PERIC PI3B16215A, PI3B16215B Datasheet

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PI3B16215

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3.3V, Hot Insertion, 20-Bit FET BusSwitch w/Precharged Outputs

Product Features

Near Zero Propagation Delay

5Ω Switches Connect Between Two Ports

Fast Switching Speed: 4.5ns max.

Permits Hot Insertion

Isolation during Power-Off conditions

B-Port Outputs are precharged by Bias Voltage to minimize signal distortion during live insertion

Package options include:

48-pin 150-mil wide plastic BQSOP (B)

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

48-pin300-milwideplasticSSOP(V)

Logic Block Diagram

 

 

 

 

 

 

1

 

BIASV

 

2

 

 

 

 

 

 

 

 

 

 

1A1

 

 

 

 

46

 

 

 

 

1B1

SW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1A10

12

SW

36

1B10

1OE

48

 

 

 

 

 

 

 

2A1

13

SW

35

2B1

 

 

2A10

24

SW

25

2B10

 

 

2OE

47

 

 

 

 

 

 

 

A B

Product Description

Pericom Semiconductor’s PI3B series of logic circuits are produced using the company’s advanced 0.35 micron CMOS Technology.

The PI3B16215 provides 20-bits of high-speed bus switching. Low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device also precharges the B-port to a user-selectable bias voltage (BIASV) to minimize liveinsertion noise.

The device is organized as dual 10-bit bus switches with individual output-enable (OE) inputs. When OE is LOW, the corresponding 10-bit bus switch is on and port A is connected to port B. When OE is HIGH, the switch is open, a high-impedance state exists between the two ports, and port B is precharged to BIASV through the equivalent of a 10-kΩ resistor.

To ensure the high-impedance state on power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver connected to OE.

ProductPinConfiguration

BIASV

 

1

 

48

 

 

 

 

 

 

 

1OE

1A1

 

 

 

 

 

 

 

 

2

 

47

 

2OE

 

 

 

1A2

 

3

 

46

 

1B1

 

 

 

1A3

 

 

45

 

1B2

 

4

 

 

1A4

 

5

 

44

 

1B3

 

 

 

1A5

 

6

 

43

 

1B4

 

 

 

1A6

 

 

42

 

1B5

 

7

 

 

GND

 

 

41

 

GND

 

8

 

 

1A7

 

48-Pin

40

 

1B6

 

9

 

1A8

 

39

 

1B7

 

10

 

1A9

 

A,B,V

38

 

1B8

 

11

 

1A10

 

 

37

 

1B9

 

12

 

 

2A1

 

13

 

36

 

1B10

 

 

 

2A2

 

 

35

 

2B1

 

14

 

 

Vcc

 

 

34

 

2B2

 

15

 

 

 

 

 

 

 

 

 

 

2A3

 

16

 

33

 

2B3

GND

 

 

32

 

GND

 

17

 

 

2A4

 

 

31

 

2B4

 

18

 

 

2A5

 

19

 

30

 

2B5

 

 

 

2A6

 

 

29

 

2B6

 

20

 

 

2A7

 

 

28

 

2B7

 

21

 

 

2A8

 

 

27

 

2B8

 

22

 

 

2A9

 

 

26

 

2B9

 

23

 

 

2A10

 

 

25

 

2B10

 

24

 

 

OE

1

PS8190D

05/04/00

PI3B16215 3.3V, Hot Insertion, 20-BitFETBusSwitchw/PrechargedOutputs

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Maximum Ratings

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

......................................Storage Temperature Range, TSTG

–65ºC to +150ºC

Supply Voltage Range, VCC .........................................

–0.5V to +4.6V

Bias Voltage Range, BIASV ........................................

–0.5V to +4.6V

Input Voltage Range ........................................................

–0.5V to +4.6V

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.

Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.0V to 3.6V)

Parameter

Description

 

Test Conditions

Min.

Typ.

Max.

Units

 

 

 

 

 

 

 

 

 

BIASV

Bias Voltage

 

 

 

0

 

VCC

 

 

 

 

 

 

 

 

 

VIH

High-Level Control Input Voltage

VCC = 2.7V to 3.6V

2

 

 

V

 

 

 

 

 

 

 

 

VIL

Low-Level Control Input Voltage

VCC = 2.7V to 3.6V

–0.5

 

0.8

 

 

 

 

 

 

 

 

 

 

 

VIK

Clamp Diode Voltage

VCC = 3.0V

 

II = –18mA

 

–0.7

–1.2

 

 

 

 

 

 

 

 

 

 

II

Input Current

VCC = 3.6V

 

VI = VCC or GND

 

 

±5

µA

 

 

 

 

 

 

 

 

IOZH

High Impedance Output Current

VCC = 0

 

VI = VO = 0 to 3.6V

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

IO

Output Current

VCC = 3.0V

 

BIASV = 2.4V, VO = 0

0.15

 

 

mA

 

 

 

 

 

 

 

 

 

ICC

Quiescent Power Supply Current

VCC = 3.6V

 

IO = 0, VI = VCC or GND

 

 

10

 

 

 

 

 

 

 

 

 

 

ICC(1)

 

 

 

One Input at 3V,

 

 

 

µA

Supply Current

VCC = 3.6V

 

Other Inputs at VCC or

 

 

750

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

CIN

Input Capacitance

VI = 3.0V or 0

 

 

3.0

 

 

 

 

 

 

 

 

 

 

pF

COFF

A/B Capacitance Switch Off

VO = 3.0V or

 

Switch Off

 

8.5

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VI = 0

 

II = 64mA

 

5

8

 

RON(2)

 

 

 

 

 

 

Ω

Switch On Resistance

 

II = 24mA

 

5

8

 

 

 

 

 

VI = 2.4V

 

II = 15mA

 

10

15

 

 

 

 

 

 

 

 

 

 

Notes:

1.This is the increase in supply current for each input (OE only) that is at the specified voltage level rather than VCC or GND.

2.Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On state resistance is determined by the lower of the voltages of the two (A or B) terminals.

TruthTable

 

 

 

Function

 

OE

 

 

 

 

 

 

L

A port = B port

 

 

 

 

 

H

A port = Z, B Port = BIASV

 

 

 

 

2

PS8190D

05/04/00

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