# COS4277TR

**COSINE** · Precision Op Amps · TSSOP-14

COS4277TR from COSINE, in a TSSOP-14. 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 | OUT1 | output | Channel 1 output, whose voltage range extends to within millivolts of each supply rail. |
| 2 | -IN1 | input | Channel 1 inverting input, with a voltage range from -Vs to +Vs. |
| 3 | +IN1 | input | Channel 1 non-inverting input, with the same voltage range as -IN (-Vs to +Vs). |
| 4 | +Vs | power_in | Positive power supply, to be bypassed with a 0.1µF capacitor placed as close to the part as possible. |
| 5 | +IN2 | input | Channel 2 non-inverting input, with the same voltage range as -IN (-Vs to +Vs). |
| 6 | -IN2 | input | Channel 2 inverting input, with a voltage range from -Vs to +Vs. |
| 7 | OUT2 | output | Channel 2 output, whose voltage range extends to within millivolts of each supply rail. |
| 8 | OUT3 | output | Channel 3 output, whose voltage range extends to within millivolts of each supply rail. |
| 9 | -IN3 | input | Channel 3 inverting input, with a voltage range from -Vs to +Vs. |
| 10 | +IN3 | input | Channel 3 non-inverting input, with the same voltage range as -IN (-Vs to +Vs). |
| 11 | -Vs | power_in | Negative power supply or ground, to be bypassed with a 0.1µF capacitor placed as close to the part as possible if not connected to ground. |
| 12 | +IN4 | input | Channel 4 non-inverting input, with the same voltage range as -IN (-Vs to +Vs). |
| 13 | -IN4 | input | Channel 4 inverting input, with a voltage range from -Vs to +Vs. |
| 14 | OUT4 | output | Channel 4 output, whose voltage range extends to within millivolts of each supply rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | TSSOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `COS4277TR`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `cos4277tr-etched.step` / `cos4277tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos4277tr.step` / `cos4277tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](docs/cos4277tr-datasheet.pdf) (9 pp, sha256 `fc7e6675fc8999be`, retrieved 2026-11-02, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cos4277tr-datasheet.pdf)