# LMH6550MMX

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

LMH6550MMX from Texas Instruments, in a VSSOP-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 | -IN | input | Negative (inverting) input of the differential amplifier; the absolute maximum input current on pins 1, 2, 7 and 8 is 30 mA. |
| 2 | VCM | input | Output common-mode input; it is one of the pins (1, 2, 7, 8) limited to a 30 mA absolute maximum input current. |
| 3 | V+ | power_in | Positive supply; total supply voltage is recommended at 4.5 V to 12 V, with an absolute maximum of 13.2 V. |
| 4 | +OUT | output | Positive output of the differential amplifier; maximum output current is determined by device power dissipation limits, not a fixed value. |
| 5 | -OUT | output | Negative output of the differential amplifier; maximum output current is determined by device power dissipation limits, not a fixed value. |
| 6 | V- | power_in | Negative supply; total supply voltage is recommended at 4.5 V to 12 V, with an absolute maximum of 13.2 V. |
| 7 | EN | input | Enable input; the pin table gives no logic thresholds or polarity, and the pin is one of the pins (1, 2, 7, 8) limited to a 30 mA absolute maximum input current. |
| 8 | +IN | input | Positive (non-inverting) input of the differential amplifier; the absolute maximum input current on pins 1, 2, 7 and 8 is 30 mA. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LMH6550MMX`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lmh6550mmx-etched.step` / `lmh6550mmx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmh6550mmx.step` / `lmh6550mmx.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/lmh6550) (37 pp, sha256 `0f8f9876d562abe3`, retrieved 2026-10-08, tier: lcsc)
- **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/lmh6550mmx-datasheet.pdf)