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TC74ACT157FN 数据表(PDF) 2 Page - Toshiba Semiconductor |
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TC74ACT157FN 数据表(HTML) 2 Page - Toshiba Semiconductor |
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2 / 10 page ![]() TC74ACT157P/F/FN/FT 2007-10-01 2 Pin Assignment IEC Logic Symbol Truth Table Inputs Output ST SELECT A B Y H X X X L L L L X L L L H X H L H X L L L H X H H X: Don’t care (1) (15) (2) (5) (3) 1A 2A 1B (6) (10) 3A 2B (4) (9) 1Y 3Y (7) (12) 2Y 4Y EN SELECT ST 3B (14) (13) 4A 4B G1 (11) 1MUX 1 4A VCC 16 4B 15 14 13 12 11 10 1 2 3 4 5 6 7 1Y 2A 2B 2Y GND 4Y 8 3Y 9 3A 3B (top view) 1A 1B SELECT ST A S G B A Y B A Y B A Y B Y |
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