PERIC PI3C3125L, PI3C3125Q, PI3C3125W, PI3C3126L, PI3C3126Q, PI3C3126W Datasheet

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PERIC PI3C3125L, PI3C3125Q, PI3C3125W, PI3C3126L, PI3C3126Q, PI3C3126W Datasheet

PI3C3125

PI3C3126

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2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables

Product Features

Near zero propagation delay

5Ω switches connect inputs to outputs

HighBandwidth(>400MHz)

Rail-to-Rail,or2.5Vor 3.3VSwitching

5VI/OTolerant

2.5V Supply Voltage Operation

Permits Hot Insertion

Packages available:

14-pin 150 mil wide plastic SOIC (W)

14-pin 170 mil wide plastic TSSOP(L)

16-pin 150 mil wide plastic QSOP (Q)

Product Description

Pericom Semiconductor’s PI3C series of logic circuits are produced using the Company’s advanced sub micron CMOS technology, achieving industry leading speed grades.

The PI3C3125A and PI3C3126A are 2.5V or 3.3 Volt, 4-bit bus switches designed with four individual 5Ω bus switches with fast indiviual enables in an industry standard 74XX125/126 pinout. 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 PI3C3125 device has active LOW enables, and the PI3C3126A has active HIGH enables. It is very useful in switching signals that have high bandwidth (>400 MHz).

Applications

• High Bandwidth Data Switching

• Hot Docking

PI3C3125 Logic Block Diagram

 

PI3C3126 Logic Block Diagram

 

A0

B0

A0

B0

BE0

 

BE0

 

A1

B1

A1

B1

BE1

 

BE1

 

A2

B2

A2

B2

BE2

 

BE2

 

A3

B3

A3

B3

BE3

 

BE3

 

1

PS8153B

12/10/99

PI3C3125/PI3C3126 2.5V/3.3V,HighBandwidth, Hot Insertion, 4-Bit, 2-Port Bus Switch

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Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

............................................................Storage Temperature

–65°C to +150°C

Ambient Temperature with Power Applied .............................

–40°Cto+85°C

Supply Voltage to Ground Potential (Inputs & VCC Only) ......

–0.5Vto+4.6V

Supply Voltage to Ground Potential (Outputs & D/O Only) ....

–0.5Vto+4.6V

DC Input Voltage .....................................................................

–0.5Vto+5.5V

DC Output Current ...............................................................................

120mA

Power Dissipation ...................................................................................

0.5W

 

 

Note:

Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

PI3C3125 14-Pin Configuration PI3C3126 14-Pin Configuration

 

 

 

 

 

 

 

 

 

 

 

 

BE0

 

 

1

14

 

 

Vcc

 

 

 

 

A0

 

 

2

13

 

 

 

BE3

 

 

 

 

 

B0

 

 

3

14--PinIN 12

 

 

A3

 

 

 

 

 

 

 

 

4

 

 

B3

BE1

 

W14L,W 11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

BE2

 

A1

 

 

10

 

 

 

 

 

 

B1

 

6

9

 

 

A2

 

 

 

GND

 

 

7

8

 

 

B2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BE0

 

 

1

 

14

 

 

Vcc

 

 

 

 

 

A0

 

2

 

13

 

 

BE3

 

 

 

 

 

B0

 

3

-PIN 12

 

 

A3

 

 

 

 

BE1

 

 

4

14-Pin

11

 

 

B3

 

 

W14L,W

 

 

A1

 

5

 

10

 

 

BE2

 

 

 

 

 

B1

 

6

 

9

 

 

A2

 

 

 

 

 

GND

 

7

 

8

 

 

B2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PI3C3125 16-Pin Configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

 

 

1

 

16

 

 

Vcc

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

BE0

 

 

 

 

15

 

 

BE3

 

 

 

 

 

A0

 

 

3

16-PIN 14

 

 

A3

 

 

 

 

B0

 

 

4

16-Pin

13

 

 

B3

 

 

 

Q16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BE1

 

 

 

5

Q

12

 

 

BE2

 

 

 

 

A1

 

6

 

11

 

 

A2

 

 

 

 

 

B1

 

7

 

10

 

 

B2

 

 

 

 

GND

 

8

 

9

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PI3C3126 16-Pin Configuration

 

 

 

 

 

 

 

 

 

NC

 

 

1

 

16

 

 

Vcc

 

 

 

 

BE0

 

 

2

 

15

 

 

BE3

 

 

 

 

A0

 

 

3

16-PIN

14

 

 

A3

 

 

 

B0

 

 

4

16-Pin

13

 

 

B3

 

 

 

 

Q16

 

 

 

 

BE1

 

5

Q

12

 

 

BE2

 

 

 

A1

 

6

 

11

 

 

A2

 

 

 

 

B1

 

7

 

10

 

 

B2

 

 

 

 

GND

 

8

 

9

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin Description

 

Pin Name

Description

 

 

 

 

 

 

 

Switch Enable (PI3C3125)

 

BEn

 

BEn

Switch Enable (PI3C3126)

 

 

 

 

 

A3-A0

Bus A

 

 

 

 

 

B3-B0

Bus B

 

 

 

 

 

VCC

Power

 

GND

Ground

Truth Table(1)

PI3C3125

PI3C3126

 

 

 

 

BEn

BEn

An

Bn

VCC

Function

X*

X

Hi-Z

Hi-Z

GND

Disconnect

H

L

Hi-Z

Hi-Z

VCC

Disconnect

L

H

Bn

An

VCC

Connect

Note:

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.

2

PS8153B

12/10/99

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