1

PS8336C

09/24/04

n

o

i

t

c

n

u

FA

E

BB

E

B0

B

–

4

B5

1

B

-

9

1

B

t

c

e

n

n

o

c

s

i

DH

H

Z

-i

HZ

-i

H

t

c

e

n

n

o

CL

H

0

A

-

4

AZ

-i

H

t

c

e

n

n

o

CH

L

Z

-i

H5

1

A

-

9

1

A

t

c

e

n

n

o

CL

L

0

A

-

4

A5

1

A

-

9

1

A

n

o

i

t

c

n

u

FC

E

BD

E

B5

B

–

9

B0

1

B

-

4

1

B

t

c

e

n

n

o

c

s

i

DH

H

Z

-i

HZ

-i

H

t

c

e

n

n

o

CL

H

5

A

-

9

AZ

-i

H

t

c

e

n

n

o

CH

L

Z

-i

H0

1

A

-

4

1

A

t

c

e

n

n

o

CL

L

5

A

-

9

A0

1

A

-

4

1

A

1

2

3

4

5

6

7

8

9

10

11

GND

12

13

14

15

16

17

18

19

20

21

22

23

GND

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

VCC

VCC

Features

• Near-Zero propagation delay

• 5-ohm switches connect inputs to outputs

• Direct bus connection when switches are ON

• Ultra-low quiescent power 32X384 (0.1µA typical)

– Ideally suited for notebook applications

• Fast Switching Speed - 4.5ns max.

• TTL - compatible control of input levels

• Packaging (pb-free & Green available):

– 48-pin 150-mil wide plastic BQSOP (B)

Block Diagram

PinConfiguration

PinDescription

Note:

1. H = High Voltage Level L = Low Voltage Level

Hi-Z = High Impedance

Description

Pericom Semiconductor’s PI3B32X384 is a 3.3V, 20-bit bus switch

designed with a low On-Resistance allowing inputs to be connected

directly to outputs. The bus switch creates no additional

propagational delay or additional ground bounce noise. The

switches are turned ON by the Bus Enable (BE) input signal. Four

bus enable signals are provided, one for each of the upper and lower

five bits of the two 10-bit buses.

48-Pin

B

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12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

PI3B32X384

3.3V, 20-Bit, 2-Port NanoSwitch™

B

A

OE

SW

SW

SW

SW

SW

SW

SW

SW

SW

e

m

a

N

n

i

Pn

o

i

t

p

i

r

c

s

e

D

x

E

B)

W

O

L

e

v

i

t

c

A

(

s

t

u

p

n

I

e

l

b

a

n

E

s

u

B

0

A

-

9

1

AA

s

u

B

0

B

-

9

1

BB

s

u

B

D

N

Gd

n

u

o

r

G

c

c

Vr

e

w

o

P