# ESD224DQAR

**Texas Instruments** · ESD Protection Devices · USON-10(1x2.5)

ESD224DQAR from Texas Instruments, in a USON-10(1x2.5). 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 | IO1_C | bidirectional | Connector-side ESD-protected I/O channel 1, to be connected to the HDMI connector and paired with system-side pin 10 (IO1_S). |
| 2 | IO2_C | bidirectional | Connector-side ESD-protected I/O channel 2, to be connected to the HDMI connector and paired with system-side pin 9 (IO2_S). |
| 3 | GND | power_in | Ground, to be connected to system ground; the GND pins (3 and 8) are shorted internally. |
| 4 | IO3_C | bidirectional | Connector-side ESD-protected I/O channel 3, to be connected to the HDMI connector and paired with system-side pin 7 (IO3_S). |
| 5 | IO4_C | bidirectional | Connector-side ESD-protected I/O channel 4, to be connected to the HDMI connector and paired with system-side pin 6 (IO4_S). |
| 6 | IO4_S | bidirectional | System-side I/O pin corresponding to IO4_C, to be connected to the system side. |
| 7 | IO3_S | bidirectional | System-side I/O pin corresponding to IO3_C, to be connected to the system side. |
| 8 | GND | power_in | Ground, to be connected to system ground; the GND pins (3 and 8) are shorted internally. |
| 9 | IO2_S | bidirectional | System-side I/O pin corresponding to IO2_C, to be connected to the system side. |
| 10 | IO1_S | bidirectional | System-side I/O pin corresponding to IO1_C, to be connected to the system side. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | USON-10(1x2.5) |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `ESD224DQAR`
- Footprint: `Package_SON:USON-10_2.5x1.0mm_P0.5mm`
- 3D model: USON-10(1x2.5) (KiCad packages3D, STEP)
- 3D model files: `esd224dqar-etched.step` / `esd224dqar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd224dqar.step` / `esd224dqar.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/esd224) (26 pp, sha256 `6cd3f123464db2db`, retrieved 2026-10-08, 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/esd224dqar-datasheet.pdf)