Datasheet PI3C16861A, PI3C16861V Datasheet (PERICOM)

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PS8424C 01/09/01

Product Description

Pericom Semiconductors PI3C series of Bus Switch circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading speed.

The PI3C16861 is configured as a 2.5V or 3.3 volt, hot insertion, 20bit, 2-port bus switch designed with a low ON resistance (5 Ohm) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switch is turned ON by the Bus Enable (BE) input signal. The device is 5V I/O Tolerant.

This device is very useful in switching signals that have high bandwidth (>400 MHz) requirements.

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Truth Table

(1)

Note:

1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance

Pin Name Description

BEx Bus Enable Inputs (Active LOW) A19-A0 Bus A B19-B0 Bus B

Product Pin Description

Product Pin Configuration

PI3C16861

2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port BusSwitch

Product Features

 Near-zero propagation delay  5-Ohm switches connect inputs to outputs  High Bandwidth (>400 MHz)  Rail-to-Rail 3.3V or 2.5V switching  Permits Hot Insertion  High Bandwidth data switching  Hot Docking  2.5V Supply Voltage Operation  Packages available:

 48-pin 240-mil wide plastic TSSOP (A)  48-pin 150-mil wide plastic BQSOP (B)  48-pin 300-mil wide plastic SSOP (V)

Logic Block Diagram

48 Pin

A, B, V

noitcnuFEB

X

0A-91A

tcennocsiDHZ-iH

tcennoCL0B-91B

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PI3C16861

2.5V/3.3V, High Bandwidth,

Hot Insertion, 20-Bit, 2-Port Bus Switch

DC Electrical Characteristics (Over Operating Range, T

A

= 40°C to +85°C, VCC = 3.3V ±10%)

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Un its

V

IH

Input HIGH Voltage Guaranteed Logic HIGH Level 2.0

V

IL

Input LOW Voltage Guaranteed Logic LOW Level 0.5 0.8 V

I

IH

Input HIGH Current VCC = Max., VIN = V

CC

±1

I

IL

Input LOW Current VCC = Max., VIN = GND ±1

I

OZH

High Impedance Output Current 0 ≤A, B ≤V

CC

±1

V

IK

Clamp Diode Voltage VCC = Min., IIN = 18mA 0.73  1.2 V

R

ON

Switch On Resistance

(4)

VCC = Min., VIN = 0.0V, ION = 48mA 5 7 V

CC

= Min, VIN = 2.4V, ION = 15mA 8 15

Storage Temperature......................................................... 65°C to +150°C

Ambient Temperature with Power Applied ........................... 40°C to +85°C

Supply Voltage to Ground Potential (Inputs & Vcc Only) ........ 0.5V to +4.6V

Supply Voltage to Ground Potential (Outputs & D/O Only) ..... 0.5V to +4.6V

DC Input Voltage ................................................................... 0.5V to +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.

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at V

CC

= 3.3V, TA = 25°C ambient and maximum loading.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

4. Measured by the voltage drop between A and B pin at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A,B) pins.

5. This parameter is determined by device characterization but is not production tested.

Maximum Ratings

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

µA

Ω

sretemaraP

)5(

noitpircseDsnoitidnoCtseT.pyTstinU

C

NI

ecnaticapaCtupnI

V

NI

V0=

5.3

FpC

FFO

ffOhctiwS,ecnaticapaCB/A0.5

C

NO

nOhctiwS,ecnaticapaCB/A0.01

Capacitance (T

A

= 25°C, f = 1 MHz)

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PI3C16861

2.5V/3.3V, High Bandwidth,

Hot Insertion, 20-Bit, 2-Port Bus Switch

16861C3IP

.moC

sretemaraPnoitpircseDsnoitidnoC.niM.xaMstinU

T

HLP

T

LHP

yaleDnoitagaporP

)3,2(

xAotxB,xBotxA

C

L

R,Fp05=

L

005= Ω

52.0

sn

T

HZP

T

LZP

emiTelbanEsuB

xBroxAotEB

5.1

5.6

T

ZHP

T

ZLP

emiTelbasiDsuB

xBroxAotEB

5.5

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at VCC = 3.3V, +25°C ambient.

