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DM74LS156N Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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DM74LS156N Datasheet(HTML) 2 Page - Fairchild Semiconductor |
2 / 6 page www.fairchildsemi.com 2 Function Tables 3-Line-to-8-Line Decoder or 1-Line-to-8-Line Demultiplexer 2-Line-to-4-Line Decoder or 1-Line-to-4-Line Demultiplexer H = HIGH level L = LOW level X = don’t care Note 1: C = inputs C1 and C2 connected together Note 2: G = inputs G1 and G2 connected together Logic Diagram Inputs Outputs Select Strobe (0) (1) (2) (3) (4) (5) (6) (7) Or Data C (Note 1) B A G (Note 2) 2Y0 2Y1 2Y2 2Y3 1Y0 1Y1 1Y2 1Y3 X X X H HHHHHHHH L L L L L HHHHHHH L L H L H L HHHHHH L H L L HH L HHHHH L H H L HHH L HHHH H L L L HHHH L HHH H L H L HHHHH L H H H H L L HHHHHH L H H H H L HHHHHHH L Inputs Outputs Select Strobe Data 1Y0 1Y1 1Y2 1Y3 BA G1 C1 X X H X H HHH L L L H L HHH LH L H H L H H HL L H H H L H HH L H H H H L X X X L H HHH Inputs Outputs Select Strobe Data 2Y02Y1 2Y22Y3 BA G2 C2 X X H X HH HH LL L L L H H H LH L L H L H H HL L L H H L H HH L L H H H L X X X H HH HH |
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