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74F521SC Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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74F521SC Datasheet(HTML) 2 Page - National Semiconductor (TI) |
2 / 8 page Unit LoadingFan Out 54F74F Pin Names Description UL Input IIH IIL HIGHLOW Output IOH IOL A0–A7 Word A Inputs 1010 20 mA b06 mA B0–B7 Word B Inputs 1010 20 mA b06 mA IAeB Expansion or Enable Input (Active LOW) 1010 20 mA b06 mA OAeB Identity Output (Active LOW) 50333 b 1 mA20 mA Truth Table Inputs Output IA e B A B OA e B LA e B L LA i BH HA e B H HA i BH H e HIGH Voltage Level L e LOW Voltage Level A0 e B0 A1 e B1 A2 e B2 etc Connection Diagrams Pin Assignment for DIP SOIC SSOP and Flatpak TLF9545 – 2 Pin Assignment for LCC TLF9545 – 3 Logic Diagram TLF9545 – 5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays 2 |
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