component
LM2903BHQDRQ1
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
markdownLM2903BHQDRQ1
Texas Instruments · Comparators · SOIC-8
LM2903BHQDRQ1 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, can be connected to other open-collector outputs; max output voltage 38 V, sink current 25 mA for LM2903B-Q1). |
| 2 | 1IN- | input | Negative input pin of comparator 1; input voltage range -0.3 V to 38 V for LM2903B-Q1. |
| 3 | 1IN+ | input | Positive input pin of comparator 1; input voltage range -0.3 V to 38 V for LM2903B-Q1. |
| 4 | GND | power_in | Ground. |
| 5 | 2IN+ | input | Positive input pin of comparator 2; input voltage range -0.3 V to 38 V for LM2903B-Q1. |
| 6 | 2IN- | input | Negative input pin of comparator 2; input voltage range -0.3 V to 38 V for LM2903B-Q1. |
| 7 | 2OUT | output | Output pin of comparator 2 (open-collector output, can be connected to other open-collector outputs; max output voltage 38 V, sink current 25 mA for LM2903B-Q1). |
| 8 | VCC | power_in | Positive supply; specified 2 V to 36 V for LM2903B-Q1, absolute maximum 38 V. |
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 | -2.5 | 0.37 | 2.5 | mV | VS = 5 to 36V, TA = 25°C | 7 |
| Input offset voltage | VIO | -4 | 4 | mV | VS = 5 to 36V, TA = -40°C to +125°C | 7 | |
| Input bias current | IB | -3.5 | -25 | nA | TA = 25°C | 7 | |
| Input bias current | IB | -50 | nA | TA = -40°C to +125°C | 7 | ||
| Input offset current | IOS | -10 | 0.5 | 10 | nA | TA = 25°C | 7 |
| Input offset current | IOS | -25 | 25 | nA | TA = -40°C to +125°C | 7 | |
| Large signal differential voltage amplification | AVD | 50 | 200 | V/mV | VS = 15V, VO = 1.4V to 11.4V; RL ≥ 15k to (V+) | 7 | |
| Low level output voltage | VOL | 110 | 400 | mV | ISINK ≤ 4mA, VID = -1V | 7 | |
| Low level output voltage | VOL | 550 | mV | ISINK ≤ 4mA, VID = -1V, TA = -40°C to +125°C | 7 | ||
| High-level output leakage current | IOH-LKG | 0.1 | 20 | nA | (V+) = VO = 5 V; VID = 1V | 7 | |
| High-level output leakage current | IOH-LKG | 0.3 | 50 | nA | (V+) = VO = 36V; VID = 1V | 7 | |
| Low level output current | IOL | 6 | 21 | mA | VOL = 1.5V; VID = -1V; VS = 5V | 7 | |
| Quiescent current (all comparators) | IQ | 400 | 600 | µA | VS = 5 V, no load | 7 | |
| Quiescent current (all comparators) | IQ | 550 | 800 | µA | VS = 36 V, no load, TA = -40°C to +125°C | 7 | |
| Propagation delay time, high-to-low; TTL input signal | tresponse | 300 | ns | TTL input with Vref = 1.4V | 7 | ||
| Propagation delay time, high-to-low; small scale input signal | tresponse | 1000 | ns | Input overdrive = 5mV, Input step = 100mV | 7 | ||
| Supply voltage | VS | -0.3 | 38 | V | VS = (V+), (V-) | 5 | |
| Differential input voltage | VID | -38 | 38 | V | IN+ with respect to IN- | 5 | |
| Input pins voltage | -0.3 | 38 | V | IN+, IN- | 5 | ||
| Current into input pins | -50 | mA | IN+, IN- | 5 | |||
| Output pin voltage | -0.3 | 38 | V | OUT | 5 | ||
| Output sink current | 25 | mA | 5 | ||||
| Operating virtual-junction temperature | TJ | 150 | °C | 5 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 5 | ||
| ESD HBM | V(ESD) | -2000 | 2000 | V | Human body model, per AEC Q100-002 | 5 | |
| ESD CDM | V(ESD) | -1000 | 1000 | V | Charged device model, per AEC Q100-011, all pins | 5 | |
| Supply voltage | VS | 2 | 36 | V | VS = (V+), (V-) | 6 | |
| Ambient temperature | TA | -40 | 125 | °C | LM2903B | 6 | |
| Input voltage range | VIVR | -0.1 | V | upper limit (V+), 2 V | 6 | ||
| Junction-to-ambient thermal resistance | RθJA | 148.5 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 90.2 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-board thermal resistance | RθJB | 91.8 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-top characterization parameter | ψJT | 38.5 | °C/W | D (SOIC), 8 pins | 6 | ||
| Junction-to-board characterization parameter | ψJB | 91.1 | °C/W | D (SOIC), 8 pins | 6 |
CAD (KiCad official)
- Symbol:
LM2903BHQDRQ1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2903bhqdrq1-etched.step/lm2903bhqdrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2903bhqdrq1.step/lm2903bhqdrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
69076f90eb22c00c, retrieved 2026-10-23, tier: manufacturer) - 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).