1

PS8580

10/18/01

Product Description

Pericom Semiconductor’s PI3B series of logic circuits are produced

using the Company’s advanced submicron CMOS technology,

achieving industry leading performance.

The PI3B3383 is a 5-bit, 4-port bus switch with exchange 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, and the Bus Exchange (BX)

input signal offers nibble swapping of the AB and CD pairs of

signals. This exchange configuration allows byte swapping of buses

in systems. It can also be used as a quad 2-to-1 multiplexer and to

create low delay barrel shifters, etc.

Product Pin Description

Pin Name

Description

BE

Bus Enable Input (Active LOW)

BX

Bus Exchange Input

Ax

Bus A

Bx

Bus B

Cx

Bus C

Dx

Bus D

GND

Ground

Power

Logic Block Diagram

Function

BE

BX

Disconnect

H

X

Hi-Z

Hi-Z

Connect

L

L

Exchange

L

H

Note:

1. H

= High Voltage Level

X

= Don’t Care

L

= Low Voltage Level

Hi-Z = High Impedance

Product Features

• Near-zero propagation delay

•5

Ω switches connect inputs to outputs

•

Direct bus connection when switches are ON

•

Ultra-low quiescent power (0.1µA typical)

– Ideally suited for notebook applications

• Packages available:

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

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

BE

BX

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

BE

GND

Vcc

BX

24-Pin

L, Q, S

ProductPinConfiguration

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PI3B3383

3.3V, 5-Bit, 4-Port Bus

Exchange NanoSwitch

TM