54FCT521 Fast CMOS 8-Bit Identity Comparator

The INTEGRATED DEVICE TECHNOLOGY (IDT) IDT54/74FCT521/A/B/C are 8-bit identity comparators built using an advanced dual metal CMOS technology. These devices compare two words of up to eight bits each and provide a LOW output when the two words match bit for bit. The expansion input IA = B also serves as an active LOW enable input.

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54FCT521ADB	54FCT521BDB	54FCT521DB	54FCT521DMQB
54FCT521DMQB/QS	54FCT521FMQB	54FCT521LB	54FCT521LMQB
54FCT521LMQBC