PDF《74HC154; 74HCT154》

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19 22

21 8 X/Y

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19 Fig 4. Logic diagram 001aab072 Y0 Y1 Y2 Y3 A0 E0 E1 A1 A2 A3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 74HC_HCT154_6 ? NXP B.V. 2007. All rights reserved. Product data sheet Rev.

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21 NXP Semiconductors 74HC154;

74HCT154 4-to-16 line decoder/demultiplexer 5. Pinning information 5.1 Pinning 5.2 Pin description (1) The die substrate is attached to this pad using conductive die attach material. It cannot be used as a supply pin or input. Fig 5. Pin con?guration for SO24, DIP24, SSOP24 and TSSOP24 Fig 6. Pin con?guration for DHVQFN24 74HC154D 74HCT154D 74HC154DB 74HCT154DB 74HC154N 74HCT154N 74HC154PW 74HCT154PW Y0 VCC Y1 A0 Y2 A1 Y3 A2 Y4 A3 Y5 E1 Y6 E0 Y7 Y15 Y8 Y14 Y9 Y13 Y10 Y12 GND Y11 001aab067

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24 23 001aab068 74HC154BQ 74HCT154BQ Y12 Y9 Y10 Y13 Y8 Y14 Y7 Y15 Y6 E0 Y5 E1 Y4 A3 Y3 A2 Y2 A1 Y1 A0 GND Y11 Y0 V CC

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6 VCC (1)

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24 terminal

1 index area Transparent top view Table 2. Pin description Symbol Pin Description Y0

1 data output (active LOW) Y1

2 data output (active LOW) Y2

3 data output (active LOW) Y3

4 data output (active LOW) Y4

5 data output (active LOW) Y5

6 data output (active LOW) Y6

7 data output (active LOW) Y7

8 data output (active LOW) Y8

9 data output (active LOW) Y9

10 data output (active LOW) Y10

11 data output (active LOW) GND

12 ground (0 V) Y11

13 data output (active LOW) Y12

14 data output (active LOW) 74HC_HCT154_6 ? NXP B.V. 2007. All rights reserved. Product data sheet Rev.

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2007 5 of

21 NXP Semiconductors 74HC154;

74HCT154 4-to-16 line decoder/demultiplexer 6. Functional description [1] H = HIGH voltage level L = LOW voltage level X = don'

t care. Y13

15 data output (active LOW) Y14

16 data output (active LOW) Y15

17 data output (active LOW) E0

18 enable input (active LOW) E1

19 enable input (active LOW) A3

20 address input A2

21 address input A1

22 address input A0

23 address input VCC

24 supply voltage Table 2. Pin description …continued Symbol Pin Description Table 3. Function table[1] Input Output E0 E1 A0 A1 A2 A3 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 H H X X X X H H H H H H H H H H H H H H H H H L X X X X H H H H H H H H H H H H H H H H L H X X X X H H H H H H H H H H H H H H H H L L L L L L L H H H H H H H H H H H H H H H H L L L H L H H H H H H H H H H H H H H L H L L H H L H H H H H H H H H H H H H H H L L H H H L H H H H H H H H H H H H L L H L H H H H L H H H H H H H H H H H H L H L H H H H H L H H H H H H H H H H L H H L H H H H H H L H H H H H H H H H H H H L H H H H H H H L H H H H H H H H L L L H H H H H H H H H L H H H H H H H H L L H H H H H H H H H H L H H H H H H L H L H H H H H H H H H H H L H H H H H H H L H H H H H H H H H H H H L H H H H L L H H H H H H H H H H H H H H L H H H H L H H H H H H H H H H H H H H H L H H L H H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H H H H H L 74HC_HCT154_6 ? NXP B.V. 2007. All rights reserved. Product data sheet Rev.

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2007 6 of

21 NXP Semiconductors 74HC154;