MC14514B(2000) Просмотр технического описания (PDF) - ON Semiconductor

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MC14514B
(Rev.:2000)

4-Bit Transparent Latch/4-to-16 Line Decoder

ON Semiconductor 

MC14514B, MC14515B

PIN ASSIGNMENT

ST 1

D1 2

D2 3

S7 4

S6 5

S5 6

S4 7

S3 8

S1 9

S2 10

S0 11

VSS 12

24 VDD

23 INH

22 D4

21 D3

20 S10

19 S11

18 S8

17 S9

16 S14

15 S15

14 S12

13 S13

DECODE TRUTH TABLE (Strobe = 1)*

Data Inputs

Inhibit D C B

0

000

0

000

0

001

0

001

0

010

0

010

0

011

0

011

0

100

0

100

0

101

0

101

0

110

0

110

0

111

0

111

1

XXX

Selected Output

MC14514 = Logic “1”

A MC14515 = Logic “0”

0

S0

1

S1

0

S2

1

S3

0

S4

1

S5

0

S6

1

S7

0

S8

1

S9

0

S10

1

S11

0

S12

1

S13

0

S14

1

S15

X All Outputs = 0, MC14514

All Outputs = 1, MC14515

X = Don’t Care

*Strobe = 0, Data is latched

BLOCK DIAGRAM

DATA 1

DATA 2

DATA 3

DATA 4

VDD = PIN 24

VSS = PIN 12

2

A

3

B

TRANSPARENT

21

LATCH

C

22

D

STROBE

1

23

INHIBIT

4 TO 16

DECODER

S0 11

S1 9

S2 10

S3 8

S4 7

S5 6

S6 5

S7 4

S8 18

S9 17

S10 20

S11 19

S12 14

S13 13

S14 16

S15 15

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

ABCD

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