1

PS8193B

11/09/98

Logic Block Diagram

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

Note:

1. H = High Voltage Level

L = Low Voltage Level

Hi-Z = High Impedance

Pin Name

Description

1OE, 2OE

Bus Enable Inputs (Active LOW)

1A1-1A10, 2A1-2A10

Bus A

1B1 - 1B10, 2B1 - 2B10

Bus B

Product Pin Description

Product Pin Configuration

Product Features

• Near-zero propagation delay

•5

Ω or 25Ω switches connect inputs to outputs

• Fair Switching Speed - 4.5ns max.

• 32X384 function with flow through pinout make board

layout easier

• Permits Hot Insertion.

• Vcc Operating Range: 3.0V to 3.6V

• Industrial operating temperature: –40°C to +85°C

• Packages available:

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

– 48-pin 240-mil wide plastic TSSOP (A)

– 48-pin 300-mil wide plastic SSOP (V)

Product Description

Pericom Semiconductor’s PI3B series of BusSwitch circuits are

produced in the Company’s advanced 0.35 micron CMOS

technology, achieving industry leading speed.

The PI3B16210 is configured as 3.3 volt 20-bit, 2-port bus

switches designed with a low ON resistance (5

Ω) 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 (xOE) input signal.

The PI3B162210 device has a built-in 25-ohm series resistor to

reduce noise resulting from reflections, thus eliminating the need

for an external terminating resistor.

1OE

2OE

s

t

u

p

n

Is

t

u

p

t

u

O

/

s

t

u

p

n

I

E

O

1E

O

2B

1

,

A

1B

2

,

A

2

LL

B

1

=

A

1B

2

=

A

2

LH

B

1

=

A

1Z

HL

Z

B

2

=

A

2

HH

Z

Z

PI3B16210

PI3B162210 (25

Ω

Ω

Ω

Ω

Ω)

3.3V, Hot Insertion 20-Bit, 2-Port BusSwitch

48-Pin