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74LS138 Folha de dados(PDF) 2 Page - Silicon Supplies |
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74LS138 Folha de dados(HTML) 2 Page - Silicon Supplies |
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2 / 4 page ![]() Page 2 of 4 www.siliconsupplies.com d Low Power Schottky Logic – 74LS138 Rev 1.0 21/11/17 COORDINATES (mm) PAD FUNCTION X Y 1 A 0.173 0.875 2 B 0.197 0.169 3 C 0.361 0.171 4 G2A 0.725 0.176 5 G2B 0.929 0.184 6 G1 1.141 0.220 7 Y7 1.405 0.221 8 GND 1.425 0.461 9 Y6 1.393 0.695 10 Y5 1.398 1.054 11 Y4 1.198 1.395 12 Y3 1.022 1.395 13 Y2 0.804 1.395 14 Y1 0.524 1.395 15 Y0 0.202 1.395 16 VCC 0.135 1.099 CONNECT CHIP BACK TO GND OR FLOAT Pad Layout and Functions 1660µm (65.35 mils) 0,0 13 12 11 10 9 8 4 3 2 1 DIE ID 7 6 5 14 15 16 Truth Table INPUTS OUTPUTS G1 G2A G2B C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X X H X X X H H H H H H H H X H X X X X H H H H H H H H L X X X X X H H H H H H H H H L L L L L L H H H H H H H H L L L L H H L H H H H H H H L L L H L H H L H H H H H H L L L H H H H H L H H H H H L L H L L H H H H L H H H H L L H L H H H H H H L H H H L L H H L H H H H H H L H H L L H H H H H H H H H H L H = High level (steady state) L = Low level (steady state) X = Don’t care |
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