IDT74FCT521TQ8 [IDT]

Identity Comparator, FCT Series, 8-Bit, Inverted Output, CMOS, PDSO20, QSOP-20;


型号：	IDT74FCT521TQ8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Identity Comparator, FCT Series, 8-Bit, Inverted Output, CMOS, PDSO20, QSOP-20 光电二极管逻辑集成电路
文件：	总6页 (文件大小：90K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT54/74FCT521T/AT/BT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

MILITARYANDINDUSTRIALTEMPERATURERANGES

IDT54/74FCT521T/AT/BT/CT

FAST CMOS 8-BIT

IDENTITY COMPARATOR

FEATURES:

DESCRIPTION:

• Std., A, B, and C grades

The IDT54/74FCT521T is an 8-bit identity comparator built using an

advanced dual metal CMOS technology. These devices compare two

words ofuptoeightbits eachandprovidealowoutputwhenthetwowords

match bit for bit. The expansion input IA = B also serves as an active low

enableinput.

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

• CMOS power levels

• True TTL input and output compatibility:

– VOH = 3.3V (typ.)

– VOL = 0.3V (typ.)

• High Drive outputs (-15mA IOH, 48mA IOL)

• Meets or exceeds JEDEC standard 18 specifications

• Military product compliant to MIL-STD-883, Class B and DESC

listed (dual marked)

• Power off disable outputs permit "live insertion"

• Available in the following packages:

– Industrial: SOIC, SSOP, QSOP

– Military: CERDIP, LCC

FUNCTIONALBLOCKDIAGRAM

OA=B

IA=B

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

MILITARY AND INDUSTRIAL TEMPERATURE RANGES

JUNE 2002

DSC-2572/11

IDT54/74FCT521T/AT/BT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

MILITARYANDINDUSTRIALTEMPERATURERANGES

PINCONFIGURATION

IA=B

VCC

O^A=B

INDEX

20 19

10 11 12 13

GND

CERDIP/ SOIC/ SSOP/ QSOP

TOP VIEW

LCC

TOP VIEW

ABSOLUTEMAXIMUMRATINGS⁽¹⁾

PINDESCRIPTION

Symbol

Description

Max

Unit

Pin Names

Description

(2)

VTERM

Terminal Voltage with Respect to GND

–0.5 to +7

A0 - A7

B0 - B7

IA = B

Word A Inputs

Word B Inputs

(3)

VTERM

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

TSTG

IOUT

Storage Temperature

DC Output Current

–65 to +150

–60 to +120

° C

Expansion or Enable Input (Active LOW)

Identity Output (Active LOW)

O^{A = B}

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.

FUNCTIONTABLE⁽¹⁾

Inputs

Output

2. Inputs and Vcc terminals only.

3. Output and I/O terminals only.

IA=B

A, B

OA=B

A = B*

A≠ B

A = B*

A≠ B

CAPACITANCE (TA = +25°C, F = 1.0MHz)

Symbol

Parameter⁽¹⁾

Input Capacitance

Output Capacitance

Conditions

Typ.

Max. Unit

NOTE:

1. H = HIGH Voltage Level

CIN

VIN = 0V

L = LOW Voltage Level

COUT

VOUT = 0V

*A0 = B0, A1 = B1, A2 = B2, etc.

NOTE:

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

IDT54/74FCT521T/AT/BT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

MILITARYANDINDUSTRIALTEMPERATURERANGES

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE

FollowingConditionsApplyUnlessOtherwiseSpecified:

Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%; Military: TA = –55°C to +125°C, VCC = 5.0V ±10%

Symbol

VIH

VIL

IIH

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.

—

–60

2.4

—

Input HIGH Current⁽⁴⁾

Input LOW Current⁽⁴⁾

Input HIGH Current⁽⁴⁾

Clamp Diode Voltage

Short Circuit Current

OutputHIGHVoltage

VI = 2.7V

VI = 0.5V

—

µA

IIL

VCC = Max.

—

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

VCC = Min., IIN = –18mA

—

µA

VIK

IOS

–0.7

–120

3.3

–1.2

–225

—

(3)

VCC = Max., VO = GND

VOH

VCC = Min

IOH = –6mA MIL

IOH = –8mA IND

IOH = –12mA MIL

IOH = –15mA IND

IOL = 32mA MIL

IOL = 48mA IND

VIN = VIH or VIL

—

VOL

Output LOWVoltage

VCC = Min

—

0.3

0.5

VIN = VIH or VIL

ICC

Input Hysteresis

—

200

—

Quiescent Power Supply Current

VCC = Max.

