# TCA9555DBT ## Description The TCA9555 by Texas Instruments is a low-voltage, 16-bit I2C and SMBus I/O expander designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface. Operating at a voltage range of 1.65V to 5.5V, this component integrates two 8-bit Configuration, Input Port, Output Port, and Polarity Inversion registers, making it an ideal solution for applications requiring additional I/Os such as servers, personal computers, routers, industrial automation equipment, and products with GPIO-limited processors. The TCA9555 features a low standby-current consumption of 3.5uA maximum, compatibility with 5V I/O ports, a 400kHz Fast I2C Bus, and includes an open-drain active-low interrupt output which enhances its utility in complex systems. Noteworthy for its high-current drive capability suitable for directly driving LEDs, the TCA9555 also brings a configurable slave address with 3 address pins, providing the flexibility needed in varied application requirements. Offering robust protection with latch-up performance exceeding 100mA per JESD 78, Class II, and ESD protection exceeding JESD 22, the TCA9555 combines reliability with expansive functionality for sophisticated electronic designs. ## Project Details - **Owner:** jbreidfjord-dev - **Created:** 2/22/2024 - **Last Updated:** 4/16/2024 - **Visibility:** Public - **Part Type:** Integrated Circuit - **Datasheet URL:** https://cdn2.flux.ai/copilot-datasheets/pdf-upload-eaa9805a5d5e8cab00b4bbae9e17beeefbd3a210fe3068aab9fe401199a2a7d0/a76389f87f99454e02256826a5ed2e703656d48adf402997459f2fd94389c794.pdf?GoogleAccessId=graviton-mvp%40appspot.gserviceaccount.com&Expires=4862190358&Signature=iFtsFCOmFCULUexaBYS1WgdpqqZmcGRTNnVWb0lkXQNOYoOD1yscwRtbWuYl92YJqNRfmGfzY2rQ40OCmTLGNrFe%2BtbS%2FcsuTWkc1WY8qKimhWu6J9TARK%2F%2FqgSXSXO7QxlQIO3nZzx8c5NL%2FrdRLabO3A8E0DClAKcRDaBrwp6vlFh5NA7J7aQ6PYTynj%2BZLP7sOoKEwCBjdAkM5I59zMZpxkPndqJ%2BNAUKWm5e3tdbGue1Kd2H6go3THSLLoYCif6fiQ%2BPGOGgCM0RnqA3iLeXITaIW%2Bp3DGIGinZs4PfBdZvfcrq87lmJZiOVwLmlJCU3hq8jDyHseqW4YSEKQQ%3D%3D - **Compliance:** RoHS, REACH, Conflict Minerals - **Manufacturer Name:** Texas Instruments - **Package or Case Code:** SSOP65P780X200-24N - **Manufacturer Part Number:** TCA9555DBT - **License:** https://creativecommons.org/licenses/by/4.0/ *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jbreidfjord-dev/tca9555dbt](https://www.flux.ai/jbreidfjord-dev/tca9555dbt).* --- *Generated from [https://www.flux.ai/jbreidfjord-dev/tca9555dbt](https://www.flux.ai/jbreidfjord-dev/tca9555dbt)*