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SN74AS280DE4 数据表(PDF) 5 Page - Texas Instruments |
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SN74AS280DE4 数据表(HTML) 5 Page - Texas Instruments |
5 / 14 page SN74ALS280, SN74AS280 9BIT PARITY GENERATORS/CHECKERS SDAS038C − DECEMBER 1982 − REVISED DECEMBER 1994 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 APPLICATION INFORMATION A B C D E F G H I Σ EVEN Σ ODD A B C D E F G H I Σ EVEN Σ ODD A B C D E F G H I Σ EVEN Σ ODD H - Even L = Odd H - Odd L = Even A B C D E F G H I Σ ODD A B C D E F G H I Σ ODD A B C D E F G H I Σ ODD H - Even L = Odd H - Odd L = Even To Other SN74AS280s A B C D E F G H I Σ EVEN Σ ODD 25-LINE PARITY GENERATOR/CHECKER 81-LINE PARITY GENERATOR/CHECKER Three SN74ALS280/SN74AS280 devices can be used to implement a 25-line parity generator/ checker. As an alternative, the Σ ODD outputs of two or three parity generators/checkers can be decoded with a 2-input ( ′AS86A or ′ALS86) exclusive-OR gate for 18- or 27-line parity applications. Longer word lengths can be implemented by cascading SN74ALS280/SN74AS280 devices. Parity can be generated for word lengths up to 81 bits. |
类似零件编号 - SN74AS280DE4 |
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类似说明 - SN74AS280DE4 |
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