IDTQS3VH800PAG8 [IDT]

Bus Driver, CB3Q/3VH/3C/2B Series, 1-Func, 10-Bit, True Output, PDSO24, GREEN, TSSOP-24;


型号：	IDTQS3VH800PAG8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Bus Driver, CB3Q/3VH/3C/2B Series, 1-Func, 10-Bit, True Output, PDSO24, GREEN, TSSOP-24 光电二极管
文件：	总8页 (文件大小：85K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

QUICKSWITCH^®PRODUCTS

2.5V / 3.3V 10-BIT HIGH

IDTQS3VH800

BANDWIDTH BUS SWITCH

WITH PRECHARGED OUTPUTS

DESCRIPTION:

FEATURES:

• N channel FET switches with no parasitic diode to VCC

– Isolationunderpower-offconditions

– No DC path to VCC or GND

The QS3VH800 HotSwitch is a high bandwidth, 10-bit bus switch. The

QS3VH800hasverylowONresistance,resultinginunder250pspropagation

delay through the switch. The QS3VH800 precharges the B port to a user

selectablebiasvoltage(VBIAS)tominimizeliveinsertionnoise. Theswitches

canbeturnedONunderthecontroloftheLVTTL-compatibleOutputEnable

(OE)signalforbidirectionaldataflowwithnoaddeddelayorgroundbounce.

IntheONstate,theswitchescanpasssignalsupto5V. IntheOFFstate,the

switchesofferveryhighimpedenceattheterminals.

– 5V tolerant in OFF and ON state

• 5V tolerant I/Os

• B port precharged to user-selectable VBIAS

• Low RON - 4Ω typical

• Flat R^ONcharacteristics over operating range

• Rail-to-rail switching 0 - 5V

Thecombinationofnear-zeropropagationdelay,highOFFimpedance,and

over-voltage tolerance makes the QS3VH800 ideal for high performance

communicationapplications.

• Bidirectional dataflow with near-zero delay: no added ground

bounce

• Excellent R^ONmatching between channels

• VCC operation: 2.3V to 3.6V

TheQS3VH800is characterizedforoperationfrom-40°Cto+85°C.

• High bandwidth - up to 500MHz

• LVTTL-compatible control Inputs

• Undershoot Clamp Diodes on all switch and control Inputs

• Low I/O capacitance, 4pF typical

• Available in QSOP and TSSOP packages

APPLICATIONS:

• Hot-swapping

• 10/100 Base-T, Ethernet LAN switch

• Low distortion analog switch

• Replaces mechanical relay

• ATM 25/155 switching

FUNCTIONALBLOCKDIAGRAM

VBIAS

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

INDUSTRIAL TEMPERATURE RANGE

JUNE 2006

2006 Integrated Device Technology, Inc.

DSC-5880/15

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

ABSOLUTEMAXIMUMRATINGS⁽¹⁾

PINCONFIGURATION

Symbol

Description

SupplyVoltage to Ground

Max

–0.5 to +4.6

–0.5 to +5.5

–3

Unit

(2)

VTERM

(3)

VTERM

DC Switch Voltage VS

(3)

VTERM

DC Input Voltage VIN

V^CC

VAC

IOUT

AC Input Voltage (pulse width ≤20ns)

DC Output Current (max. sink current/pin)

Storage Temperature

120

° C

TSTG

–65 to +150

NOTES:

1. Stresses greater than those listed under ABSOLUTE 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.

2. V^CCterminals.

3. All terminals except V^CC.

CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V)

Parameter⁽¹⁾

Typ.

Max. Unit

Symbol

CIN

Control Inputs

GND

VBIAS

CI/O

Quickswitch Channels (Switch OFF)

VBIAS = OPEN

CI/O

Quickswitch Channels (Switch ON)

QSOP/ TSSOP

TOP VIEW

NOTE:

1. This parameter is guaranteed but not production tested.

PINDESCRIPTION

Pin Names

I/O

Description

Bus Switch Enable

Bias Voltage

Bus A

VBIAS

A0 - A9

B0 - B9

I/O

Bus B

FUNCTIONTABLE⁽¹⁾

B0 - B9

A0 - A9

VBIAS

Function

Connect

Disconnect A0 - A9 = Z

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

Z = High-Impedence

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE

FollowingConditionsApplyUnlessOtherwiseSpecified:

Industrial: TA = –40°C to +85°C, VCC = 3.3V ±0.3V

Symbol

Parameter

Input HIGH Voltage

Test Conditions

Min.

1.7

Typ.⁽¹⁾

—

Max.

—

0.7

0.8

Unit

VIH

GuaranteedLogicHIGH

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

forControlInputs

VIL

InputLOWVoltage

BiasVoltage

GuaranteedLogicLOW

forControlInputs

—

VBIAS

VCC = 3V to 3.6V, IO = 0

VCC = 2.3V to 2.7V, IO = 0

3.3

—

±1

IIN

BiasCurrent⁽²⁾

VCC = 3V, VBIAS = 2.4V, VO = 0, OE = HIGH

0V ≤ VIN ≤ VCC

0.25

—

µA

µ A

InputLeakageCurrent(ControlInputs)

Off-StateCurrent(Hi-Z)

IOZ

IOFF

0V ≤ VOUT ≤ 5V, Switches OFF

VIN or VOUT 0V to 5V, VCC = 0V

DataInput/OutputPowerOffLeakage

VCC = 2.3V

VIN = 0V

VIN = 1.7V

VIN = 0V

VIN = 2.4V

ION = 30mA

ION = 15mA

ION = 30mA

ION = 15mA

RON

Switch ON Resistance

Typical at VCC = 2.5V

VCC = 3V

NOTES:

1. Typical values are at VCC = 3.3V and TA = 25°C.

2. Bias resistance is 5kΩ typical at VCC = 3.3V; VBIAS = 2.4V, 25°C.

TYPICAL ON RESISTANCE vs V AT V = 3.3V

RON

(ohms)

0.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

1.0

0.5

VIN

(Volts)

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

POWERSUPPLYCHARACTERISTICS

Symbol

ICCQ

Parameter

TestConditions⁽¹⁾

Min.

