IDT74FCT2244AT_16 [IDT]

FAST CMOS OCTAL BUFFER/LINE DRIVER;


型号：	IDT74FCT2244AT_16
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	FAST CMOS OCTAL BUFFER/LINE DRIVER 驱动
文件：	总6页 (文件大小：80K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT74FCT2244AT/CT

INDUSTRIALTEMPERATURERANGE

FASTCMOSOCTALBUFFER/LINEDRIVER

FAST CMOS OCTAL

BUFFER/LINE DRIVER

IDT74FCT2244AT/CT

FEATURES:

• A and C grades

• Low input and output leakage ≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility:

– VOH = 3.3V (typ.)

– VOL = 0.3V (typ.)

• Meets or exceeds JEDEC standard 18 specifications

• Resistor outputs (-15mA IOH, 12mA IOL)

• Reduced system switching noise

• Available in SOIC and QSOP packages

DESCRIPTION:

The IDT octal buffer/line driver is built using an advanced dual metal

CMOS technology. The FCT2244T is designed to be employed as a

memory and address driver, clock driver, and bus-oriented transmitter/

receiver which provides improved board density.

TheFCT2244Thasbalancedoutputdrivewithcurrentlimitingresistors.

Thisofferslowgroundbounce, minimalundershoot, andcontrolledoutput

fall times, reducing the need for external series terminating resistors. The

FCT2244T is a plug-in replacement for the FCT244T.

FUNCTIONAL BLOCK DIAGRAM

OEA

IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc.

INDUSTRIAL TEMPERATURE RANGE

NOVEMBER 2016

DSC-5587/11

IDT74FCT2244AT/CT

FASTCMOSOCTALBUFFER/LINEDRIVER

INDUSTRIALTEMPERATURERANGE

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

PIN CONFIGURATION

Symbol

Description

Max

Unit

(2)

VTERM

Terminal Voltage with Respect to GND

–0.5 to +7

(3)

OEA

VTERM

Terminal Voltage with Respect to GND –0.5 to VCC+0.5

VCC

OEB

OA0

DB0

OA1

TSTG

IOUT

Storage Temperature

DC Output Current

–65 to +150

–60 to +120

° C

DA0

OB0

DA1

OB1

DA2

OB2

DA3

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. No terminal voltage may exceed

Vcc by +0.5V unless otherwise noted.

DB1

OA2

DB2

2. Inputs and Vcc terminals only.

3. Output and I/O terminals only.

OA3

DB3

OB3

CAPACITANCE (TA = +25°C, F = 1.0MHz)

Symbol

Parameter⁽¹⁾

Input Capacitance

Output Capacitance

Conditions

Typ.

Max. Unit

GND

CIN

VIN = 0V

COUT

VOUT = 0V

SOIC / QSOP

TOP VIEW

NOTE:

1. This parameter is measured at characterization but not tested.

PIN DESCRIPTION

Pin Names

OEA, OEB

Dxx

Description

3-State Output Enable Inputs (Active LOW)

Inputs

Oxx

Outputs

FUNCTION TABLE⁽¹⁾

Inputs

OEA

OEB

Outputs

NOTE:

1. H = HIGH Voltage Level

X = Don’t Care

L = LOW Voltage Level

Z = High Impedance

IDT74FCT2244AT/CT

FASTCMOSOCTALBUFFER/LINEDRIVER

INDUSTRIALTEMPERATURERANGE

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

FollowingConditionsApplyUnlessOtherwiseSpecified:

Industrial: TA = –40°C to +85°C, VCC = 5.0V 5%

Symbol

VIH

VIL

Parameter

Input HIGH Level

Test Conditions⁽¹⁾

Guaranteed Logic HIGH Level

Min.

Typ.⁽²⁾

—

Max.

—

0.8

Unit

Input LOW Level

Guaranteed Logic LOW Level

VCC = Max.

—

IIH

Input HIGH Current⁽⁴⁾

Input LOW Current⁽⁴⁾

VI = 2.7V

VI = 0.5V

VI = 2.7V

VI = 0.5V

—

µA

IIL

VCC = Max.

—

IOZH

IOZL

High Impedance Output Current

(3-State Output Pins)⁽⁴⁾

Input HIGH Current⁽⁴⁾

Clamp Diode Voltage

Input Hysteresis

VCC = Max.

—

VCC = Max., VI = VCC (Max.)

VCC = Min., IIN = –18mA

—

µA

VIK

–0.7

200

0.01

–1.2

—

ICC

Quiescent Power Supply Current

VCC = Max.

VIN = GND or VCC

OUTPUT DRIVE CHARACTERISTICS

Symbol

Parameter

OutputLOWCurrent

Output HIGH Current

Output HIGH Voltage

Test Conditions⁽¹⁾

Min.

Typ.⁽²⁾

Max.

