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TCA6408APWR

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Texas Instruments I/O Expanders, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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TCA6408APWR

Texas Instruments · I/O Expanders · TSSOP-16

TCA6408APWR 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 VCCI power_in Supply voltage of I2C bus, 1.65 V to 5.5 V, provides voltage level translation.
2 ADDR input Address input connected directly to VCCP or ground for I2C device address selection.
3 RESET input Active-low reset input requiring pull-up resistor to VCCI if no active connection is used.
4 P0 bidirectional P-port 0 input/output with push-pull design structure, configured as input at power-on.
5 P1 bidirectional P-port 1 input/output with push-pull design structure, configured as input at power-on.
6 P2 bidirectional P-port 2 input/output with push-pull design structure, configured as input at power-on.
7 P3 bidirectional P-port 3 input/output with push-pull design structure, configured as input at power-on.
8 GND power_in Ground connection.
9 P4 bidirectional P-port 4 input/output with push-pull design structure, configured as input at power-on.
10 P5 bidirectional P-port 5 input/output with push-pull design structure, configured as input at power-on.
11 P6 bidirectional P-port 6 input/output with push-pull design structure, configured as input at power-on.
12 P7 bidirectional P-port 7 input/output with push-pull design structure, configured as input at power-on.
13 INT output Interrupt output with open-drain structure requiring pull-up resistor to VCCI.
14 SCL bidirectional Serial clock bus with open-drain structure requiring pull-up resistor to VCCI.
15 SDA bidirectional Serial data bus with open-drain structure requiring pull-up resistor to VCCI.
16 VCCP power_in Supply voltage for P-ports, 1.65 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-16
Category Interface
Pins 16

CAD (KiCad official)

  • Symbol: TCA6408APWR
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: tca6408apwr-etched.step / tca6408apwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tca6408apwr.step / tca6408apwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (50 pp, sha256 4e444553aa8bf678, retrieved 2026-09-18, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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