—

Typ.

Max.

Unit

µ A

QuiescentPowerSupplyCurrent

Power Supply Current ^(2,3)per Input HIGH

Dynamic Power Supply Current ⁽⁴⁾

VCC = Max., VIN = GND or VCC, f = 0

VCC = Max., VIN = 3V, f = 0 per Control Input

VCC = 3.3V, A and B Pins Open, Control Inputs

Toggling @ 50% Duty Cycle

ΔICC

—

ICCD

See Typical ICCD vs Enable Frequency graph below

NOTES:

1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.

2. Per input driven at the specified level. A and B pins do not contribute to ΔIcc.

3. This parameter is guaranteed but not tested.

4. This parameter represents the current required to switch internal capacitance at the specified frequency. The A and B inputs do not contribute to the Dynamic Power Supply

Current. This parameter is guaranteed but not production tested.

CCD

TYPICAL I

vs ENABLE FREQUENCY CURVE AT V = 3.3V

ENABLE FREQUENCY (MHz)

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE

TA = -40°C to +85°C

VCC = 2.5 ± 0.2V⁽¹⁾

VCC = 3.3 ± 0.3V⁽¹⁾

(4)

Symbol

tPLH

Parameter

Test Conditions

Min.

Max.

Min.

Max.

0.2

Unit

(2,3)

DataPropagationDelay

Ax to Bx or Bx to Ax

⎯

0.2

⎯

tPHL

tPZL

tPZH

tPLZ

tPHZ

fOE

SwitchTurn-OnDelay

OE to Ax to Bx

VBIAS = 3V

1.5

⎯

1.5

⎯

7.5

VBIAS = GND

VBIAS = 3V

SwitchTurn-OffDelay

OE to Ax to Bx

OperatingFrequency-Enable^(2,5)

VBIAS = GND

VBIAS = OPEN

MHz

NOTES:

1. See Test Conditions under TEST CIRCUITS AND WAVEFORMS.

2. This parameter is guaranteed but not production tested.

3. The bus switch contributes no propagation 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 0.2ns at C^L= 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the

system. Propagation 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.

4. Minimums are guaranteed but not production tested.

5. Maximum toggle frequency for OE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

SOMEAPPLICATIONSFORHOTSWITCHPRODUCTS

NFET

0 to +5V

+6.5V

Vcc = 3.3V

CHARGE PUMP

DRIVER

SINGLE HOT

SWITCH

Rail-to-Rail Switching

PHY

3VH

SWITCH

4.5VPP

10Mbps to 100Mbps

>100m

LOGIC

SIDE

LOGIC

SIDE

Z = 100 Ω

4.5VPP

TWISTED PAIR

2VPP

Fast Ethernet Data Switching (LAN Switch)

ZERO DOWN TIME SYSTEM

PLUGGABLE CARD/ LIVE SYSTEM

ON CARD

CARD I/O

CPU

LOGIC

ON CARD

LOGIC

CARD I/O

RAM

BUS

Hot-Swapping

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

TESTCIRCUITSANDWAVEFORMS

TESTCONDITIONS

VIH

SAME PHASE

INPUT TRANSITION

(1)

(2)

Symbol

VLOAD

VIH

VCC = 3.3V ± 0.3V

VCC = 2.5V ± 0.2V

Unit

tPHL

tPLH

2 x Vcc

Vcc

VOH

VOL

OUTPUT

1.5

300

VCC/2

150

VIH

OPPOSITE PHASE

INPUT TRANSITION

VLZ

VHZ

150

Propagation Delay

VLOAD

Open

GND

VCC

DISABLE

ENABLE

VIH

CONTROL

INPUT

500Ω

tPZL

tPLZ

VIN

VOUT

(1, 2)

Pulse

VLOAD/2

D.U.T.

VLOAD/2

V^{OL +}VLZ

VOL

OUTPUT

NORMALLY

LOW

Generator

SWITCH

CLOSED

500Ω

tPHZ

tPZH

VOH

VOH -VHZ

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

Test Circuits for All Outputs

NOTE:

1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.

Enable and Disable Times

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.

NOTES:

1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.

2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.

SWITCHPOSITION

Test

tPLZ/tPZL

tPHZ/tPZH

tPD

Switch

VLOAD

GND

Open

IDTQS3VH800

INDUSTRIALTEMPERATURERANGE

2.5V/3.3V10-BITHIGHBANDWIDTHBUSSWITCHWITHPRECHARGEDOUTPUTS

ORDERINGINFORMATION

XXXXX

IDTQS

Package

Device Type

Quarter Size Outline Package

QSOP - Green

Thin Shrink Small Outline Package

TSSOP - Green

PAG

2.5V/3.3V 10-Bit High Bandwidth Bus Switch

with Precharged Outputs

3VH800

CORPORATE HEADQUARTERS

for SALES:

for Tech Support:

6024 Silver Creek Valley Road

San Jose, CA 95138

800-345-7015 or 408-284-8200

fax: 408-284-2775

logichelp@idt.com

www.idt.com

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