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74ACT521SJ Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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74ACT521SJ Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page © 2005 Fairchild Semiconductor Corporation DS009964 www.fairchildsemi.com November 1988 Revised March 2005 74AC521 • 74ACT521 8-Bit Identity Comparator General Description The AC/ACT521 is an expandable 8-bit comparator. It com- pares two words of up to eight bits each and provides a LOW output when the two words match bit for bit. The expansion input IA B also serves as an active LOW enable input. Features s ICC reduced by 50% s Compares two 8-bit words in 6.5 ns typ s Expandable to any word length s 20-pin package s Outputs source/sink 24 mA s ACT521 has TTL-compatible inputs Ordering Code: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering table. Pb-Free package per JEDEC J-STD-020B. Logic Symbols IEEE/IEC Connection Diagram Pin Descriptions FACT ¥ is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description 74AC521SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74AC521SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74AC521MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC521PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide 74ACT521SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74ACT521SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74ACT521MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74ACT521PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Pin Names Description A0–A7 Word A Inputs B0–B7 Word B Inputs TA B Expansion or Enable Input OA B Identity Output |
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