IDT74LVC4245APGG8 [IDT]

Bus Transceiver, LVC/LCX/Z Series, 1-Func, 8-Bit, True Output, CMOS, PDSO24, GREEN, TSSOP-24;


型号：	IDT74LVC4245APGG8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Bus Transceiver, LVC/LCX/Z Series, 1-Func, 8-Bit, True Output, CMOS, PDSO24, GREEN, TSSOP-24 光电二极管逻辑集成电路
文件：	总8页 (文件大小：134K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

CMOS OCTAL BUS

IDT74LVC4245A

TRANSCEIVER AND 3.3V TO 5V

SHIFTER WITH 3-STATE OUT-

PUTS AND 5 VOLT TOLERANT I/O

DESCRIPTION:

FEATURES:

The LVC4245A is manufactured using advanced dual metal CMOS

• 0.5 MICRON CMOS Technology

• VCCA = 5V ± 0.5V

technology.This octalnoninvertingbus transceivercontains twoseparate

supplyrails; BporthasVCCB,whichissetat3.3V,andAporthasVCCA,which

issetat5V. Thisallowsfortranslationfroma3.3Vtoa5Venvironment,and

vice-versa.

Thisdeviceisidealforasynchronouscommunicationbetweentwobuses

(AandB).Thedirectioncontrolpin(DIR)controls thedirectionofdataflow.

Theoutputenablepin(OE)overridesthedirectioncontrolanddisablesboth

ports.Allinputs are designedwithhysteresis forimprovednoise margin.

The LVC4245A has been designed with a ±24mA output driver. This

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

speedperformance.

• VCCB = 2.7V to 3.6V

• 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

DIR

¹⁶B6

¹⁵B7

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

INDUSTRIAL TEMPERATURE RANGE

February 20, 2009

DSC-4754/3

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

PINCONFIGURATION

ABSOLUTEMAXIMUMRATINGS

(1)

FOR VCCB OR VCCB

Symbol

VTERM

TSTG

Description

Max

Unit

VCCB (3.3V)

(5V) VCCA

DIR

Terminal Voltage with Respect to GND

Storage Temperature

–0.5 to +6.5

–65 to +150

–50 to +50

–50

° C

VCCB (3.3V)

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.

CAPACITANCE (TA = +25°C, F = 1.0MHz)

Symbol

Parameter⁽¹⁾

Conditions

VIN = 0V or VCCA

VCCA = Open

Typ. Max. Unit

GND

CIN

Input Capacitance

—

GND

CI/O

I/O Port Capacitance⁽²⁾VOUT = VCCA or GND 11

VCCA = 5V

SOIC/ SSOP/ QSOP/ TSSOP

TOP VIEW

I/O Port Capacitance⁽³⁾VIN = VCCB or GND

VCCB = 3.3V

NOTES:

1. As applicable to the device type.

2. For A port only.

3. For B port only.

PINDESCRIPTION

Pin Names

Description

DIR

Output Enable Input (Active LOW)

Direction Control Input

Port A Inputs or 3-State Outputs

Port B Inputs or 3-State Outputs

FUNCTIONTABLE⁽¹⁾

Inputs

DIR

Outputs

Bus B Data to Bus A

Bus A Data to Bus B

HighZstate

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don’t Care

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE(APORT)

FollowingConditionsApplyUnlessOtherwiseSpecified:

Operating Condition: TA = –40°C to +85°C, VCCA = 5V ± 0.5V

(1)

Symbol

Parameter

Test Conditions

Min.

Typ.⁽²⁾

Max.

