tca6416artwr

@@ -0,0 +1,69 @@+# TCA6416ARTWR++**Texas Instruments** · I/O Expanders · WQFN-24-EP(4x4)++TCA6416ARTWR from Texas Instruments, in a WQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 22 | INT | output | Active-low interrupt output. Open-drain; connect to VCCI or VCCP through a pull-up resistor. Asserted when a P-port input changes state. |+| 23 | VCCI | power_in | Supply voltage for the I2C-bus side (1.65 V to 5.5 V). Connect directly to the supply voltage of the external I2C controller. |+| 24 | RESET | input | Active-low reset input. Connect to VCCI or VCCP through a pull-up resistor if no active connection is used. Resets registers to default power-on values. |+| 1 | P00 | bidirectional | P-port 0 bit 0. Push-pull I/O structure. Configured as an input at power-on. Referenced to VCCP (1.65 V to 5.5 V). |+| 2 | P01 | bidirectional | P-port 0 bit 1. Push-pull I/O structure. Configured as an input at power-on. |+| 3 | P02 | bidirectional | P-port 0 bit 2. Push-pull I/O structure. Configured as an input at power-on. |+| 4 | P03 | bidirectional | P-port 0 bit 3. Push-pull I/O structure. Configured as an input at power-on. |+| 5 | P04 | bidirectional | P-port 0 bit 4. Push-pull I/O structure. Configured as an input at power-on. |+| 6 | P05 | bidirectional | P-port 0 bit 5. Push-pull I/O structure. Configured as an input at power-on. |+| 7 | P06 | bidirectional | P-port 0 bit 6. Push-pull I/O structure. Configured as an input at power-on. |+| 8 | P07 | bidirectional | P-port 0 bit 7. Push-pull I/O structure. Configured as an input at power-on. |+| 9 | GND | power_in | Ground reference for the device (both VCCI and VCCP domains). |+| 10 | P10 | bidirectional | P-port 1 bit 0. Push-pull I/O structure. Configured as an input at power-on. |+| 11 | P11 | bidirectional | P-port 1 bit 1. Push-pull I/O structure. Configured as an input at power-on. |+| 12 | P12 | bidirectional | P-port 1 bit 2. Push-pull I/O structure. Configured as an input at power-on. |+| 13 | P13 | bidirectional | P-port 1 bit 3. Push-pull I/O structure. Configured as an input at power-on. |+| 14 | P14 | bidirectional | P-port 1 bit 4. Push-pull I/O structure. Configured as an input at power-on. |+| 15 | P15 | bidirectional | P-port 1 bit 5. Push-pull I/O structure. Configured as an input at power-on. |+| 16 | P16 | bidirectional | P-port 1 bit 6. Push-pull I/O structure. Configured as an input at power-on. |+| 17 | P17 | bidirectional | P-port 1 bit 7. Push-pull I/O structure. Configured as an input at power-on. |+| 18 | ADDR | input | I2C slave-address select input. Connect directly to VCCP or GND to select one of two addresses, allowing two TCA6416A devices on the same bus. |+| 19 | SCL | input | I2C/SMBus serial clock input. Connect to VCCI through a pull-up resistor. Supports 100 kHz standard mode and 400 kHz fast mode. |+| 20 | SDA | bidirectional | I2C/SMBus serial data line. Open-drain; connect to VCCI through a pull-up resistor. |+| 21 | VCCP | power_in | Supply voltage for the P-port I/O side of the TCA6416A (1.65 V to 5.5 V). Independent from VCCI to allow voltage-level translation. |+| 25 | Thermal Pad | passive | Exposed thermal/die pad on the underside of the WQFN package. Connect to GND for best thermal performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-24-EP(4x4) |+| Category | Comm/UART |+| Pins | 25 |++## Ordering variants++- `TCA6416ARTWR`+- `TCA6416ARTWRRTWT`+- `TCA6416ARTWRPWR`+- `TCA6416ARTWRPW`+- `TCA6416ARTWRZQSR`++## CAD (KiCad official)++- Symbol: `TCA6416ARTWR`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm`+- 3D model: WQFN-24-EP(4x4) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](docs/tca6416artwr-datasheet.pdf) (45 pp, sha256 `6bdaf310c12185a8`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tca6416artwr-datasheet.pdf)

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