component

TCA6424ARGJR

Public Unreviewed

by Ray

Texas Instruments I/O Expanders, VQFN-32-EP(5x5). Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentinterfacetca6424argjr
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

PCB Footprint

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

Datasheet

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Download PDF
Contents

README

markdown

TCA6424ARGJR

Texas Instruments · I/O Expanders · VQFN-32-EP(5x5)

TCA6424ARGJR from Texas Instruments, in a VQFN-32-EP(5x5). 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 P00 bidirectional P-port 0 bit 0 (push-pull). At power-on configured as an input. Referenced to VCCP.
2 P01 bidirectional P-port 0 bit 1 (push-pull). At power-on configured as an input. Referenced to VCCP.
3 P02 bidirectional P-port 0 bit 2 (push-pull). At power-on configured as an input. Referenced to VCCP.
4 P03 bidirectional P-port 0 bit 3 (push-pull). At power-on configured as an input. Referenced to VCCP.
5 P04 bidirectional P-port 0 bit 4 (push-pull). At power-on configured as an input. Referenced to VCCP.
6 P05 bidirectional P-port 0 bit 5 (push-pull). At power-on configured as an input. Referenced to VCCP.
7 P06 bidirectional P-port 0 bit 6 (push-pull). At power-on configured as an input. Referenced to VCCP.
8 P07 bidirectional P-port 0 bit 7 (push-pull). At power-on configured as an input. Referenced to VCCP.
9 P10 bidirectional P-port 1 bit 0 (push-pull). At power-on configured as an input. Referenced to VCCP.
10 P11 bidirectional P-port 1 bit 1 (push-pull). At power-on configured as an input. Referenced to VCCP.
11 P12 bidirectional P-port 1 bit 2 (push-pull). At power-on configured as an input. Referenced to VCCP.
12 P13 bidirectional P-port 1 bit 3 (push-pull). At power-on configured as an input. Referenced to VCCP.
13 P14 bidirectional P-port 1 bit 4 (push-pull). At power-on configured as an input. Referenced to VCCP.
14 P15 bidirectional P-port 1 bit 5 (push-pull). At power-on configured as an input. Referenced to VCCP.
15 P16 bidirectional P-port 1 bit 6 (push-pull). At power-on configured as an input. Referenced to VCCP.
16 P17 bidirectional P-port 1 bit 7 (push-pull). At power-on configured as an input. Referenced to VCCP.
17 P20 bidirectional P-port 2 bit 0 (push-pull). At power-on configured as an input. Referenced to VCCP.
18 P21 bidirectional P-port 2 bit 1 (push-pull). At power-on configured as an input. Referenced to VCCP.
19 P22 bidirectional P-port 2 bit 2 (push-pull). At power-on configured as an input. Referenced to VCCP.
20 P23 bidirectional P-port 2 bit 3 (push-pull). At power-on configured as an input. Referenced to VCCP.
21 P24 bidirectional P-port 2 bit 4 (push-pull). At power-on configured as an input. Referenced to VCCP.
22 P25 bidirectional P-port 2 bit 5 (push-pull). At power-on configured as an input. Referenced to VCCP.
23 P26 bidirectional P-port 2 bit 6 (push-pull). At power-on configured as an input. Referenced to VCCP.
24 P27 bidirectional P-port 2 bit 7 (push-pull). At power-on configured as an input. Referenced to VCCP.
25 GND power_in Device ground reference.
26 ADDR input I2C address select input. Tie directly to VCCP or GND to select one of two fixed I2C addresses, allowing up to two devices on the same bus.
27 VCCP power_in Supply voltage for the P-port (I/O) side, 1.65 V to 5.5 V. Sets the logic level for P00-P27 and the ADDR input.
28 RESET input Active-low hardware reset input. Connect to VCCI through a pullup resistor if no active drive is used. Asserting low resets registers and I2C/SMBus state machine.
29 SCL input I2C serial clock input. Connect to VCCI through a pullup resistor. Supports up to 400 kHz Fast-mode.
30 SDA bidirectional I2C serial data line, open-drain. Connect to VCCI through a pullup resistor.
31 VCCI power_in Supply voltage for the I2C bus side, 1.65 V to 5.5 V. Connect directly to the VCC of the external I2C controller; sets the reference for SCL/SDA/RESET/INT voltage-level translation.
32 INT output Active-low open-drain interrupt output. Asserted when an input P-port state differs from its corresponding Input Port register. Connect to VCCI through a pullup resistor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(5x5)
Category Interface
Pins 32

Ordering variants

Same part, different packaging or reel option.

  • TCA6424ARGJR
  • TCA6424ARGJRRGJT

CAD (KiCad official)

  • Symbol: TCA6424ARGJR
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (39 pp, sha256 fd64a0f5efd5867b, 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