# ADS8344NB

**Texas Instruments** · Global Sourcing Parts · SSOP-20-208mil

ADS8344NB from Texas Instruments, in a SSOP-20-208mil. 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 | CH0 | input | Analog input channel 0 to the 8-channel multiplexer. |
| 2 | CH1 | input | Analog input channel 1 to the 8-channel multiplexer. |
| 3 | CH2 | input | Analog input channel 2 to the 8-channel multiplexer. |
| 4 | CH3 | input | Analog input channel 3 to the 8-channel multiplexer. |
| 5 | CH4 | input | Analog input channel 4 to the 8-channel multiplexer. |
| 6 | CH5 | input | Analog input channel 5 to the 8-channel multiplexer. |
| 7 | CH6 | input | Analog input channel 6 to the 8-channel multiplexer. |
| 8 | CH7 | input | Analog input channel 7 to the 8-channel multiplexer. |
| 9 | COM | power_in | Ground reference for the analog inputs; sets the zero-code voltage in single-ended mode and must be connected to ground or a ground reference point. |
| 10 | SHDN | input | Shutdown input; when LOW the device enters a very low-power shutdown mode. |
| 11 | VREF | power_in | Voltage reference input; the permitted range is given in the Electrical Characteristics table. |
| 12 | +VCC | power_in | Power supply, 2.7 V to 5 V. |
| 13 | GND | power_in | Ground. |
| 14 | GND | power_in | Ground. |
| 15 | DOUT | tri_state | Serial data output shifted on the falling edge of DCLK; high impedance when CS is HIGH. |
| 16 | BUSY | tri_state | Busy output that goes LOW while the DIN control bits are being read and while the device is converting; high impedance when CS is HIGH. |
| 17 | DIN | input | Serial data input; data is latched on the rising edge of DCLK when CS is LOW. |
| 18 | CS | input | Active-LOW chip select; data is not clocked into DIN unless CS is LOW, and DOUT is high impedance when CS is HIGH. |
| 19 | DCLK | input | External clock input whose speed sets the conversion rate by fDCLK = 24 × fSAMPLE. |
| 20 | +VCC | power_in | Power supply, 2.7 V to 5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-20-208mil |
| Category | Global Sourcing Parts |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `ADS8344NB`
- Footprint: `Package_SO:SSOP-20_5.3x7.2mm_P0.65mm`
- 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files: `ads8344nb-etched.step` / `ads8344nb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads8344nb.step` / `ads8344nb.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/ads8344) (27 pp, sha256 `f74039c3aa69e1c9`, 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/ads8344nb-datasheet.pdf)