# LM348DR

**Texas Instruments** · Operational Amplifier · SOIC-14

LM348DR 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 | Output of op-amp 1. Class-AB output stage, short-circuit protected, typical peak output swing +/-13 V into >=10 kOhm at +/-15 V supplies. |
| 2 | 1IN- | input | Inverting input of op-amp 1. High-impedance differential input (typ 2.5 MOhm), input bias current 30 nA typ, input offset current 4 nA typ. |
| 3 | 1IN+ | input | Non-inverting input of op-amp 1. Common-mode input range typ +/-12 V at +/-15 V supplies. |
| 4 | VCC+ | power_in | Positive supply voltage. LM348 absolute max +18 V; recommended operating +4 V to +18 V. Shared by all four amplifiers. |
| 5 | 2IN+ | input | Non-inverting input of op-amp 2. Common-mode input range typ +/-12 V at +/-15 V supplies. |
| 6 | 2IN- | input | Inverting input of op-amp 2. High-impedance differential input, typ 2.5 MOhm. |
| 7 | 2OUT | output | Output of op-amp 2. Class-AB output stage, short-circuit protected. |
| 8 | 3OUT | output | Output of op-amp 3. Class-AB output stage, short-circuit protected. |
| 9 | 3IN- | input | Inverting input of op-amp 3. High-impedance differential input, typ 2.5 MOhm. |
| 10 | 3IN+ | input | Non-inverting input of op-amp 3. Common-mode input range typ +/-12 V. |
| 11 | VCC- | power_in | Negative supply voltage. LM348 absolute max -18 V; recommended operating -4 V to -18 V. Shared by all four amplifiers. |
| 12 | 4IN+ | input | Non-inverting input of op-amp 4. Common-mode input range typ +/-12 V. |
| 13 | 4IN- | input | Inverting input of op-amp 4. High-impedance differential input, typ 2.5 MOhm. |
| 14 | 4OUT | output | Output of op-amp 4. Class-AB output stage, short-circuit protected. |

## 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.

- `LM348DR`
- `LM348DR.A`
- `LM348DRE4`
- `LM348DRG4`
- `LM348N`
- `LM348N.A`
- `LM348NSR`
- `LM348NSR.A`
- `LM348DRLM148J`
- `LM348DRLM148J.A`
- `LM348DRLM148JB`
- `LM348DRLM148JB.A`
- `LM348DRLM148FK`
- `LM348DRLM148FKB`

## CAD (KiCad official)

- Symbol: `LM348DR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `lm348dr-etched.step` / `lm348dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm348dr.step` / `lm348dr.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/lm348.pdf) (19 pp, sha256 `8d1c3bca373a7c98`, 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/lm348dr-datasheet.pdf)