component

LP311DR

Public Made by Adom

by adom

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

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Generated by kicad-footprint-generator · KiCad file format 20260206
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lp311dr-hero.glb lp311dr: hero GLB from the etched model (keeps the MPN mark) · Ray 21h ago
lp311dr-hero.overlay.json Publish 0.1.0 · Ray 1d ago
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LP311DR

Texas Instruments · Comparators · SOIC-8

LP311DR 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 EMIT OUT output Emitter output, which can swing below the negative supply; voltage from emitter output to VCC− is rated at 30 V maximum.
2 IN+ input Non-inverting comparator input; with
3 IN− input Inverting comparator input; with
4 VCC− power_in Negative supply rail; the supply voltage VCC+ − VCC− is specified from 3.5 V to 30 V.
5 BALANCE passive Offset-balancing pin used with a trim network to minimize input offset voltage; if offset balancing is not used, it should be shorted to BAL/STRB.
6 BAL/STRB input Strobe input that turns the output off regardless of the inputs when pulled low; it must be current driven at 100 µA to 300 µA and must not be connected directly to ground.
7 COL OUT output Collector output with 25 mA drive capability; voltage from collector output to VCC− is rated at 40 V maximum.
8 VCC+ power_in Positive supply rail; the supply voltage VCC+ − VCC− is specified from 3.5 V to 30 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Amplifiers/Comparators
Pins 8

CAD (KiCad official)

  • Symbol: LP311DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: lp311dr-etched.step / lp311dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp311dr.step / lp311dr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (14 pp, sha256 3c7d5a253861da53, retrieved 2026-10-08, tier: manufacturer)
  • 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