IDT54FCT521BPB [IDT]

FAST CMOS 8-BIT IDENTITY COMPARATOR; FAST的CMOS 8位身份比较器


型号：	IDT54FCT521BPB
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	FAST CMOS 8-BIT IDENTITY COMPARATOR FAST的CMOS 8位身份比较器比较器
文件：	总6页 (文件大小：106K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT54/74FCT521

IDT54/74FCT521A

IDT54/74FCT521B

IDT54/74FCT521C

FAST CMOS 8-BIT

IDENTITY COMPARATOR

Integrated Device Technology, Inc.

• Product available in Radiation Tolerant and Radiation

Enhanced versions

• JEDEC standard pinout for DIP and LCC

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

FEATURES:

• IDT54/74FCT521 equivalent to FAST^TMspeed

• IDT54/74FCT521A 35% faster than FAST

• IDT54/74FCT521B 50% faster than FAST

• IDT54/74FCT521C 60% faster than FAST

• Equivalent to FAST output drive over full temperature

and voltage supply extremes

DESCRIPTION:

TheIDT54/74FCT521/A/B/Care8-bitidentitycomparators

built using an advanced dual metal CMOS technology. These

devices compare two words of up to eight bits each and

provide a LOW output when the two words match bit for bit.

The expansion input IA = B also serves as an active LOW

enable input.

• IOL = 48mA (commercial), and 32mA (military)

• CMOS power levels (1mW typ. static)

• TTL input and output level compatible

• CMOS output level compatible

• Substantially lower input current levels than FAST

(5µA max.)

FUNCTIONAL BLOCK DIAGRAM

PIN CONFIGURATIONS

IA=B

VCC

OA=B

P20-1

D20-1

SO20-2

E20-1

GND

OA=B

2604 drw 01

DIP/SOIC/CERPACK

TOP VIEW

INDEX

20 19

L20-2

IA=B

2604 drw 03

9 10 11 12 13

2604 drw 02

LCC

TOP VIEW

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

FAST is a trademark of National Semiconductor Co.

MILITARY AND COMMERCIAL TEMPERATURE RANGES

MAY 1992

1992 Integrated Device Technology, Inc.

7.16

DSC-4617/2

IDT54/74FCT521/A/B/C FAST CMOS

8-BIT IDENTITY COMPARATOR

MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN DESCRIPTION

FUNCTION TABLE⁽¹⁾

Pin Names

Description

INPUTS

OUTPUT

- A

- B

Word A Inputs

Word B Inputs

A = B

A, B

A = B

A = B*

A ≠ B

A = B*

A ≠ B

Expansion or Enable Input (Active LOW)

Identity Output (Active LOW)

2604 tbl* 05

NOTE:

2604 tbl* 06

1. H = HIGH Voltage Level

L = LOW Voltage Level

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

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

CAPACITANCE (TA = +25°C, f = 1.0MHz)

Symbol

Rating

Commercial

Military

Unit

Symbol

Parameter⁽¹⁾

Input

Capacitance

Conditions

IN = 0V

Typ. Max. Unit

(2)

VTERM

Terminal Voltage

with Respect to

GND

–0.5 to +7.0

OUT

Output

Capacitance

VOUT = 0V

(3)

VTERM

Terminal Voltage

with Respect to

GND

–0.5 to VCC

NOTE:

2604 tbl* 02

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

Operating

Temperature

Under Bias

Storage

0 to +70

–55 to +125

0.5

–55 to +125

–65 to +135

–65 to +150

0.5

°C

TBIAS

TSTG

°C

Temperature

Power

Dissipation

DC Output

Current

IOUT

120

NOTES:

2604 tbl* 01

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.

2. Input and VCC terminals only.

3. Outputs and I/O terminals only.

7.16

IDT54/74FCT521/A/B/C FAST CMOS

8-BIT IDENTITY COMPARATOR

MILITARY AND COMMERCIAL TEMPERATURE RANGES

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC – 0.2V

Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%

Symbol

Parameter

Input HIGH Level

Test Conditions⁽¹⁾

Min. Typ.⁽²⁾Max.

Unit

VIH

Guaranteed Logic HIGH Level

2.0

—

0.8

VIL

II H

Input LOW Level

Guaranteed Logic LOW Level

Input HIGH Current

VCC = Max.

VI = VCC

VI = 2.7V

VI = 0.5V

VI = GND

—

µA

—

5⁽⁴⁾

–5⁽⁴⁾

–5

II L

Input LOW Current

—

VIK

IOS

Clamp Diode Voltage

Short Circuit Current

Output HIGH Voltage

VCC = Min., IN = –18mA

VCC = Max.⁽³⁾, VO = GND

—

–0.7

–120

VCC

4.3

GND

–1.2

—

–60

VHC

2.4

—

VOH

VCC = 3V, VIN = VLC or VHC, IOH = –32µA

—

VCC = Min.

IOH = –300µA

—

VIN = VIH or VIL

IOH = –12mA MIL.

IOH = –15mA COM'L.

—

VOL

Output LOW Voltage

VCC = 3V, VIN = VLC or VHC, IOL = 300µA

VLC

(4)

VCC = Min.

IOL = 300µA

—

GND VLC

VIN = VIH or VIL

IOL = 32mA MIL.

IOL = 48mA COM'L.

