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74ACT139 Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor |
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74ACT139 Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page © 1999 Fairchild Semiconductor Corporation DS009926 www.fairchildsemi.com November 1988 Revised November 1999 74AC139 • 74ACT139 Dual 1-of-4 Decoder/Demultiplexer General Description The AC/ACT139 is a high-speed, dual 1-of-4 decoder/ demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutually- exclusive active-LOW outputs. Each decoder has an active-LOW Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the AC/ ACT139 can be used as a function generator providing all four minterms of two variables. Features s ICC reduced by 50% s Multifunction capability s Two completely independent 1-of-4 decoders s Active LOW mutually exclusive outputs s Outputs source/sink 24 mA s ACT139 has TTL-compatible inputs Ordering Code: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Connection Diagram Pin Descriptions FACT is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description 74AC139SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body 74AC139SJ M16D 16-Lead Small Outline Package (SOIC), EIAJ Type II, 5.3mm Wide 74AC139MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC139PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide 74ACT139SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body 74ACT139SJ M16D 16-Lead Small Outline Package (SOIC), EIAJ Type II, 5.3mm Wide 74ACT139MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74ACT139PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Pin Names Description A0, A1 Address Inputs E Enable Inputs O0–O3 Outputs |
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