# LMH6574MAX

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SOIC-14

LMH6574MAX from Texas Instruments, in a SOIC-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 | IN0 | input | Input Channel 0, one of four multiplexer signal inputs selected by A1/A0 when EN and SD are low; signal and logic input pins are limited to ±(VS+0.6) V and ±20 mA. |
| 2 | GND | power_in | Ground pin. |
| 3 | IN1 | input | Input Channel 1, one of four multiplexer signal inputs selected by A1/A0 when EN and SD are low; signal and logic input pins are limited to ±(VS+0.6) V and ±20 mA. |
| 4 | GND | power_in | Ground pin. |
| 5 | IN2 | input | Input Channel 2, one of four multiplexer signal inputs selected by A1/A0 when EN and SD are low; signal and logic input pins are limited to ±(VS+0.6) V and ±20 mA. |
| 6 | V- | power_in | Negative supply; the recommended supply voltage is 6 V to 12 V (V+ − V−) with an absolute maximum of 13.2 V. |
| 7 | IN3 | input | Input Channel 3, one of four multiplexer signal inputs selected by A1/A0 when EN and SD are low; signal and logic input pins are limited to ±(VS+0.6) V and ±20 mA. |
| 8 | A0 | input | Select pin A0; together with A1 it chooses the active input channel per the truth table (A1 A0 = 00 selects CH0, 01 selects CH1, 10 selects CH2, 11 selects CH3 when EN and SD are low). |
| 9 | A1 | input | Select pin A1; together with A0 it chooses the active input channel per the truth table (A1 A0 = 00 selects CH0, 01 selects CH1, 10 selects CH2, 11 selects CH3 when EN and SD are low). |
| 10 | EN | input | Enable input; with EN high and SD low the output is disabled, per the truth table. |
| 11 | SD | input | Shutdown input; with SD high the device is in shutdown regardless of the other inputs, per the truth table. |
| 12 | FB | input | Feedback pin; external feedback and gain-setting resistors connect here to set the closed-loop gain. |
| 13 | OUT | output | Output pin; the datasheet summary states 80 mA of linear output current, and the absolute maximum IOUT is 130 mA (limited by power dissipation and a 150 °C junction temperature). |
| 14 | V+ | power_in | Positive supply; the recommended supply voltage is 6 V to 12 V (V+ − V−) with an absolute maximum of 13.2 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `LMH6574MAX`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `lmh6574max-etched.step` / `lmh6574max-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmh6574max.step` / `lmh6574max.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/lmh6574) (31 pp, sha256 `557eae73231341ef`, retrieved 2026-10-10, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/lmh6574max-datasheet.pdf)