# LM386N-3

**Texas Instruments** · Audio Amplifiers · PDIP-8

LM386N-3 from Texas Instruments, in a PDIP-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 | GAIN | passive | Gain setting pin connected with external resistor and capacitor between pins 1 and 8 to configure gain from 20 to 200. |
| 2 | -INPUT | input | Inverting input receiving analog signal with voltage range -0.4 V to +0.4 V with respect to ground. |
| 3 | +INPUT | input | Noninverting input receiving analog signal with voltage range -0.4 V to +0.4 V with respect to ground. |
| 4 | GND | power_in | Ground reference for input bias and output signal return path. |
| 5 | VOUT | output | Output driving speaker loads with impedance from 4 Ω to 32 Ω. |
| 6 | VS | power_in | Power supply voltage pin operating at 4 V to 12 V for LM386N-3. |
| 7 | BYPASS | output | Bypass capacitor connection for frequency compensation and output decoupling. |
| 8 | GAIN | passive | Gain setting pin connected with external resistor and capacitor between pins 8 and 1 to configure gain from 20 to 200. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM386N-3`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `lm386n-3-etched.step` / `lm386n-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm386n-3.step` / `lm386n-3.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/cn/lit/gpn/lm386) (34 pp, sha256 `0fbdb3de058ef6b0`, retrieved 2026-10-05, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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](docs/lm386n-3-datasheet.pdf)