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HCF40181BM1 Datasheet(PDF) 3 Page - STMicroelectronics |
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HCF40181BM1 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 12 page RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit VDD Supply Voltage : HCC Types HCF Types 3to 18 3to 15 V V VI Input Voltage 0 to VDD V T op Operating Temperature : HCC Types HCF Types – 55 to + 125 –40 to + 85 °C °C TRUTH TABLES Table 1. Inputs/Outputs Active Low Inputs/Outputs Active High Function Select S 3 S2 S1 S0 Logic Function (M = H) Arithmetic* Function (M = L, Cn =L) Logic Function (M = H) Arithmetic* Function (M = L, Cn =H) 0 0 0 0 A A minus 1 A A 0 0 0 1 AB AB minus 1 A + B A + B 00 10 A + B AB minus 1 AB A + B 0 0 1 1 Logic 1 minus 1 Logic 0 minus 1 0 1 0 0 A + B A plus (A + B) AB A plus AB 0 1 0 1 B AB plus (A + B) B (A + B) plus AB 01 10 A B ⊕ A minus B minus 1 A ⊕ B A minus B minus 1 0 1 1 1 A + B A + B AB AB minus 1 1 0 0 0 AB A plus (A + B) A + B A plus AB 10 01 A ⊕ B A plus B A B ⊕ A plus B 1 0 1 0 B AB plus (A + B) B (A + B) plus AB 1 0 1 1 A + B A + B AB AB minus 1 1 1 0 0 Logic 0 A plus A Logic 1 A plus A 1 1 0 1 AB AB plus A A + B (A + B) plus A 1 1 1 0 AB AB plus A A + B (A + B) plus A 11 11 A A A A minus 1 * Expressed as two’s complement. For arithmetic function with Cn in the opposite state, the resulting function is as show plus 1. 1 = HIGH LEVEL. 0 = LOW LEVEL. Table 2 : Magnitude Comparison. Active-high D ata Active-low Data Input C n Output C n+ 4 Magni tude Input C n Output C n+ 4 Magni tude 11 A ≤ B0 0 A ≤ B 01 A < B 1 0 A < B 10 A > B 0 1 A > B 00 A ≥ B1 1 A ≥ B 1 = HIGH LEVEL 0 = LOW LEVEL HCC/HCF40181B 3/12 |
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