3. Per TTL driven input (control input only); A and B pins do not contribute to ICC.

Switching Characteristics over 3.3V Operating Range

16861C3IP

.moC

sretemaraPnoitpircseDsnoitidnoC.niM.xaMstinU

T

HLP

T

LHP

yaleDnoitagaporP

)3,2(

xAotxB,xBotxA

C

L

R,Fp05=

L

005= Ω

52.0

sn

T

HZP

T

LZP

emiTelbanEsuB

xBroxAotEB

5.1

8.9

T

ZHP

T

ZLP

emiTelbasiDsuB

xBroxAotEB

3.8

Switching Characteristics over 2.5V Operating Range

Notes:

1. See test circuit and waveforms.

2. This parameter is guaranteed but not tested on Propagation Delays.

3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.

sretemaraPnoitpircseDsnoitidnoCtseT.niM.pyT.xaMstinU

I

CC

tnerruCylppuSrewoPtnecseiuQ

V

CC

.xaM=

V

NI

VroDNG=

CC

062058

Aµ

∆I

CC

HGIHLTT@tupnIreptnerruCylppuSV

NI

V0.3=

)3(

5.2

Power Supply Characteristics

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PI3C16861

2.5V/3.3V, High Bandwidth,

Hot Insertion, 20-Bit, 2-Port Bus Switch

4.0

2.0

0.0

1.0 2.0

3.0 4.0 5.0

V

OUT

, (V)

VIN, (V)

VCC = 3.3V

3.1V

2.9V

2.7V

2.5V

2.3V

3.6V

3.8V

3.4V

3.2V

3.0V

2.8V

Output Voltage vs. Input Voltage over Various Supply Voltages

.236 .244

.488 .496

.002 .006

SEATING PLANE

.007 .010

.0197

BSC

.004 .008

.319

1

48

12.4

12.6

6.0

6.2

0.50 0.17

0.27

8.1

0.05

0.15

0.09

0.20

X.XX X.XX

DENOTES DIMENSIONS IN MILLIMETERS

.018 .030

0.45

0.75

.047

1.20 Max

BSC

Output Voltage vs. Input Voltage over Various Supply Voltages

48-Pin TSSOP (A) Package

traPegakcaPniPerutarepmeT

A16861C3IP)A(POSST-84C°58+otC°04-

B16861C3IP)B(POSQB-84C°58+otC°04-

V16861C3IP)V(POSS-84C°58+otC°04-

Ordering Information

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PS8424C 01/09/01

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PI3C16861

2.5V/3.3V, High Bandwidth,

Hot Insertion, 20-Bit, 2-Port Bus Switch

Pericom Semiconductor Corporation

2380 Bering Drive  San Jose, CA 95131  1-800-435-2336  Fax (408) 435-1100  http://www.pericom.com

48-Pin BQSOP (B) Package

.014

.0157 BSC

0.40

0.356

.008

0.20

.002 .009

5˚

0.05

0.25

.079

2.0

.010

0.25

Gauge Plane

.150 .157

X.XX X.XX

DENOTES DIMENSIONS IN MILLIMETERS

3.80

4.00

.228 .244

5.80

6.20

.020 .029

0.50

0.75

.063

1.60

.015

0.381

.386 .394

9.80

10.00

.0051 .009

0.13

0.23

1

48

x 45˚

BSC

Nom

Max

Nom

REF

48-Pin SSOP (V) Package

0.20

0.51

1.01

0.25

0.381

0.635

.008

.008 .016

0-8˚

0.20

0.40

.110 2.79

.010

Gauge Plane

.02 .04

.015 .025

x 45˚

.025 BSC

0.635

.291 .299

X.XX X.XX

DENOTES DIMENSIONS IN MILLIMETERS

7.39

7.59

.395 .420

10.03

10.67

.620 .630

15.75

16.00

.008 .0135

0.20

0.34

1

48

Nom.

Max