74ALVCH16540DGG datasheet(3/12 Pages) PHILIPS

Part #	74ALVCH16540DGG

Description	2.5V/3.3V 16-bit buffer/line driver, inverting, 5V input tolerant 3-State

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product specification

74ALVCH16540

16-bit buffer/line driver, inverting,

5V input tolerant (3-State)

1997 Aug 11

3

PIN DESCRIPTION

PIN NUMBER

SYMBOL

NAME AND FUNCTION

1, 24

nOE1

Output enable input

(active LOW)

2, 3, 5, 6, 8, 9,

11, 12

1Y0 to 1Y7

Data outputs

13, 14, 16, 17,

19, 20, 22, 23

2Y0 to 2Y7

Data outputs

4, 10, 15, 21,

28, 34, 39, 45

GND

Ground (0V)

7, 18, 31, 42

VCC

Positive supply voltage

25, 48

nOE2

Output enable input

(active LOW)

36, 35, 33, 32,

30, 29, 27, 26

2A0 to 2A7

Data inputs

47, 46, 44, 43,

41, 40, 38, 37

1A0 to 1A7

Data inputs

LOGIC SYMBOL

1A0

47

2

1Y0

1A1

46

3

1Y1

1A2

44

5

1Y2

1A3

43

6

1Y3

1A4

41

8

1Y4

1A5

40

9

1Y5

1A6

38

11

1Y6

1A7

37

12

1Y7

1OE1

1

1OE2

48

2A0

36

13

2Y0

2A1

35

14

2Y1

2A2

33

16

2Y2

2A3

32

17

2Y3

2A4

30

19

2Y4

2A5

29

20

2Y5

2A6

27

22

2Y6

2A7

26

23

2Y7

2OE1

24

2OE2

25

SW00109

FUNCTION TABLE

INPUTS

OUTPUT

nOE1

nOE2

nAn

nYn

L

H

L

H

L

X

H

X

Z

H

X

Z

H = HIGH voltage level

L = LOW voltage level

X = don’t care

Z = high impedance OFF-state

LOGIC SYMBOL (IEEE/IEC)

48

1

∇

46

44

43

41

40

38

37

36

EN2

1

2

∇

1

25

24

47

35

33

32

30

29

27

26

3

2

5

6

8

9

11

12

13

14

16

17

19

20

22

23

SW00110

1OE1

1OE2

2OE1

2OE2

1A0

1A1

1A2

1A3

1A4

1A5

1A6

2A0

2A1

2A2

2A3

2A4

2A5

2A6

2A7

1Y0

1Y1

1Y2

1Y3

1Y4

1Y5

1Y6

1Y7

2Y0

2Y1

2Y2

2Y3

2Y4

2Y7

1A7

2Y5

2Y6

&

EN1

BUS HOLD CIRCUIT

To internal circuit

VCC

Data Input

SW00044

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