—

Unit

IODL

IODH

VOH

VCC = 5V, VIN = VIH or VIL, VOUT = 1.5V⁽³⁾

-16

2.4

-48

—

VCC = Min

IOH = –15mA

3.3

—

VIN = VIH or VIL

VCC = Min

VOL

Output LOWVoltage

IOL = 12mA

—

0.3

0.5

VIN = VIH or VIL

NOTES:

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

2. Typical values are at VCC = 5.0V, +25°C ambient.

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

4. The test limit for this parameter is 5µA at TA = -55°C.

IDT74FCT2244AT/CT

FASTCMOSOCTALBUFFER/LINEDRIVER

INDUSTRIALTEMPERATURERANGE

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions⁽¹⁾

Min.

Typ.⁽²⁾

Max.

Unit

ΔICC

Quiescent Power Supply Current

TTL Inputs HIGH

VCC = Max.

VIN = 3.4V⁽³⁾

—

0.5

ICCD

Dynamic Power Supply

Current⁽⁴⁾

VCC = Max.

Outputs Open

VIN = VCC

VIN = GND

—

0.06

0.12

mA/

MHz

OEA or OEB = GND

One Input Toggling

50% Duty Cycle

Total Power Supply Current⁽⁶⁾

VCC = Max.

Outputs Open

fi = 10MHz

VIN = VCC

VIN = GND

—

0.6

0.9

1.2

3.2

2.2

3.2

50% Duty Cycle

OEA or OEB = GND

One Bit Toggling

VIN = 3.4V

VIN = GND

VCC = Max.

Outputs Open

fi = 2.5MHz

VIN = VCC

VIN = GND

3.4⁽⁵⁾

11.4⁽⁵⁾

50% Duty Cycle

OEA or OEB = GND

Four Bits Toggling

VIN = 3.4V

VIN = GND

NOTES:

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

2. Typical values are at VCC = 5.0V, +25°C ambient.

3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of ΔICC formula. These limits are guaranteed but not tested.

6. IC = IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)

ICC = Quiescent Current

ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

fi = Output Frequency

Ni = Number of Outputs at fi

All currents are in milliamps and all frequencies are in megahertz.

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

74FCT2244AT

74FCT2244CT

Symbol

tPLH

Parameter

Condition⁽¹⁾

CL = 50pF

RL = 500Ω

Min.⁽²⁾

Max.

Min.⁽²⁾

Max.

Unit

PropagationDelay

Dx to Ox

1.5

4.8

1.5

4.1

tPHL

tPZH

OutputEnableTime

1.5

6.2

5.6

5.8

5.2

tPZL

tPHZ

OutputDisableTime

tPLZ

NOTES:

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

IDT74FCT2244AT/CT

INDUSTRIALTEMPERATURERANGE

FASTCMOSOCTALBUFFER/LINEDRIVER

TEST CIRCUITS AND WAVEFORMS

SWITCH POSITION

Test

7.0V

Switch

Closed

Open

500W

Open Drain

Disable Low

Enable Low

OUT

Pulse

Generator

D.U.T

All Other Tests

50pF

500W

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

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

Octal Link

Test Circuits for All Outputs

DATA

INPUT

1.5V

LOW-HIGH-LOW

PULSE

1.5V

TIMING

INPUT

ASYNCHRONOUS CONTROL

PRESET

CLEAR

ETC.

SYNCHRONOUS CONTROL

REM

1.5V

HIGH-LOW-HIGH

PULSE

1.5V

PRESET

CLEAR

CLOCK ENABLE

ETC.

tSU

Pulse Width

Octal Link

Set-Up, Hold, and Release Times

ENABLE

DISABLE

SAME PHASE

INPUT TRANSITION

1.5V

CONTROL

INPUT

1.5V

PLH

PHL

PZL

tPLZ

VOH

OUTPUT

3.5V

1.5V

3.5V

1.5V

VOL

OUTPUT

NORMALLY

LOW

SWITCH

CLOSED

tPLH

0.3V

VOL

tPZH

tPHZ

OPPOSITE PHASE

INPUT TRANSITION

1.5V

VOH

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

1.5V

Octal Link

Propagation Delay

Enable and Disable Times

NOTES:

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

2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.

IDT74FCT2244AT/CT

FASTCMOSOCTALBUFFER/LINEDRIVER

INDUSTRIALTEMPERATURERANGE

ORDERING INFORMATION

XXXX

FCT

Device

Type

Package

Temperature

Range

Tube

Tape and Reel

Blank

Green

Small Outline IC (PSG20)

Quarter-size Small Outline Package (PCG20)

2244AT

2244CT

Fast CMOS Octal Buffer/Line Driver

−40°C to +85°C

Datasheet Document History

09/28/2009 Pg. 6

09/26/2011 Pg. 2,6

11/26/2016 Pg. 6

Updated the ordering information by removing the "IDT" notation and non RoHS part.

Correct Outputs in Function Table. Updated ordering information to include tube or tray and tape & reel.

Updatedorderinginformationdiagramtemperaturesymbol,removedtrayandcreatedGreenoptioningreaterdetail.

CORPORATE HEADQUARTERS

6024 Silver Creek Valley Road

San Jose, CA 95138

for SALES:

for Tech Support:

logichelp@idt.com

800-345-7015 or 408-284-8200

fax: 408-284-2775

www.idt.com

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