# OPA342UA

**Texas Instruments** · Operational Amplifier · SOIC-8

OPA342UA from Texas Instruments, in a SOIC-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 | NC | unconnected | No internal connection on the OPA342 SO-8 package. |
| 2 | -In | input | Inverting input; common-mode range extends 300mV beyond the supply rails, and the input is diode-clamped to the rails with current limited to 10mA. |
| 3 | +In | input | Non-inverting input; common-mode range extends 300mV beyond the supply rails (-0.3V to (V+)+0.3V), and the input is diode-clamped to the rails with current limited to 10mA. |
| 4 | V- | power_in | Negative supply (ground in single-supply use); total supply V+ to V- is specified 2.7V to 5.5V with an absolute maximum of 7.5V. |
| 5 | NC | unconnected | No internal connection on the OPA342 SO-8 package. |
| 6 | Out | output | Rail-to-rail amplifier output swinging to within 1mV of the rails with light loads, with short-circuit current of ±15mA. |
| 7 | V+ | power_in | Positive supply, specified 2.7V to 5.5V (operating 2.5V to 5.5V) and bypassed with 0.01µF ceramic capacitors. |
| 8 | NC | unconnected | No internal connection on the OPA342 SO-8 package. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `OPA342UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa342ua-etched.step` / `opa342ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa342ua.step` / `opa342ua.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/opa2342) (16 pp, sha256 `cbe982f466f77414`, retrieved 2026-10-05, tier: lcsc)
- **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/opa342ua-datasheet.pdf)