# TCA9555RGER ## Description The TCA9555 is a 16-bit I/O expander, designed by Texas Instruments, that is compatible with the I2C and SMBus communication protocols. It operates between 1.65 and 5.5 volts and can be used to extend the functionality of most microcontroller families via the I2C interface. The system master can enable the I/O pins as either inputs or outputs and can invert the polarity of the Input Port register. This part is widely used in applications like servers, personal computers, automation equipment, routers, and other electronics with limited GPIO availability. ## Project Details - **Owner:** jbreidfjord-dev - **Created:** 2/20/2024 - **Last Updated:** 2/20/2024 - **Visibility:** Public - **Manufacturer Part Number:** TCA9555RGER - **Materials:** Component, Material, %/wt Bond Wire, Copper, 99.9884 Bond Wire, Proprietary Materials, 0.008189 Bond Wire, Iron, 0.000682 Bond Wire, Silver, 0.002047 Die Attach Adhesive, Silver, 81.099945 Die Attach Adhesive, Epoxy, 18.900057 Lead Frame, Copper, 99.25 Lead Frame, Chromium, 0.259999 Lead Frame, Tin, 0.250003 Lead Frame, Zinc, 0.240001 Lead Frame Plating, Nickel, 95.12008 Lead Frame Plating, Gold, 0.780019 Lead Frame Plating, Palladium, 4.099904 Mold Compound, Fused Silica, 90.5 Mold Compound, Carbon Black, 0.499998 Mold Compound, Epoxy, 8.999999 Semiconductor Device, Doped Silicon, 100 - **License:** https://creativecommons.org/licenses/by/4.0/ - **Manufacturer Name:** Texas Instruments - **Package or Case Code:** QFN50P500X500X100-29N - **Compliance:** RoHS,Green - **Part Type:** Integrated Circuit - **Datasheet URL:** https://storage.googleapis.com/copilot-datasheets/pdf-upload-eaa9805a5d5e8cab00b4bbae9e17beeefbd3a210fe3068aab9fe401199a2a7d0/a76389f87f99454e02256826a5ed2e703656d48adf402997459f2fd94389c794.pdf?GoogleAccessId=graviton-mvp%40appspot.gserviceaccount.com&Expires=4862057374&Signature=tnVV%2FZpcJ1SYqXU1xjvrz%2F7JAUodudw2iZjLK9V4rpbrFNKw31Ial1xxjLQA9d8%2BTGIuLUi%2BSb%2FHn06rIJqT8%2BHl5EAId6l2d49%2B%2Bx2gnJUFBz%2B6kzljoYOwUnS9FCoBgt9uSWXRvjtdn4bhBuHjEFISfSUdscNMPFh6m7gRnuV%2FqWv6Ym2jhbl0BwuXgGL%2BG3fzmSRwlhSpfqc7moiWHG2VTXmrBS5ik2i8WBW%2B8D43GMWzjo6fNOBDvSsMTmpYCv8zUWE%2FLCjaz8wBh6iUNSD%2FTQLBJ%2Fk708eAbkzttvGYQGcFQUG0Hsi%2BOeURQdB3Tg7QZMhK0Av8TKlpRpf4vQ%3D%3D - **Copies:** 1 *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jbreidfjord-dev/tca9555rger~hl](https://www.flux.ai/jbreidfjord-dev/tca9555rger~hl).* --- *Generated from [https://www.flux.ai/jbreidfjord-dev/tca9555rger~hl](https://www.flux.ai/jbreidfjord-dev/tca9555rger~hl)*