1

PS8533

03/22/01

BE1

A1

B1

GND

BE2

B2

A2

ProductDescription

PericomSemiconductor’sPI3VTseriesof logiccircuitsareproduced

using the Company’s advanced submicron CMOS technology,

achieving industry leading performance.

ThePI3VT3306is a 2.5Vor 3.3V 2-bit,2-portbusswitchdesigned

with a low ON resistance (5 ohms). The switches are turned ON or

enabled by the Bus Enable (BEn) input signal.

Given a 3.3V supply and an input voltage of 3.3V, the switch

translates to an output voltage of 2.5V. Similarly, when operated

with a 2.5V supply and given 2.5V inputs, the device translates the

outputs to 1.8V.

Notes:

1. H = High Voltage Level

L = Low Voltage Level

Hi-Z = High Impedance

X = Don't Care

* A pull-up resistor should be provided for power-up protection

Logic Block Diagram

ProductPinDescription

ProductPinConfiguration

ProductFeatures

• Near zero propagation delay

• Low ON resistance switches connect inputs to outputs

• 2.5VSupplyVoltageOperation

• 2.5Vor1.8Vswitching

• Packagesavailable:

–8-pin,173milwideplasticTSSOP(L)

–8-pin,118milwideplasticMSOP(U)

Applications

• 3.3V to 2.5V level shifting (voltage translation)

• 2.5V to 1.8V level shifting (voltage translation)

PI3VT3306

2-Bit, 2-Port, Low Voltage

Translator Bus Switch

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A1

B1

BE1

A2

B2

BE2

8-Pin

L,U

n

E

Bn

An

C

n

o

it

c

n

u

F

*

XZ

-i

HZ

-i

HD

N

Gt

c

e

n

n

o

c

si

D

HZ

-i

HZ

-i

C

t

c

e

n

n

o

c

si

D

Ln

Bn

C

t

c

e

n

n

o

C

e

m

a

N

n

i

Pn

o

it

p

i

r

c

s

e

D

n

E

Bel

b

a

n

E

h

c

ti

w

S

1

A

-

2

AA

s

u

B

1

B

-

2

BB

s

u

B

C

r

e

w

o

P

D

N

Gd

n

u

o

r

G