74HC138(238,LS等)で74HC154の様に使おう。

自分用メモ。

G1-1

G1-2

G2A

G2B

C

B

A

Y0-1

Y1-1

Y2-1

Y3-1

Y4-1

Y5-1

Y6-1

Y7-1

Y0-2

Y1-2

Y2-2

Y3-2

Y4-2

Y5-2

Y6-2

Y7-2

L

―

×

×

×

×

×

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

―

L

×

×

×

×

×

H

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H

H

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H

H

H

H

H

H

H

H

H

H

×

×

H

×

×

×

×

H

H

H

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H

H

H

H

H

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H

H

H

H

H

H

×

×

×

H

×

×

×

H

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L

74HC138(238,LS等)を74HC154の様に使う為の真理値表

ハイフンの後の１，２は１個目、２個目みたいな感じ

むしろハイフン無しは共通入力＝同じ配線（前段までのファンアウト数の確保とかは知らん勝手にやってくれ）