Nexperia

74HC154; 74HCT154

4-to-16 line decoder/demultiplexer

4. Functional diagram

001aab071

20

21

22

DECODER

23

7

A3

A2

A1

A0

E0

Y6

6

Y5

5

Y4

4

Y3

3

Y2

2

Y1

1

18

19

Y0

E1

8

Y7

9

Y8

10

Y9

11

Y10

13

Y11

14

Y12

15

Y13

16

Y14

17

Y15

Fig. 1. Functional diagram

001aab069

A3

Y15

20

17

Y14

16

Y1

2

Y0

1

A2

21

A1

22

A0

23

18

19

E0

E1

Fig. 2. Logic symbol

001aab070

22

21

3

0

15

DX

20

0

0

G

23

2

3

4

1

2

3

1

5

4

6

5

7

6

8

7

9

8

10

9

11

10

13

11

14

12

15

13

16

14

17

15

18

&

EN

19

22

21

8

X/Y

20

1

2

4

0

23

2

3

4

1

2

3

1

5

4

6

5

7

6

8

7

9

8

10

9

11

10

13

11

14

12

15

13

16

14

17

15

18

&

EN

19

Fig. 3. IEC logic symbol

74HC_HCT154

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 9 — 19 August 2021

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