component
LM311DRG
Public Made by Adomby adom
HANSCHIP semiconductor Comparators, SOP-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
markdownLM311DRG
HANSCHIP semiconductor · Comparators · SOP-8
LM311DRG from HANSCHIP semiconductor, in a SOP-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 | GND | power_in | Ground pin; the output can be referenced to ground, and the ground-to-VEE voltage is limited to 30 V. |
| 2 | IN+ | input | Non-inverting input (the diagram marks the + input at pin 2); input voltage is rated 15 V with ±15 V supplies and differential input is limited to 30 V. |
| 3 | IN- | input | Inverting input (the diagram marks the - input at pin 3); input voltage is rated 15 V with ±15 V supplies and differential input is limited to 30 V. |
| 4 | VEE | power_in | Negative supply; total supply VCC+VEE is limited to 36 V and the output-to-VEE voltage to 40 V for the LM311. |
| 5 | BALANCE | input | Offset balance pin, used to trim input offset voltage. |
| 6 | BALANCE/STROBE | input | Shared balance and strobe pin; the strobe voltage range is VCC to VCC-5 V, and it must not be tied directly to ground but driven with 3 mA to 5 mA. |
| 7 | OUTPUT | output | Open-collector output that can switch up to 50 V at 50 mA and is rated at 40 V above VEE for the LM311. |
| 8 | VCC | power_in | Positive supply; the device operates from a single 5 V to 30 V supply or ±15 V dual supplies, with total supply limited to 36 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HANSCHIP semiconductor |
| Package | SOP-8 |
| Category | Amplifiers/Comparators |
| 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 (RS ≤ 50 kΩ, TA = +25°C) | VIO | 2 | 7.5 | mV | RS ≤ 50 kΩ, TA = +25°C | 4 | |
| Input offset voltage (RS ≤ 50 kΩ, full temperature range) | VIO | 10 | mV | RS ≤ 50 kΩ, Tlow ≤ TA ≤ Thigh | 4 | ||
| Input offset current (TA = +25°C) | IIO | 1.7 | 50 | nA | TA = +25°C | 4 | |
| Input offset current (full temperature range) | IIO | 70 | nA | Tlow ≤ TA ≤ Thigh | 4 | ||
| Input bias current (TA = +25°C) | IIB | 45 | 250 | nA | TA = +25°C | 4 | |
| Input bias current (full temperature range) | IIB | 300 | nA | Tlow ≤ TA ≤ Thigh | 4 | ||
| Voltage gain | AV | 40 | 200 | V/mV | 4 | ||
| Input voltage range | VICR | -14.5 | 13 | V | Tlow ≤ TA ≤ Thigh | 4 | |
| Positive supply current | ICC | 2.4 | 7.5 | mA | 4 | ||
| Negative supply current | IEE | -1.3 | -5 | mA | 4 | ||
| Total supply voltage (VCC+VEE) | VCC+VEE | 36 | Vdc | TA = +25°C | 3 | ||
| Output to negative supply voltage | VO-VEE | 40 | Vdc | TA = +25°C | 3 | ||
| Ground to negative supply voltage | VEE | 30 | Vdc | TA = +25°C | 3 | ||
| Differential input voltage | VID | 30 | Vdc | TA = +25°C | 3 | ||
| Input voltage | Vin | 15 | Vdc | Note 2 (±15 V supplies) | 3 | ||
| Operating ambient temperature | TA | 0 | 70 | ℃ | LM311 variant | 3 | |
| Operating junction temperature (printed label; symbol Tstg) | Tstg | -65 | 150 | ℃ | 3 | ||
| Lead temperature (soldering) | TLEAD | 245 | ℃ | Soldering, 10 s | 3 |
CAD (KiCad official)
- Symbol:
LM311DRG - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
lm311drg-etched.step/lm311drg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm311drg.step/lm311drg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HANSCHIP semiconductor datasheet (10 pp, sha256
7086d90595913277, retrieved 2026-10-17, 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 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).