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54HC138 Datasheet(PDF) 2 Page - Silicon Supplies |
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54HC138 Datasheet(HTML) 2 Page - Silicon Supplies |
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2 / 6 page ![]() Page 2 of 6 www.siliconsupplies.com d High Speed CMOS Logic – 54HC138 Rev 1.0 23/11/17 COORDINATES (mm) PAD FUNCTION X Y 1 A0 0.149 0.823 2 A1 0.149 0.409 3 A2 0.111 0.239 4 CS2 0.446 0.129 5 CS3 0.723 0.129 6 CS1 1.004 0.129 7 Y7 1.195 0.203 8 GND 1.217 0.566 9 Y6 1.207 0.832 10 Y5 1.197 1.204 11 Y4 1.000 1.294 12 Y3 0.827 1.294 13 Y2 0.653 1.294 14 Y1 0.479 1.294 15 Y0 0.178 1.238 16 VCC 0.147 0.980 CONNECT CHIP BACK TO VCC OR FLOAT Pad Layout and Functions 1450µm (57.09 mils) Truth Table 0,0 1 12 11 10 8 6 5 4 3 2 DIE ID 7 9 13 14 15 16 INPUTS OUTPUTS CS1 CS2 CS3 A2 A1 A0 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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