0.01

VIN = GND or VCC

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.

IDT54/74FCT521T/AT/BT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

MILITARYANDINDUSTRIALTEMPERATURERANGES

POWERSUPPLYCHARACTERISTICS

Symbol

Parameter

Test Conditions⁽¹⁾

Min.

Typ.⁽²⁾

Max.

Unit

ΔICC

Quiescent Power Supply Current

TTL Inputs HIGH

VCC = Max.

VIN = 3.4V

—

0.5

(3)

ICCD

Dynamic Power Supply

Current⁽⁴⁾

VCC = Max.

Outputs Open

One Input Toggling

50% Duty Cycle

VIN = VCC

VIN = GND

—

0.15

0.25

mA/

MHz

Total Power Supply Current⁽⁶⁾

VCC = Max.

Outputs Open

fi = 10MHz

One Bit Toggling

50% Duty Cycle

VIN = VCC

—

1.5

1.8

3.5

4.5

VIN = GND

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.

SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE-INDUSTRIAL

FCT521AT

Min.⁽²⁾

FCT521CT

Symbol

tPLH

Parameter

PropagationDelay

Ax or Bx to OA = B

PropagationDelay

IA = B to OA = B

Condition⁽¹⁾

CL = 50pF

RL = 500Ω

Max.

Min.⁽²⁾

Max.

Unit

1.5

7.2

1.5

4.5

tPHL

tPLH

1.5

4.1

tPHL

SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE-MILITARY

54FCT521T

Min.⁽²⁾

Max.

54FCT521AT

54FCT521BT

54FCT521CT

Min.⁽²⁾Max. Unit

Symbol

tPLH

Parameter

PropagationDelay

Ax or Bx to OA = B

PropagationDelay

IA = B to OA = B

Condition⁽¹⁾

CL = 50pF

RL = 500Ω

Min.⁽²⁾

Max.

Min.⁽²⁾

Max.

1.5

9.5

7.8

1.5

7.3

1.5

5.1

tPHL

tPLH

1.5

4.5

tPHL

NOTES:

1. See test circuit and waveforms.

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

IDT54/74FCT521T/AT/BT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

MILITARYANDINDUSTRIALTEMPERATURERANGES

TESTCIRCUITSANDWAVEFORMS

VCC

SWITCHPOSITION

7.0V

Test

Switch

Closed

Open

500W

Open Drain

Disable Low

Enable Low

VOUT

VIN

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

1.5V

INPUT

LOW-HIGH-LOW

tSU

1.5V

PULSE

1.5V

TIMING

INPUT

ASYNCHRONOUS CONTROL

tREM

PRESET

CLEAR

ETC.

1.5V

HIGH-LOW-HIGH

PULSE

1.5V

SYNCHRONOUS CONTROL

PRESET

1.5V

CLEAR

tSU

CLOCK ENABLE

ETC.

Pulse Width

Octal Link

Set-Up, Hold, and Release Times

ENABLE

DISABLE

1.5V

SAME PHASE

CONTROL

INPUT

1.5V

INPUT TRANSITION

tPLH

tPHL

tPZL

tPLZ

VOH

1.5V

VOL

OUTPUT

3.5V

1.5V

3.5V

VOL

VOH

OUTPUT

NORMALLY

LOW

SWITCH

CLOSED

0.3V

1.5V

tPZH

tPHZ

OPPOSITE PHASE

INPUT TRANSITION

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.

IDT54/74FCT521T/AT/BT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

MILITARYANDINDUSTRIALTEMPERATURERANGES

ORDERINGINFORMATION

XXXX

IDT

FCT

Package

Process

Device Type

Temp. Range

Blank

Industrial

MIL-STD-883, Class B

Industrial Options

SOG

PYG

Small Outline IC

SOIC - Green

Shrink Small Outline Package

SSOP - Green

Quarter-size Small Outline Package

QSOP - Green

Military Options

CERDIP

Leadless Chip Carrier

Fast CMOS 8-Bit Identity Comparator

521T

521AT

521BT

521CT

– 55°C to +125°C

– 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

for Tech Support:

logichelp@idt.com

www.idt.com

IDT74FCT521TQ8 [IDT]

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