | 5 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | LM2903-Q1 only | 5 | |
| ESD HBM | V(ESD) | -1000 | 1000 | V | Human body model, AEC Q100-002 | 5 | |
| ESD CDM | V(ESD) | -750 | 750 | V | Charged device model, AEC Q100-011, all pins | 5 | |
| Supply voltage (non-V devices) | VCC | 2 | 30 | V | 6 | ||
| Junction temperature | TJ | -40 | 125 | °C | 6 | ||
| Junction-to-ambient thermal resistance | RθJA | 126 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 74.2 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-board thermal resistance | RθJB | 66.4 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-top characterization parameter | ψJT | 25.4 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-board characterization parameter | ψJB | 65.9 | °C/W | D (SOIC), 8 pins | 6 | ||
| Response time, 100-mV step with 5-mV overdrive | 1.3 | µs | VCC=5V, TA=25°C, RL to 5V through 5.1kΩ, CL=15pF | 9 | |||
| Response time, TTL-level input step | 0.3 | µs | VCC=5V, TA=25°C, RL to 5V through 5.1kΩ, CL=15pF | 9 |
CAD (KiCad official)
- Symbol:
LM2903QDRG4Q1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2903qdrg4q1-etched.step/lm2903qdrg4q1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2903qdrg4q1.step/lm2903qdrg4q1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (45 pp, sha256
3eee41ed36c06a12, retrieved 2026-10-27, tier: manufacturer) - 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 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).