Unit

VIH

Input HIGH Voltage Level

VCCA = 4.5V to 5.5V

—

VIL

IIH

IIL

Input LOW Voltage Level

Input Leakage Current

VCCA = 4.5V to 5.5V

VCCA = 5.5V

—

0.8

VI = 0 to 5.5V

µA

IOZH

IOZL

High Impedance Output Current

(3-State Output pins)

VCCA = 5.5V

VO = 0 to 5.5V

—

µA

Input Hysteresis

VCCA = 5V

—

100

—

µA

ICCL

ICCH

ICCZ

Quiescent Power Supply Current

VCCA = 5.5V

VIN = GND or VCCA

ΔICC

Quiescent Power Supply Current

Variation

One input at 3.4V, other inputs at VCCA or GND

VCCA = 4.5V to 5.5V

—

1.5

NOTES:

1. VCCB = 2.7V to 3.6V.

2. Typical values are at VCCA = 5V, +25°C ambient.

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE(BPORT)

FollowingConditionsApplyUnlessOtherwiseSpecified:

OperatingCondition:TA = –40°C to +85°C, VCCB =2.7Vto3.6V

(1)

Symbol

Parameter

Test Conditions

Min.

Typ.⁽²⁾

Max.

Unit

VIH

Input HIGH Voltage Level

VCCB = 2.7V to 3.6V

—

VIL

IOZH

IOZL

Input LOW Voltage Level

High Impedance Output Current

(3-State Output pins)

VCCB = 2.7V to 3.6V

VCCB = 3.6V

—

0.8

VO = 0 to VCCB

µA

Input Hysteresis

VCCB = 3.3V

VCCB = 3.6V

—

100

—

µA

ICCL

ICCH

ICCZ

Quiescent Power Supply Current

VIN = GND or VCCB

ΔICC

Quiescent Power Supply Current

Variation

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

VCCB = 2.7V to 3.6V

—

500

µ A

NOTES:

1. VCCA = 5V ± 0.5V.

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

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

OUTPUT DRIVE CHARACTERISTICS, VCCA = 5V ± 0.5V (A PORT)

Symbol

Parameter

OutputHIGHVoltage

(B Port to A Port)

TestConditions⁽¹⁾

IOH = – 0.1mA

Min.

4.3

5.3

3.7

4.7

—

Max.

—

Unit

VOH

VCCA = 4.5V

VCCA = 5.5V

VCCA = 4.5V

VCCA = 5.5V

VCCA = 4.5V

VCCA = 5.5V

VCCA = 4.5V

VCCA = 5.5V

—

IOH = – 24mA

IOL = 0.1mA

IOL = 24mA

—

VOL

OutputLOWVoltage

(B Port to A Port)

0.2

0.55

—

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, VCCB = 2.7V to 3.6V.

OUTPUT DRIVE CHARACTERISTICS, VCCB = 2.7V TO 3.6V (B PORT)

Symbol

Parameter

OutputHIGHVoltage

(A Port to B Port)

TestConditions⁽¹⁾

Min.

VCC– 0.2

2.2

Max.

—

Unit

VOH

VCCB = 2.7V to 3.6V

IOH = – 0.1mA

IOH = – 12mA

VCCB = 2.7V

VCCB = 3V

—

2.4

—

VCCB = 3V

IOH = – 24mA

IOL = 0.1mA

IOL = 12mA

IOL = 24mA

—

VOL

OutputLOWVoltage

(A Port to B Port)

VCCB = 2.7V to 3.6V

VCCB = 2.7V

VCCB = 3V

—

0.2

0.4

0.55

—

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, VCCA = 5V ± 0.5V.

OPERATING CHARACTERISTICS, TA = 25°C

VCCA = 5V, VCCB = 3.3V

Symbol

CPD

Parameter

Test Conditions

Typical

39.5

Unit

PowerDissipationCapacitanceperTransceiverOutputsenabled

PowerDissipationCapacitanceperTransceiverOutputsdisabled

CL = 0pF, f = 10Mhz

CPD

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

SWITCHINGCHARACTERISTICS⁽¹⁾

VCCA = 5V ± 0.5V

VCCB = 2.7V to 3.6V

Symbol

tPLH

tPHL

tPLH

tPHL

tPZL

tPLZ

Parameter

Min.

