component

LM75AD

Public Made by Adom

by adom

NXP Semicon 118 Temperature and Humidity Sensor, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lm75ad: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
lm75ad-etched.fit.json lm75ad: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm75ad-etched.glb lm75ad: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm75ad-etched.step lm75ad: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm75ad.glb Publish 0.1.0 · Ray
lm75ad.kicad_mod Publish 0.1.0 · Ray
lm75ad.kicad_sym Publish 0.1.0 · Ray
lm75ad.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
lm75ad.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json lm75ad: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md lm75ad: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

LM75AD

NXP Semicon 118 · Temperature and Humidity Sensor · SOIC-8

LM75AD from NXP Semicon 118, 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 SDA bidirectional I2C-bus serial bidirectional data line; open-drain. Requires an external pull-up (~10 kΩ) to VCC if the bus does not already provide one. Must not be left floating.
2 SCL input I2C-bus serial clock input, driven by the bus master. Requires an external pull-up (~10 kΩ) to VCC if the bus does not already provide one. Must not be left floating.
3 OS output Overtemperature Shutdown output; open-drain. Asserts when Temp exceeds the programmed Tos limit (comparator or interrupt mode selectable). Needs an external pull-up as large as possible, up to 200 kΩ, to minimize self-heating error.
4 GND power_in Ground reference. Connect to system ground.
5 A2 input User-defined I2C slave address bit 2. Tie to GND for logic 0 or VCC for logic 1; must not be left floating (not internally biased).
6 A1 input User-defined I2C slave address bit 1. Tie to GND for logic 0 or VCC for logic 1; must not be left floating (not internally biased).
7 A0 input User-defined I2C slave address bit 0. Tie to GND for logic 0 or VCC for logic 1; must not be left floating (not internally biased).
8 VCC power_in Positive power supply, 2.8 V to 5.5 V. Bypass to GND with a local decoupling capacitor.

Key specifications

Parameter Value
Manufacturer NXP Semicon 118
Package SOIC-8
Category Sensor
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM75AD
  • LM75ADP

CAD (KiCad official)

  • Symbol: LM75AD
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: lm75ad-etched.step / lm75ad-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm75ad.step / lm75ad.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm75ad.step 122 KB You want the bare part, or you mark your own boards.
lm75ad-etched.step 1.1 MB You want the part with LM75AD already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 297 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: NXP Semicon 118 datasheet (24 pp, sha256 fc76b747cd9e78c4, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF