The Fairchild/ON Semiconductor 74AC521MTC is an identity comparator that comes in a 20-TSSOP (0.173", 4.40mm Width) package. It operates with a voltage supply source of 2 V ~ 6 V and has a current output high and low of 24mA. The maximum propagation delay @ V, Max CL is 8.5ns @ 5V, 50pF. The 74AC521MTC is a part of the 74AC521 family and is categorized under integrated circuits (ICs). It is now obsolete(EOL), and its estimated EOL date has passed. The 74AC521MTC is also available in alternative parts such as 5962-9098501B2A, 5962R9098501BSA, and 5962-9091601M2A. Its popularity is medium, and the supply and demand status is limited.