component

LM319MX

Public Unreviewed

by Ray

Texas Instruments Comparators, SOIC-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmplm319mx
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Datasheet

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Contents

README

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LM319MX

Texas Instruments · Comparators · SOIC-14

LM319MX from Texas Instruments, in a SOIC-14. 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 NC unconnected No internal connection. Leave floating or tie to ground.
2 NC unconnected No internal connection. Leave floating or tie to ground.
3 GND1 power_in Ground reference for comparator 1. Ground pin can be isolated from system ground (up to 18V between GND and V-).
4 +INPUT1 input Non-inverting analog input for comparator 1. Common-mode input range typically ±13V at ±15V supply; differential input range ±5V max. Input bias current typically 250 nA (max 1 µA) at 25°C.
5 -INPUT1 input Inverting analog input for comparator 1. Common-mode input range typically ±13V at ±15V supply; differential input range ±5V max. Input bias current typically 250 nA (max 1 µA) at 25°C.
6 V- power_in Negative supply rail. Typically -15V (dual supply) or 0V (single 5V supply). Total supply voltage (V+ to V-) 36V absolute max.
7 OUTPUT2 output Open-collector output of comparator 2. Uncommitted collector allows pull-up to a separate rail (e.g. 5V logic or up to 36V). Sink current up to 25 mA (VSAT ≤ 1.5 V at 25 mA). Output leakage typically 0.2 µA at 35V.
8 GND2 power_in Ground reference for comparator 2. Independent from GND1 so each comparator's output stage can be isolated from system ground.
9 +INPUT2 input Non-inverting analog input for comparator 2. Common-mode input range typically ±13V at ±15V supply; differential input range ±5V max.
10 -INPUT2 input Inverting analog input for comparator 2. Common-mode input range typically ±13V at ±15V supply; differential input range ±5V max.
11 V+ power_in Positive supply rail. Typically +5V single supply or up to +15V dual supply. Positive supply current typically 8 mA at ±15V (max 12.5 mA).
12 OUTPUT1 output Open-collector output of comparator 1. Uncommitted collector allows pull-up to a separate rail (e.g. 5V logic or up to 36V). Sink current up to 25 mA (VSAT ≤ 1.5 V at 25 mA).
13 NC unconnected No internal connection. Leave floating or tie to ground.
14 NC unconnected No internal connection. Leave floating or tie to ground.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-14
Category Op-amp/Cmp
Pins 14

Ordering variants

Same part, different packaging or reel option.

  • LM319MX
  • LM319AM
  • LM319N
  • LM319AN
  • LM319MXLM119J
  • LM319MXLM119J/883
  • LM319MXLM219J
  • LM319J

CAD (KiCad official)

  • Symbol: LM319MX
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm319mx.step 195 KB You want the bare part, or you mark your own boards.
lm319mx-etched.step 1.7 MB You want the part with LM319MX already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 449 faces against 237 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: Texas Instruments datasheet (11 pp, sha256 40a1a1f6fe4ce4e7, retrieved 2026-08-17, tier: lcsc)
  • 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