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TCA9535PWR Breakout
IC EXPANDER I2C 16-BIT 400KHZ TSSOP24
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Design a Custom BoardAbout This Component
16-bit I2C-compatible I/O expander with independent input and output configuration for each pin. Operates at 400kHz I2C bus speed with SMBus compatibility. Typical applications include adding GPIO pins to microcontroller systems, keypad scanning, LED control, and general-purpose digital I/O expansion in space-constrained designs.
Package: TSSOP-24 (4.4×7.8mm) · 24 pins
Why does this need a breakout?
Hand-soldering 0.65mm pitch traces is difficult without proper equipment; a breakout board with standard 0.1in header spacing lets you breadboard-prototype and test these compact devices easily. Commonly used for I2C/SMBus I/O expanders and mixed-signal microcontrollers, this breakout eliminates fine-pitch soldering and allows rapid iteration during development.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Texas Instruments |
| Part Number | TCA9535PWR |
| Package | TSSOP-24 (4.4×7.8mm) |
| Pin Count | 24 |
| Clock Frequency | 400 kHz |
| Interface | I2C, SMBus |
| Number of I/O | 16 |
| Output Type | Push-Pull |
| Voltage - Supply | 1.65V ~ 5.5V |
What's Included
BILL OF MATERIALS
- 1x TCA9535PWR soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS