OD2101 chip 14-pin TSSOP package CMOS devices, is a turn provide I2C UART interface solutions dedicated protocol converter chip. The chip can be extended I2C user-friendly interface, the data with RS232, RS485 bus transparent transmission. When the design of the need to expand the microprocessor serial or wish on a separate UART I2C bus devices to exchange data, you can simply use the chip implementations. OD2101 chip with low power consumption (off-state power consumption can be reduced to 10μA below), an internal reset, the internal oscillator and other characteristics, the user can use a very small pin and peripheral circuits on the chip work can be achieved. An I2C bus can support up to 8 OD2101 chips.