# THS4281DR

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

THS4281DR 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; this pin is not connected to the die. |
| 2 | IN- | input | Negative (inverting) input voltage pin; the common-mode input range extends 400 mV beyond the supply rails. |
| 3 | IN+ | input | Positive (non-inverting) input voltage pin; the common-mode input range extends 400 mV beyond the supply rails. |
| 4 | VS- | power_in | Negative supply voltage pin; tie to GND for single-supply operation (dual supply ±1.35 V to ±8.25 V, single supply 2.7 V to 16.5 V per Section 6.3). |
| 5 | NC | unconnected | No internal connection; this pin is not connected to the die. |
| 6 | VOUT | output | Amplifier output voltage pin; the output swings to within 150 mV of the rails with 1-kΩ loads. |
| 7 | VS+ | power_in | Positive supply voltage pin; absolute maximum supply voltage VS- to VS+ is 16.5 V. |
| 8 | NC | unconnected | No internal connection; this pin is not connected to the die. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `THS4281DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ths4281dr-etched.step` / `ths4281dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ths4281dr.step` / `ths4281dr.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/ths4281.pdf) (48 pp, sha256 `97f9620f3f0f3124`, retrieved 2026-10-11, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/ths4281dr-datasheet.pdf)