DM74184 datasheet(5/10 Pages) NSC

No. de pieza	DM74184

Descripción Electrónicos	BCD-to-Binary and Binary-to-BCD Converters

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Fabricante Electrónico	NSC [National Semiconductor (TI)]

Página de inicio	http://www.national.com

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5 / 10 page

Function Tables (Continued)

BCD-to-Binary Converter

BCD

Inputs

Outputs

Words

(See Note A)

(See Note B)

E D C B AGY5Y4Y3Y2Y1

0

1

LLLLL

L

2

3

LLLL H L

L

H

4

5

L

LHL

L

H

L

67

L

L H H L

L

H

89

L

L H L

L

H

L

10

11

L H L

L

H

L

H

12

13

L H L

L

H

L

14

15

LHLHL

L

H

16

17

L H L H H L

L

H

L

18

19

L H H L

L

H

L

H

20

21

H L

L

H

L

H

L

22

23

H L

L

L H L

L

H

L

H

24

25

HL

LHL

L

H

L

26

27

H L

L H H L

LH

HLH

28

29

H L H L

L

H

L

30

31

H H L

L

H

32

33

H H L

L H L

H

L

34

35

H H L H L

L

H

L

H

36

37

H H L H H L

HL

LHL

38

39

H H H L

L

H

L

H

Any

XXXXX H

H

BCD 9’s or BCD 10’s Complement Converter

BCD

Inputs

Outputs

Word

(See Note C)

(See Note D)

E

D

C

B

AGY8Y7Y6

0

L

LLLL

L

H

L

H

1

L

LLL

H

L

H

L

2

L

LHL

L

H

3

L

H

L

LHL

4

L

LHL

L

H

5

L

LHLH

L

H

L

6

L

LH

HL

L

H

7

L

HHH

L

8

L

H

LLL

L

H

9

L

HL

LH

L

0

H

LLLL

L

1

H

LLL

H

L

H

L

2

H

L

LHL

L

H

L

3H

L

H

L

H

4

H

LHL

L

H

5

H

LHLH

L

H

L

6

H

LH

HL

L

H

L

7

H

L

HHH

L

H

8

H

LLL

L

H

9

H

HL

LH

L

Any

X

XXXX

H

H e High Level L e Low Level X e Don’t Care

Note A

Input Conditions other than those shown produce highs at outputs Y1 through Y5

Note B

Output Y6 Y7 and Y8 are not used for BCD-to-Binary conversion

Note C

Input conditions other than those shown produce highs at outputs Y6 Y7 and Y8

Note D

Outputs Y1 through Y5 are not used for BCD 9’s or BCD 10’s complement conversion

When these devices are used as complement converters input E is used as a mode control With this input low the BCD 9’s complement is generated when it is

high the BCD 10’s complement is generated

Test Circuit

TLF6561 – 6

CL includes probe and jig capacitance

Typical Applications

TLF6561 – 7

FIGURE 1 BCD-to-Binary Converter

for Two BCD Decades

MSDMost significant decade

LSDLeast significant decade

Each rectangle represents a DM74184

5

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DM74184 Datasheet(PDF) 5 Page - National Semiconductor (TI)

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