The OSM54L3131P is a high-speed, 4-bit, CMOS, asynchronous FIFO (First In First Out) memory from OptoSupply. This FIFO is designed for operation from a single 5V power supply, and features a full-rate, low-latency architecture for data transfers. It has an asynchronous empty flag output and a full flag input for communication between two systems, and it can store up to 54 bits of data. It is available in a 40-lead MQFP package and is suitable for use in telecommunications, networking, industrial and medical applications.