The 74HC245M/TR is a device manufactured by HGSEMI and it's a Logic Buffer, Driver, Receiver, and Transceiver. It is a SOP-20 type surface mount package and is RoHS certified. It is a high-speed CMOS device that offers 24-bit bi-directional buffering in a 20-pin package. It is designed to build connections between TTL/CMOS logic circuits and data busses, such as I2C, SPI, and RS-422/485. It features high noise immunity, high speed operation, low quiescent current, adjustable power-up delay time, and wide operating voltage range. It is suitable for new designs of industrial and consumer applications.