—

0.3

0.5

—

NOTES:

2604 tbl* 03

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

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

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

4. This parameter is guaranteed but not tested.

7.16

IDT54/74FCT521/A/B/C FAST CMOS

8-BIT IDENTITY COMPARATOR

MILITARY AND COMMERCIAL TEMPERATURE RANGES

POWER SUPPLY CHARACTERISTICS VLC = 0.2V; VHC = VCC – 0.2V

Symbol

Parameter

Test Conditions⁽¹⁾

Min. Typ.⁽²⁾Max.

Unit

ICC

Quiescent Power Supply Current

VCC = Max.

VIN ≥ VHC; VIN ≤ VLC

Quiescent Power Supply Current VCC = Max.

TTL Inputs HIGH

VIN = 3.4V⁽³⁾

—

0.2

1.5

∆ICC

—

0.5

2.0

ICCD

Dynamic Power Supply Current⁽⁴⁾VCC = Max.

VIN ≥ VHC

VIN ≤ VLC

0.15

0.25

mA/

MHz

Outputs Open

One Input Toggling

50% Duty Cycle

VCC = Max.

Outputs Open

fi = 10MHz

One Bit Toggling

50% Duty Cycle

Total Power Supply Current⁽⁵⁾

VIN ≥ VHC

—

1.7

2.0

4.0

5.0

VIN ≤ VLC (FCT)

VIN = 3.4V

VIN = GND

NOTES:

2604 tbl* 04

1. For conditions shown as Max. or Min., 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. IC = IQUIESCENT + IINPUTS + IDYNAMIC

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

ICC = Quiescent Current

∆ICC = 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 = Input Frequency

Ni = Number of Inputs at fi

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

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

IDT54/74FCT521

Com'l. Mil.

Min.⁽²⁾Max. Min.⁽²⁾Max. Min.⁽²⁾Max. Min.⁽²⁾Max. Min.⁽²⁾Max. Min.⁽²⁾Max. Min.⁽²⁾Max. Min.⁽²⁾Max.

IDT54/74FCT521A

IDT54/74FCT521B

IDT54/74FCT521C

Com'l. Mil.

Symbol Parameter Condition⁽¹⁾

Unit

PLH

PHL

Propagation

Delay

= 50pF

= 500Ω

1.5 11.0 1.5 15.0 1.5

7.2

1.5

9.5

1.5

5.5

1.5

7.3

1.5

4.5

1.5

5.1

An or Bn to

OA = B

PLH

PHL

Propagation

Delay

1.5 10.0 1.5

9.0

1.5

6.0

1.5

7.8

1.5

4.6

1.5

6.0

1.5

4.1

1.5

4.5

IA = B to

OA = B

NOTES:

1. See test circuit and waveforms.

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

2604 tbl* 07

7.16

IDT54/74FCT521/A/B/C FAST CMOS

8-BIT IDENTITY COMPARATOR

MILITARY AND COMMERCIAL TEMPERATURE RANGES

TEST CIRCUITS AND WAVEFORMS

TEST CIRCUITS FOR ALL OUTPUTS

VCC

SWITCH POSITION

Test

Switch

Closed

Open

7.0V

Open Drain

Disable Low

Enable Low

500Ω

V OUT

VIN

Pulse

Generator

D.U.T.

All Other Tests

50pF

C L

500Ω

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

2604 tbl 08

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

Generator.

SET-UP, HOLD AND RELEASE TIMES

PULSE WIDTH

1.5V

DATA

INPUT

t_SU

t _H

LOW-HIGH-LOW

1.5V

TIMING

INPUT

PULSE

t _W

ASYNCHRONOUS CONTROL

t _REM

PRESET

CLEAR

ETC.

1.5V

HIGH-LOW-HIGH

PULSE

1.5V

SYNCHRONOUS CONTROL

PRESET

CLEAR

CLOCK ENABLE

ETC.

1.5V

t SU

PROPAGATION DELAY

ENABLE AND DISABLE TIMES

ENABLE

DISABLE

CONTROL

INPUT

1.5V

SAME PHASE

INPUT TRANSITION

1.5V

t_PZL

t_PLZ

t_PHL

t_PLH

3.5V

1.5V

3.5V

OUTPUT

NORMALLY

LOW

V_OH

SWITCH

CLOSED

OUTPUT

1.5V

0.3V

V_OL

V_OH

t_PZH

t_PHZ

V_OL

t_PLH

t_PHL

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

1.5V

OPPOSITE PHASE

INPUT TRANSITION

1.5V

NOTES

2604 drw 04

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

Disable-HIGH.

2. Pulse Generator for All Pulses: Rate ≤ 1.0 MHz; ZO ≤ 50Ω; tF ≤ 2.5ns;

tR ≤ 2.5ns.

7.16

IDT54/74FCT521/A/B/C FAST CMOS

8-BIT IDENTITY COMPARATOR

MILITARY AND COMMERCIAL TEMPERATURE RANGES

ORDERING INFORMATION

IDT

FCT

XXXX

Temp. Range

Device Type

Package

Process

Blank

Commercial

MIL-STD-883, Class B

Plastic DIP

CERDIP

CERPACK

Leadless Chip Carrier

Small Outline IC

521

8-Bit Comparator

521A

521B

521C

Fast 8-Bit Comparator

Very Fast 8-Bit Comparator

Super Fast 8-Bit Comparator

–55

°C to +125°C

0°

C to +70°C

2604 cnv* 09

7.16

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