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74F181SC Scheda tecnica(PDF) 4 Page - Fairchild Semiconductor |
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74F181SC Scheda tecnica(HTML) 4 Page - Fairchild Semiconductor |
4 / 9 page www.fairchildsemi.com 4 Logic Arithmetic Arithmetic S0 S1 S2 S3 (M =H) (M=L, C 0=Inactive) (M =L, C 0=Active) c. A All Input Data Inverted; B Input Data True LLLL A A minus 1 A H LLL A + B A • B minus 1 A • B LH L L A • B A • B minus 1 A • B H H L L Logic “1” minus 1 (2s comp.) Zero LL H L A • B A plus (A + B) A plus (A + B) plus 1 HL HL B A • B plus (A + B) A • B plus (A + B) plus 1 LH H L A ⊕ B A plus B A plus B plus 1 HHH L A + BA + BA + B plus 1 LLL H A + B A plus (A + B) A plus (A + B) plus 1 HL L H A ⊕B A minus B minus 1 A minus B LH LH B A • B plus (A + B)A • B plus (A + B) plus 1 HH L H A + B A + B A + B plus 1 L L H H Logic “0” A plus A (2 × A) A plus A (2 × A) plus 1 H L H H A • B A plus A • B A plus A • B plus 1 L HHH A • B A plus A • B A plus A • B plus 1 HHHH A A A plus 1 d. A Input Data True; B Input Date Inverted LLLL A A A plus 1 H LLL A • B A + B A + B plus 1 LH L L A + B A + BA + B plus 1 H H L L Logic “0” minus 1 (2s comp.) Zero LL H L A + B A plus A • B A plus A • B plus 1 HL HL B A • B plus (A + B)A • B plus (A + B) plus 1 LH H L A ⊕ B A plus B A plus B plus 1 H H H L A • B A • B minus 1 A • B LLL H A • B A plus A • B A plus A • B plus 1 HL L H A ⊕B A minus B minus 1 A minus B LH LH B A • B plus (A + B) A • B plus (A + B) plus 1 HH L H A • B A • B minus 1 A • B L L H H Logic “1” A plus A (2 × A) A plus A (2 × A) plus 1 HL H H A + BA plus (A + B) A plus (A +B) plus 1 L HHH A + B A plus (A + B) A plus (A +B) plus 1 HHHH A A minus 1 A |
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Descrizione simile - 74F181SC |
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