74LVC244APG8 [IDT]

TSSOP-20, Reel;


型号：	74LVC244APG8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	TSSOP-20, Reel
文件：	总6页 (文件大小：69K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT74LVC244A

INDUSTRIALTEMPERATURERANGE

3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS

3.3V CMOS

OCTAL BUFFER/DRIVER

IDT74LVC244A

WITH 3-STATE OUTPUTS,

5 VOLT TOLERANT I/O

DESCRIPTION:

FEATURES:

TheLVC244Adeviceis organizedas two4-bitlinedrivers withseparate

output-enable (OE)inputs.WhenOE is low,the device passes data from

the Ainputs tothe Youtputs.WhenOEis high,the outputs are inthe high-

impedancestate.

• 0.5 MICRON CMOS Technology

• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using

machine model (C = 200pF, R = 0)

• VCC = 3.3V ± 0.3V, Normal Range

The LVC244A has been designed with a ±24mA output driver. This

driver is capable of driving a moderate to heavy load while maintaining

speedperformance.

To ensure the high-impedance state during power up or power down,

OE shouldbe tiedtoVCC througha pullupresistor;the minimumvalue of

the resistoris determinedbythe current-sinkingcapabilityofthe driver.

Inputs canbe drivenfromeither3.3Vor5Vdevices.This feature allows

theuseofthisdeviceasatranslatorinamixed3.3V/5Vsystemenvironment.

• VCC = 2.7V to 3.6V, Extended Range

• CMOS power levels (0.4μ W typ. static)

• Rail-to-rail output swing for increased noise margin

• All inputs, outputs, and I/O are 5V tolerant

• Supports hot insertion

• Available in SOIC, SSOP, QSOP, and TSSOP packages

DRIVE FEATURES:

• High Output Drivers: ±24mA

• Reduced system switching noise

APPLICATIONS:

• 5V and 3.3V mixed voltage systems

• Data communication and telecommunication systems

FUNCTIONALBLOCKDIAGRAM

¹OE

²OE

¹Y1

¹Y2

¹Y3

¹Y4

1A1

2A1

²A2

²A3

²A4

²Y1

2Y2

²Y3

²Y4

¹A2

¹A3

¹A4

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

INDUSTRIAL TEMPERATURE RANGE

OCTOBER 1999

DSC-4614/3

IDT74LVC244A

3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS

INDUSTRIALTEMPERATURERANGE

ABSOLUTEMAXIMUMRATINGS⁽¹⁾

PINCONFIGURATION

Symbol

VTERM

TSTG

Description

Terminal Voltage with Respect to GND

Storage Temperature

Max

Unit

–0.5 to +6.5

–65 to +150

–50 to +50

–50

° C

VCC

2OE

1Y1

²A4

¹Y2

2A3

¹Y3

²A2

1Y4

²A1

1OE

1A1

2Y4

¹A2

2Y3

1A3

IOUT

DC Output Current

IIK

IOK

Continuous Clamp Current,

VI < 0 or VO < 0

ICC

ISS

Continuous Current through each

VCC or GND

±100

NOTE:

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.

2Y2

1A4

CAPACITANCE (TA = +25°C, F = 1.0MHz)

Symbol

Parameter⁽¹⁾

Conditions

VIN = 0V

VOUT = 0V

VIN = 0V

Typ.

Max. Unit

²Y1

CIN

Input Capacitance

Output Capacitance

I/O Port Capacitance

4.5

COUT

CI/O

5.5

GND

6.5

NOTE:

1. As applicable to the device type.

SOIC/ SSOP/ QSOP/ TSSOP

TOP VIEW

PINDESCRIPTION

Pin Names

Description

xAx

xYx

xOE

Data Inputs

3-State Outputs

Output Enable Inputs (Active LOW)

(1)

FUNCTION TABLE (EACH BUFFER)

Inputs

Outputs

xYx

xOE

xAx

NOTES:

1. H = HIGH Voltage Level

X = Don’t Care

L = LOW Voltage Level

Z = High-Impedance

IDT74LVC244A

INDUSTRIALTEMPERATURERANGE

3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE

FollowingConditionsApplyUnlessOtherwiseSpecified:

OperatingCondition:TA = –40°C to +85°C

Symbol

Parameter

Test Conditions

Min.

1.7

Typ.⁽¹⁾

—

Max.

—

Unit

VIH

Input HIGH Voltage Level

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

—

VIL

Input LOW Voltage Level

Input Leakage Current

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

—

0.7

0.8

IIH

IIL

VCC = 3.6V

VI = 0 to 5.5V

—

µA

µ A

IOZH

IOZL

High Impedance Output Current

(3-State Output pins)

VCC = 3.6V

VO = 0 to 5.5V

—

IOFF

VIK

Input/Output Power Off Leakage

Clamp Diode Voltage

VCC = 0V, VIN or VO ≤ 5.5V

—

µ A

VCC = 2.3V, IIN = –18mA

–0.7

–1.2

Input Hysteresis

VCC = 3.3V

VCC = 3.6V

—

100

—

µA

ICCL

ICCH

ICCZ

Quiescent Power Supply Current

VIN = GND or VCC

(2)

3.6 ≤ VIN ≤ 5.5V

—

ΔICC

Quiescent Power Supply Current

Variation

One input at VCC - 0.6V, other inputs at VCC or GND

500

µ A

NOTES:

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

2. This applies in the disabled state only.

OUTPUTDRIVECHARACTERISTICS

Symbol

Parameter

TestConditions⁽¹⁾

Min.