Max.

6.3

6.7

6.1

Unit

PropagationDelay

Ax to Bx

PropagationDelay

Bx to Ax

OutputEnableTime

OE to Bx

8.8

9.8

tPZL

tPLZ

OutputEnableTime

OE to Ax

8.1

7.7

7.8

tPLZ

OutputDisableTime

OE to Bx

tPHZ

tPLZ

OutputDisableTime

OE to Ax

tPHZ

5.8

NOTE:

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

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

LOADCIRCUITANDVOLTAGEWAVEFORMS

PARAMETERMEASUREMENTINFORMATION(APORT)

TESTCONDITIONS

TEST

t^PLH/tPHL

t^PLZ/tPZL

2 x VCC

Open

GND

500Ω

Open

From Output

Under Test

2 x VCC

tPHZ /tPZH

GND

CL = 50pF

(see Note A)

500Ω

Load Circuit

Output

Control

VCC

1.5V

Input

1.5V

tPZL

tPLZ

tPHZ

Output

Waveform 1

S1 at 2 X VCC

(see Note B)

Voltage Waveforms Pulse Duration

VCC

VOL+0.3V

VOL

50% VCC

tPZH

VOH

VOH-0.3V

Output

Waveform 2

S1 at GND

50% VCC

(see Note B)

VCC

1.5V

Input

Voltage Waveforms Enable and Disable Times

Low- and High-Level Enabling

tPHL

tPLH

VOH

50% VCC

Output

VOL

Voltage Waveforms Propagation Delay Times

Noninverting Outputs

NOTES:

A. CL includes probe and jig capacitance.

B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.

C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns.

D. The outputs are measured one at a time with one transition per measurement.

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

LOADCIRCUITANDVOLTAGEWAVEFORMS

PARAMETERMEASUREMENTINFORMATION(BPORT)

TESTCONDITIONS

TEST

t^PLH/tPHL

t^PLZ/tPZL

Open

500Ω

From Output

Under Test

GND

t^PHZ/tPZH

GND

CL = 50pF

(see Note A)

500Ω

Load Circuit

Output

Control

1.5V

Input

1.5V

tPZL

tPLZ

tPHZ

Output

Waveform 1

S1 at 7V

Voltage Waveforms Pulse Duration

3.5V

VOL+0.3V

VOL

1.5V

(see Note B)

tPZH

VOH

VOH-0.3V

Output

Waveform 2

S1 at GND

1.5V

(see Note B)

1.5V

Input

Voltage Waveforms Enable and Disable Times

Low- and High-Level Enabling

tPHL

tPLH

VOH

1.5V

Output

VOL

Voltage Waveforms Propagation Delay Times

Noninverting Outputs

NOTES:

A. CL includes probe and jig capacitance.

B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.

C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns.

D. The outputs are measured one at a time with one transition per measurement.

IDT74LVC4245A

CMOSOCTALBUSTRANSCEIVERAND3.3VTO5VSHIFTER

INDUSTRIALTEMPERATURERANGE

ORDERINGINFORMATION

LVC

XXXX

Temp. Range

Bus-Hold Device Type Package

Small Outline IC (gull wing)

SOIC - Green

Shrink Small Outline Package

SSOP - Green

Quarter Size Small Outline Package

QSOP - Green

Thin Shrink Small Outline Package

TSSOP - Green

SOG

PYG

PGG

4245A

Octal Bus Transceiver and 3.3V to 5V Shifter with 3-State

Outputs, 24mA

Blank

No Bus-hold

–40°C to +85°C

CORPORATE HEADQUARTERS

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San Jose, CA 95138

for SALES:

800-345-7015 or 408-284-8200

fax: 408-284-2775

for Tech Support:

logichelp@idt.com

www.idt.com

IDT74LVC4245APGG8 [IDT]

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