component
TCA6408AQPWRQ1
Public Made by Adomby adom
Texas Instruments I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTCA6408AQPWRQ1
Texas Instruments · I/O Expanders · TSSOP-16
TCA6408AQPWRQ1 from Texas Instruments, in a TSSOP-16. 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 | VCCI | power_in | Supply voltage for I2C bus; operating voltage range 1.65V to 3.6V; provides voltage level translation. |
| 2 | ADDR | input | Address input; connect directly to VCCP or ground for device selection. |
| 3 | RESET | input | Active-low reset input; VIH = 0.7×VCCI to 3.6V, VIL = -0.5 to 0.3×VCCI; connect to VCCI through pull-up resistor if not actively controlled. |
| 4 | P0 | bidirectional | P-port 0 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 5 | P1 | bidirectional | P-port 1 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 6 | P2 | bidirectional | P-port 2 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 7 | P3 | bidirectional | P-port 3 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 8 | GND | power_in | Ground; return path for supply currents. |
| 9 | P4 | bidirectional | P-port 4 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 10 | P5 | bidirectional | P-port 5 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 11 | P6 | bidirectional | P-port 6 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 12 | P7 | bidirectional | P-port 7 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP. |
| 13 | INT | output | Open-drain active-low interrupt output; maximum continuous output current IOL = 25mA for VO = 0 to VCCI; connect to VCCI through pull-up resistor. |
| 14 | SCL | input | Serial clock bus input for I2C/SMBus interface; VIH = 0.7×VCCI to VCCI, VIL = -0.5 to 0.3×VCCI; connect to VCCI through pull-up resistor. |
| 15 | SDA | bidirectional | Serial data bus input-output for I2C/SMBus interface; VIH = 0.7×VCCI to VCCI, VIL = -0.5 to 0.3×VCCI; maximum output current IOL = 25mA; connect to VCCI through pull-up resistor. |
| 16 | VCCP | power_in | Supply voltage for P-ports; operating voltage range 1.65V to 3.6V; maximum continuous current ICC = 160mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
TCA6408AQPWRQ1 - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
tca6408aqpwrq1-etched.step/tca6408aqpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tca6408aqpwrq1.step/tca6408aqpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
edb72d360821dab7, retrieved 2026-10-01, 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).