VCC – 0.2

Max.

—

Unit

VOH

OutputHIGHVoltage

VCC = 2.3V to 3.6V

IOH = – 0.1mA

IOH = – 6mA

IOH = – 12mA

VCC = 2.3V

VCC = 2.7V

VCC = 3V

—

1.7

—

2.2

—

2.4

—

VCC = 3V

IOH = – 24mA

IOL = 0.1mA

IOL = 6mA

2.2

—

VOL

OutputLOWVoltage

VCC = 2.3V to 3.6V

VCC = 2.3V

—

0.2

0.4

0.7

0.4

0.55

—

IOL = 12mA

IOL = 24mA

—

VCC = 2.7V

VCC = 3V

—

NOTE:

1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.

TA = – 40°C to + 85°C.

IDT74LVC244A

3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS

INDUSTRIALTEMPERATURERANGE

OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C

Symbol

Parameter

Test Conditions

Typical

Unit

CPD

PowerDissipationCapacitanceperBuffer/DriverOutputsenabled

PowerDissipationCapacitanceperBuffer/DriverOutputsdisabled

CL = 0pF, f = 10Mhz

CPD

SWITCHINGCHARACTERISTICS⁽¹⁾

VCC = 2.7V

Max.

VCC = 3.3V ± 0.3V

Symbol

tPLH

Parameter

Min.

Max.

Unit

PropagationDelay

xAx to xYx

—

6.9

1.5

5.9

tPHL

tPZH

OutputEnableTime

xOE to xYx

—

8.6

6.8

—

1.5

—

7.6

6.5

500

tPZL

tPHZ

OutputDisableTime

tPLZ

xOE to xYx

(2)

tSK(o)

OutputSkew

NOTES:

1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.

2. Skew between any two outputs of the same package and switching in the same direction.

IDT74LVC244A

INDUSTRIALTEMPERATURERANGE

3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS

TESTCIRCUITSANDWAVEFORMS

TESTCONDITIONS

VIH

SAME PHASE

INPUT TRANSITION

(1)

(2)

tPHL

Symbol VCC =3.3V±0.3V VCC =2.7V VCC =2.5V±0.2V Unit

tPLH

VOH

VOL

OUTPUT

VLOAD

VIH

2 x Vcc

Vcc

2.7

1.5

300

2.7

1.5

300

Vcc / 2

150

VIH

OPPOSITE PHASE

INPUT TRANSITION

VLZ

VHZ

150

LVC Link

Propagation Delay

VLOAD

Open

GND

VCC

DISABLE

ENABLE

VIH

CONTROL

INPUT

500Ω

tPZL

tPLZ

VIN

VOUT

(1, 2)

Pulse

D.U.T.

VLOAD/2

Generator

OUTPUT

NORMALLY

LOW

SWITCH

VLOAD

V^OL+VLZ

VOL

500Ω

tPHZ

tPZH

VOH

VOH-VHZ

OUTPUT

NORMALLY

HIGH

SWITCH

GND

LVC Link

Test Circuit for All Outputs

LVC Link

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

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

Enable and Disable Times

NOTE:

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

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.

VIH

DATA

INPUT

SWITCHPOSITION

Test

Switch

V^LOAD

GND

Open

t^SU

VIH

TIMING

INPUT

Open Drain

Disable Low

Enable Low

tREM

VIH

ASYNCHRONOUS

CONTROL

Disable High

Enable High

VIH

SYNCHRONOUS

CONTROL

All Other Tests

tSU

VIH

LVC Link

Set-up, Hold, and Release Times

INPUT

tPLH1

t^PHL1

V^OH

VOL

LOW-HIGH-LOW

OUTPUT 1

PULSE

tSK (x)

VOH

VOL

HIGH-LOW-HIGH

PULSE

OUTPUT 2

LVC Link

tPLH2

tPHL2

Pulse Width

tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1

LVC Link

Output Skew - tSK(X)

NOTES:

1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs.

2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.

IDT74LVC244A

3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS

INDUSTRIALTEMPERATURERANGE

ORDERINGINFORMATION

IDT

LVC

XXXX

Device Type Package

Temp. Range

Bus-Hold

Small Outline IC (gull wing)

SOG

SOIC - Green

Shrink Small Outline Package

PYG

SSOP - Green

Quarter Size Small Outline Package

QSOP - Green

PGG

Thin Shrink Small Outline Package

TSSOP - Green

244A

Octal Buffer/Driver with 3-State Outputs, 24mA

Blank

No Bus-hold

–40°C to +85°C

CORPORATE HEADQUARTERS

6024 Silver Creek Valley Road

San Jose, CA 95138

for SALES:

800-345-7015 or 408-284-8200

fax: 408-284-2775

www.idt.com

for Tech Support:

logichelp@idt.com

74LVC244APG8 [IDT]

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