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PS8417E

09/07/04

Description

Pericom Semiconductor’s PI3C3305 and PI3C3306 are 2.5V or

3.3 Volt, 2-bit bus switches designed with fast individual enables.

When enabled via the associated Bus Enable (BE) pin, the “A” pin

is directly connected to the “B” pin for that particular gate. The

bus switch introduces no additional propagation delay or additional

ground bounce noise.

The PI3C3306 device has active LOW enables, and the PI3C3305

has active HIGH enables. It is very useful in switching signals that

have high bandwidth (>400 MHz).

Features

• Near-Zero propagation delay

• 5Ω switches connect inputs to outputs

• High Bandwidth (>400 MHz)

• Rail-to-Rail, 3.3V or 2.5V Switching

• 5V I/O Tolerant

• 2.5V Supply Voltage Operation

• Permits Hot Insertion

• Packaging (Pb-free & Green Available):

– 8-pin 173-mil wide plastic TSSOP

– 8-pin 118-mil wide plastic MSOP

Applications

• High Bandwidth Data Switching

• Hot Docking

PI3C3305 Block Diagram

PI3C3306 Block Diagram

PI3C3305

PI3C3306

2.5V/3.3V, High Bandwidth, Hot Insertion,

2-Bit, 2-Port Bus Switch w/ Individual Enables

PI3C3305 Pin Configuration

PI3C3306 Pin Configuration

BE1

A1

B1

GND

BE2

B2

A2

BE1

A1

B1

GND

VCC

BE2

B2

A2

Pin Description

Pin Name

Description

BEn

Switch Enable (PI3C3305)

BEn

Switch Enable (PI3C3306)

A2-A1

Bus A

B2-B1

Bus B

Power

GND

Ground

PI3C3306

BEn

PI3C3305

BEn

An

Bn

Function

X

Hi-Z Hi-Z GND Disconnect

H

L

L

H

Bn

An

Connect

Notes:

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

Hi-Z = High Impedance; X = Don’t Care

2. A pull-up resistor should be provided for power-up protection.

BE1

A1

B1

BE2

A2

B2

BE1

A1

B1

BE2

A2

B2