IDTQS3LR384 [IDT]

Bus Driver, 3L Series, 2-Func, 5-Bit, True Output, CMOS, PDSO24, QSOP-24;


型号：	IDTQS3LR384
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Bus Driver, 3L Series, 2-Func, 5-Bit, True Output, CMOS, PDSO24, QSOP-24 驱动光电二极管逻辑集成电路
文件：	总5页 (文件大小：40K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDTQS3LR384

INDUSTRIALTEMPERATURERANGE

HIGH-SPEEDCMOS10-BITLOWPOWERLOWRESISTANCEBUSSWITCH

QUICKSWITCH^®PRODUCTS

HIGH-SPEED CMOS

IDTQS3LR384

10-BIT LOW POWER, LOW

RESISTANCE BUS SWITCH

DESCRIPTION:

FEATURES:

TheQS3LR384providesasetoftenhigh-speedCMOSTTL-compatible

busswitches. Twobanksof5switchesarecontrolledbyindependentBus

Enable(BE)signals. TheverylowRON resistance(2.5Ω)oftheQS3LR384

allowsinputstobeconnectedwithoutaddingpropagationdelayandwithout

generating additional ground bounce noise.

• Enhanced N channel FET with no inherent diode to Vcc

• 2.5Ω bidirectional switches connect inputs to outputs

• Zero propagation delay, zero ground bounce

• Ultra low power with 0.2µA typical Icc

• Undershoot clamp diodes on all switch and control pins

• Two enables control five bits each

• Available in SOIC, QSOP, and TSSOP packages

The low ON resistance of the QS3LR384 makes it ideal for PCI hot-

plugging or hot-swapping applications.

The QS3LR384 is characterized for operation at -40°C to +85°C.

APPLICATIONS:

• Hot-swapping and hot-docking (low resistance for PCI and

Compact PCI applications)

• Voltage translation (5V to 3.3V)

• Power Conservation

• Capacitance reduction and isloation

• Bus Isolation

• Clock Gating

FUNCTIONALBLOCKDIAGRAM

BEA

BEB

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

INDUSTRIAL TEMPERATURE RANGE

NOVEMBER 1999

1999 Integrated Device Technology, Inc.

DSC-5547/1

IDTQS3LR384

INDUSTRIALTEMPERATURERANGE

HIGH-SPEEDCMOS10-BITLOWPOWERLOWRESISTANCEBUSSWITCH

PINCONFIGURATION

ABSOLUTEMAXIMUMRATINGS⁽¹⁾

Symbol

Description

Supply Voltage to Ground

DC Switch Voltage VS

Max

–0.5 to +7

–3

Unit

(2)

VTERM

(3)

BEA

Vcc

VTERM

(3)

VTERM

DC Input Voltage VIN

VAC

AC Input Voltage (pulse width ≤20ns)

DC Output Current

IOUT

PMAX

TSTG

120

Maximum Power Dissipation

Storage Temperature

0.5

–65 to +150

°C

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. VCC terminals.

3. All terminals except VCC .

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

Pins

Typ.

Max.⁽¹⁾

Unit

GND

BEB

ControlInputs

Quickswitch Channels (Switch OFF)

NOTE:

SOIC/ QSOP/ TSSOP

TOP VIEW

1. This parameter is guaranteed but not production tested.

PINDESCRIPTION

Pin Names

A0 - A9

I/O

Description

Bus A

Bus B

B0 - B9

BEA, BEB

Bus Switch Enable

FUNCTIONTABLE⁽¹⁾

BEA

BEB

B0 - A4

B5 - B9

Hi-Z

Function

Disconnect

Connect

Hi-Z

A0 - A4

Hi-Z

A5 - A9

Connect

A0 - A4

Connect

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

Z = High-Impedance

IDTQS3LR384

INDUSTRIALTEMPERATURERANGE

HIGH-SPEEDCMOS10-BITLOWPOWERLOWRESISTANCEBUSSWITCH

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE

FollowingConditionsApplyUnlessOtherwiseSpecified:

Industrial: TA = –40°C to +85°C, VCC = 5V ± 5%

Symbol

VIH

Parameter

Input HIGH Voltage

Test Conditions

Guaranteed Logic HIGH for Control Pins

GuaranteedLogicLOWforControlPins

0V ≤ VIN ≤ VCC

Min.

Typ.⁽¹⁾Max.

Unit

—

0.8

±1

VIL

InputLOWVoltage

—

IIN

InputLeakageCurrent(ControlInputs)

Off-StateCurrent(Hi-Z)

—

±0.01

2.5

µA

Ω

IOZ

0V ≤ VOUT ≤ VCC, Switches OFF

VCC = Min., VIN = 0V, ION = 30mA

VCC = Min., VIN = 2.4V, ION = 15mA

VIN = VCC = 5V, IOUT = -5µA

—

RON

Switch ON Resistance

—

8.5

4.3

PassVoltage⁽²⁾

3.7

NOTES:

1. Typical values are at VCC = 5V and TA = 25°C.

2. Pass voltage is guaranteed but not production tested.

TYPICAL ON RESISTANCE vs V AT V = 5V

RON

(ohms)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

VIN

(Volts)

IDTQS3LR384

INDUSTRIALTEMPERATURERANGE

HIGH-SPEEDCMOS10-BITLOWPOWERLOWRESISTANCEBUSSWITCH

POWERSUPPLYCHARACTERISTICS

Symbol

ICCQ

Parameter

TestConditions⁽¹⁾

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

VCC = Max., VIN = 3.4V, f = 0

Typ.

0.2

Max.

Unit

µA

Quiescent Power Supply Current

Power Supply Current per Input HIGH⁽²⁾

Dynamic Power Supply Current per MHz⁽³⁾

∆ICC



2.5

ICCD

VCC = Max., A and B Pins Open,

Control Inputs Toggling @ 50% Duty Cycle



0.25

mA/MHz

NOTES:

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

2. Per TTL-driven input (V^IN= 3.4V, control inputs only). A and B pins do not contribute to ∆Icc.

3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant

AC or DC currents as they transition. This parameter is guaranteed but not production tested.

SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE

TA = -40°C to +85°C, VCC = 5V ± 5%

CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.

(1)

Symbol

Parameter

Min.

Typ.

Max.

Unit

tPLH

tPHL

DataPropagationDelay⁽²⁾

Ax to Bx, Bx to Ax



0.12⁽³⁾

tPZL

tPZH

SwitchTurn-OnDelay

BEA, BEB to Ax, Bx

SwitchTurn-OffDelay⁽²⁾

BEA, BEB to Ax, Bx

1.5



6.5

5.5

tPLZ

tPHZ

NOTES:

1. Minimums are guaranteed but not production tested.

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 0.12ns 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.

IDTQS3LR384

INDUSTRIALTEMPERATURERANGE

HIGH-SPEEDCMOS10-BITLOWPOWERLOWRESISTANCEBUSSWITCH

ORDERINGINFORMATION

IDTQS

XXXXX

Package

Process

Device Type

Industrial (-40°C to +85°C)

Blank

Small Outline IC

Quarter Size Outline Package

Thin Shrink Small Outline Package

High Speed CMOS 10-Bit Low Power, Low

Resistance Bus Switch

3LR384

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Santa Clara, CA 95054

for SALES:

800-345-7015 or 408-727-6116

fax: 408-492-8674

for Tech Support:

logichelp@idt.com

(408) 654-6459

www.idt.com

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