1

PS8161F

09/23/04

Description

PericomSemiconductor’sPI3B3384andPI3B32384are3.3Volt,10-

bit, 2-port bus switches 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. Switches are turned ON by the Bus Enable (BE) input signal.

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

lower five bits of the two 10-bit buses. The PI3B32384 is designed

with an internal 25-ohm resistor reducing noise reflection in high-

speed applications.

BEA

B0

A0

A1

B1

B2

A2

A3

B3

B4

A4

GND

Vcc

B9

A9

A8

B8

B7

A7

A6

B6

B5

A5

BEB

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

PinConfiguration

PinDescription

PinName

Description

BEA,BEB

Bus Enable Inputs (Active LOW)

A0-A9

Bus A

B0-A9

Bus B

GND

Ground

Power

Features

• Near-Zero propagation delay

• Lownoise,25-ohmversion(PI3B32384)

• 5-ohm switches connect inputs to outputs (PI3B3384)

• Fast Switching Speed - 4.5ns max.

• Ultra-low quiescent power (0.1µA typical)

– Ideally suited for notebook applications

• Packaging (Pb-free & Green available):

– 24-pin 150-mil wide plastic QSOP (Q)

– 24-pin 173-mil wide plastic TSSOP (L)

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Function

Disconnect

H

H

Hi-Z

Hi-Z

Connect

L

H

Hi-Z

Connect

H

L

Hi-Z

Connect

L

L

Block Diagram

PI3B3384

PI3B32384 (25

Ω

Ω

Ω

Ω

Ω)

3.3V, 10-Bit, 2-Port, NanoSwitch™

Notes:

1. H = High Voltage Level

X = Don’t Care

L = Low Voltage Level

Hi-Z =High Impedance

24-Pin

Q, L

AB

BE