‘Industry’s smallest’ single wire I/O expander
Texas Instruments has introduced what it says is the industry's smallest single wire I/O expander.
According to the semiconductor specialist, the TCA5405 allows system designers to control and expand outputs to as many as five, using a single processor general purpose input/output.
TI says the expander reduces the number of connections needed, eliminating 50% of the lines versus I2C, and 75% compared to a serial peripheral interface bus. The device can be implemented in design configurations that require a small footprint, such as cell phones, personal digital assistants, portable media players and portable instrumentation devices such as blood glucose meters and insulin pumps.
The TCA5405 comes in an 8pin, 2.25mm2 RUG micro QFN package.
