# LP339DR

**Texas Instruments** · Comparators · SOIC-14

LP339DR 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 | 1OUT | output | Open-collector output of comparator 1. Requires an external pull-up resistor to a positive supply. Sinks current when the inverting input is above the non-inverting input. |
| 2 | 2OUT | output | Open-collector output of comparator 2. Requires an external pull-up resistor to a positive supply. |
| 3 | V+ | power_in | Positive supply voltage. Single-supply operation 2 V to 36 V or dual-supply ±1 V to ±18 V. |
| 4 | 2IN- | input | Inverting input of comparator 2. Common-mode input range includes ground (V-). |
| 5 | 2IN+ | input | Non-inverting input of comparator 2. Common-mode input range includes ground (V-). |
| 6 | 1IN- | input | Inverting input of comparator 1. Common-mode input range includes ground (V-). |
| 7 | 1IN+ | input | Non-inverting input of comparator 1. Common-mode input range includes ground (V-). |
| 8 | 3IN+ | input | Non-inverting input of comparator 3. Common-mode input range includes ground (V-). |
| 9 | 3IN- | input | Inverting input of comparator 3. Common-mode input range includes ground (V-). |
| 10 | 4IN+ | input | Non-inverting input of comparator 4. Common-mode input range includes ground (V-). |
| 11 | 4IN- | input | Inverting input of comparator 4. Common-mode input range includes ground (V-). |
| 12 | GND | power_in | Ground / negative supply (V-). Tie to system ground in single-supply operation, or to the negative rail in dual-supply operation. |
| 13 | 4OUT | output | Open-collector output of comparator 4. Requires an external pull-up resistor to a positive supply. |
| 14 | 3OUT | output | Open-collector output of comparator 3. Requires an external pull-up resistor to a positive supply. |

## 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.

- `LP339DR`
- `LP339DRD`
- `LP339DRPWR`
- `LP339DRPW`

## CAD (KiCad official)

- Symbol: `LP339DR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `lp339dr-etched.step` / `lp339dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp339dr.step` / `lp339dr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lp339.pdf) (15 pp, sha256 `568cdf139073fc1a`, 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](docs/lp339dr-datasheet.pdf)