# LM56CIMMX

**Texas Instruments** · Temperature Sensors · VSSOP-8

LM56CIMMX 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 | VREF | power_in | 1.250V bandgap voltage reference output that should source a 50 µA load to maintain trip point accuracy. |
| 2 | VT2 | input | Input for the temperature trip point voltage for OUT2, within GND to V+ − 1 V. |
| 3 | VT1 | input | Input for the temperature trip point voltage for OUT1, within GND to V+ − 1 V. |
| 4 | GND | power_in | Ground pin. |
| 5 | VTEMP | output | Temperature sensor output of +6.20 mV/°C x T + 395 mV with a maximum output impedance of 1500 Ω. |
| 6 | OUT2 | output | Open collector active-LOW digital output that goes LOW above the T2 set point and HIGH below T2 − 5°C, not intended to directly drive a fan motor. |
| 7 | OUT1 | output | Open collector active-LOW digital output that goes LOW above T1 and HIGH below T1 − 5°C, not intended to directly drive a fan motor. |
| 8 | V+ | power_in | Positive supply voltage pin, 2.7V to 10V, to be bypassed with a 0.1 µF capacitor to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Sensors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `LM56CIMMX`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm56cimmx-etched.step` / `lm56cimmx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm56cimmx.step` / `lm56cimmx.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/lm56) (26 pp, sha256 `89ae6b9f809a3d1d`, retrieved 2026-10-11, 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/lm56cimmx-datasheet.pdf)