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74AC280 数据表(PDF) 2 Page - STMicroelectronics |
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74AC280 数据表(HTML) 2 Page - STMicroelectronics |
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2 / 8 page ![]() INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE NUMBER OF INPUTS A THRU I THAT ARE HIGH OUTPUT ΣEVEN ΣODD 0, 2, 4, 6, 8 H L 1, 3, 5, 7, 9 L H PIN DESCRIPTION PI N No SYMBOL NAME AND FUNCT ION 5, 6 ΣEVEN ΣODD Parity Outputs 8, 9, 10, 11, 12, 13, 1, 2, 4 A to I Data Inputs 3 NC No Connection 7 GND Ground (0V) 14 VCC Positive Supply Voltage LOGIC DIAGRAM 74AC280 2/8 |
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