PI74AVC+16345

2.5V, Registered 1-Bit to 4-Bit Address

Driverwith3-StateOutputs

2

PS8442A

08/06/01

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s

t

u

p

n

Is

t

u

p

t

u

O

x

E

CE

OK

L

Cx

Dx

Q

x

HL

X

X

0

B

XL

L

X

0

B

LL

↑

LL

LL

↑

HH

XH

X

X

Z

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

25

26

27

28

32

31

30

29

CE1

1Q1

2Q1

GND

3Q1

4Q1

VCC

D1

1Q2

2Q2

GND

3Q2

4Q2

D2

D3

1Q3

2Q3

GND

3Q3

4Q3

D4

VCC

1Q4

2Q4

GND

3Q4

4Q4

CLK

CE2

1Q8

2Q8

GND

3Q8

4Q8

VCC

D8

1Q7

2Q7

GND

3Q7

4Q7

D7

D6

1Q6

2Q6

GND

3Q6

4Q6

D5

VCC

1Q5

2Q5

GND

3Q5

4Q5

OE

PinDescription

Note:

1. H = High Signal Level

L = Low Signal Level

X = Irrelevant

Z = High Impedance

↑ = LOW-to-HIGHTransition

B0 = Previous State

PinConfiguration

56-Pin

A,K

e

m

a

N

n

i

Pn

o

it

p

i

r

c

s

e

D

E

O)

W

O

L

e

v

it

c

A

(

st

u

p

n

I

el

b

a

n

E

t

u

p

t

u

O

e

t

a

t

S

-

3

K

L

Ct

u

p

n

I

k

c

o

l

C

E

)

w

o

L

e

v

it

c

A

(

st

u

p

n

I

el

b

a

n

E

k

c

o

l

C

st

u

p

n

I

a

t

a

D

X

st

u

p

t

u

O

e

t

a

t

S

-

3

D

N

Gd

n

u

o

r

G

r

e

w

o

P