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TCA9535DBR

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Texas Instruments I/O Expanders, SSOP-24-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TCA9535DBR

Texas Instruments · I/O Expanders · SSOP-24-208mil

TCA9535DBR from Texas Instruments, in a SSOP-24-208mil. 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 INT tri_state Interrupt output pin with open-drain structure; requires external pull-up resistor to VCC.
2 A1 input Address input pin 1; connect directly to VCC or ground.
3 A2 input Address input pin 2; connect directly to VCC or ground.
4 P00 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
5 P01 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
6 P02 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
7 P03 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
8 P04 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
9 P05 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
10 P06 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
11 P07 bidirectional Port 0 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
12 GND power_in Ground connection.
13 P10 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
14 P11 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
15 P12 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
16 P13 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
17 P14 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
18 P15 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
19 P16 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
20 P17 bidirectional Port 1 I/O pin with push-pull structure; configured as input at power-up; individual pin maximum 25mA.
21 A0 input Address input pin 0; connect directly to VCC or ground.
22 SCL input Serial clock input for I2C/SMBus interface; connect to VCC through pull-up resistor.
23 SDA input Serial data input for I2C/SMBus interface; connect to VCC through pull-up resistor.
24 VCC power_in Power supply voltage input; operating range 1.65V to 5.5V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-24-208mil
Category Interface
Pins 24

CAD (KiCad official)

  • Symbol: TCA9535DBR
  • Footprint: Package_SO:SSOP-24_5.3x8.2mm_P0.65mm
  • 3D model: SSOP-24-208mil (KiCad packages3D, STEP)
  • 3D model files: tca9535dbr-etched.step / tca9535dbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tca9535dbr.step / tca9535dbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (49 pp, sha256 1bbc40ac404885ae, retrieved 2026-10-05, 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, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF