TCA9534PWR

@@ -0,0 +1,58 @@+# TCA9534PWR++**Texas Instruments** · I/O Expanders · TSSOP-16++TCA9534PWR from Texas Instruments, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | A0 | input | Hardware I2C slave address input bit 0. Connect directly to VCC or GND to set the device address. Used together with A1 and A2 to allow up to eight TCA9534 devices on the same I2C bus. |+| 2 | A1 | input | Hardware I2C slave address input bit 1. Connect directly to VCC or GND. Combined with A0 and A2 sets the 7-bit I2C address. |+| 3 | A2 | input | Hardware I2C slave address input bit 2. Connect directly to VCC or GND. Combined with A0 and A1 sets the 7-bit I2C address. |+| 4 | P0 | bidirectional | P-port bit 0. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. IOH up to -10 mA and IOL up to 25 mA per pin (subject to total device current limits). |+| 5 | P1 | bidirectional | P-port bit 1. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 6 | P2 | bidirectional | P-port bit 2. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 7 | P3 | bidirectional | P-port bit 3. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 8 | GND | power_in | Ground reference (0 V) for the device. |+| 9 | P4 | bidirectional | P-port bit 4. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 10 | P5 | bidirectional | P-port bit 5. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 11 | P6 | bidirectional | P-port bit 6. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 12 | P7 | bidirectional | P-port bit 7. Push-pull general-purpose I/O; configured as an input at power-on. 5-V tolerant. |+| 13 | INT | output | Open-drain, active-low interrupt output. Asserts when an input port pin changes state; connect to VCC through a pull-up resistor. IOL must be externally limited to 7 mA maximum. |+| 14 | SCL | input | I2C serial clock bus input. Open-drain; connect to VCC through a pull-up resistor. Supports 100-kHz Standard-mode and 400-kHz Fast-mode. 5-V tolerant. |+| 15 | SDA | bidirectional | I2C serial data bus. Open-drain bidirectional; connect to VCC through a pull-up resistor. 5-V tolerant; SDA current must be externally limited to 12 mA max. |+| 16 | VCC | power_in | Supply voltage input. Operating range 1.65 V to 5.5 V. Bypass to GND with a local decoupling capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `TCA9534PWRPWR`+- `TCA9534PWRPW`+- `TCA9534PWRDW`+- `TCA9534PWRDWR`++## CAD (KiCad official)++- Symbol: `TCA9534PWR`+- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`+- 3D model: TSSOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tca9534.pdf) (42 pp, sha256 `797c1fc96502df7c`, retrieved 2026-08-17, tier: manufacturer)+- **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/tca9534pwr-datasheet.pdf)

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