1

PS8425D

04/05/02

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ProductFeatures

• PI74AVC164245 is designed for low voltage operation:

1.8V-2.5Vto3.3V

• Industrial operation at –40°C to +85°C

• Packages available:

– 48-pin plastic 300 mil SSOP (V)

– 48-pin plastic 240 mil TSSOP (A)

– 48-pin plastic 173 mil TVSOP (K)

PI74AVC164245

ProductDescription

Pericom Semiconductor’s AVC series of logic circuits are produced

using the Company’s advanced 0.35 micron CMOS technology,

achieving industry leading performance.

Pericom Semiconductor’s PI74AVC164245, a 16-bit (dual-octal)

noninverting bus transceiver, contains two separate supply rails:

at 1.8-2.5V. This arrangement permits translation from a 1.8-2.5V to

3.3V environment and vice versa.

The PI74AVC164245 is designed for asynchronous communication

between data buses.

To ensure the high impedance state during power up or power

a pullup resistor: the minimum value of the resistor is determined by

the current-sinking capability of the driver.

Logic Block Diagram

ProductPinConfiguration

1DIR

1OE

1B1

1

47

1A1

To Seven Other Channels

2DIR

2OE

2B1

24

25

13

2

48

36

2A1

To Seven Other Channels

s

t

u

p

n

I

n

o

i

t

a

r

e

p

O

R

I

D

E

O

L

L

H

L

X

H

s

u

b

A

o

t

a

t

a

d

B

s

u

b

B

o

t

a

t

a

d

A

n

o

it

a

l

o

s

I

16-Bit 1.8-2.5V to 3.3V Level Shifting

Transceiver with 3-State Outputs

1

2

3

4

5

6

7

8

9

48

10

47

11

46

12

45

13

44

14

43

15

42

16

41

17

40

18

39

19

38

20

37

21

36

22

35

23

34

24

33

32

31

30

29

28

27

26

25

(LVTTL)1DIR

1OE(LVTTL)

1B1

1B2

GND

1B3

1B4

(3.3V)VCCB

1B5

1B6

GND

1B7

1B8

2B1

2B2

2B3

2B4

(3.3V)VCCB

2B5

2B6

GND

2B7

2B8

(LVTTL)2DIR

GND

1A1

1A2

GND

1A3

1A4

VCCA(1.8V-2.5V)

1A5

1A6

GND

1A7

1A8

2A1

2A2

2A3

2A4

VCCA(1.8V-2.5V)

2A5

2A6

GND

2A7

2A8

2OE(LVTTL)

GND

48-Pin

A, K, V