5962-9091601MSX [TI]

AC SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, CDFP20, CERPACK-20;


型号：	5962-9091601MSX
厂家：	TEXAS INSTRUMENTS
描述：	AC SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, CDFP20, CERPACK-20 CD 输出元件逻辑集成电路
文件：	总9页 (文件大小：175K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

September 1998

54AC520 54ACT520

•

8-Bit Identity Comparator

General Description

The ’AC/’ACT520 are expandable 8-bit comparators. They

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 I_{A = B}also serves as an active LOW enable

input.

n Expandable to any word length

n 20-pin package

n Outputs source/sink 24 mA

n ’ACT520 has TTL-compatible inputs

n Standard Microcircuit Drawing (SMD)

54AC520: 5962-90916

54ACT520: 5962-89793

Features

n Compares two 8-bit words in 6.5 ns typ

Logic Symbols

IEEE/IEC

DS100234-1

DS100234-4

Pin Names

A₀–A₇

Description

Word A Inputs

B₀–B₇

T_{A = B}

O_{A = B}

Word B Inputs

Expansion or Enable Input

Identity Output

™

FACT is a trademark of Fairchild Semiconductor Corporation.

DS100234

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Connection Diagrams

Pin Assignment

for DIP and Flatpak

Pin Assignment

for LCC

DS100234-3

DS100234-2

Inputs

A, B

Outputs

I_{A = B}

O_{A = B}

A = B

≠

A = B

≠

H = HIGH Voltage Level

L = LOW Voltage Level

= B , A = B , A = B , etc.

0 1 1 2 2

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Logic Diagram

DS100234-5

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Recommended Operating

Conditions

Supply Voltage (V_CC

’AC

)

2.0V to 6.0V

4.5V to 5.5V

0V to V_CC

Supply Voltage (V_CC

)

−0.5V to +7.0V

’ACT

DC Input Diode Current (I_IK

V_I= −0.5V

)

Input Voltage (V_I)

Output Voltage (V_O)

−20 mA

+20 mA

0V to V_CC

V_I= V_CC+ 0.5V

Operating Temperature (T_A)

54AC/ACT

DC Input Voltage (V_I)

−0.5V to V_CC+ 0.5V

−55˚C to +125˚C

125 mV/ns

DC Output Diode Current (I_OK

V_O= −0.5V

)

Minimum Input Edge Rate (∆V/∆t)

’AC Devices

−20 mA

+20 mA

V_O= V_CC+ 0.5V

V_INfrom 30% to 70% of V_CC

DC Output Voltage (V_O)

DC Output Source

−0.5V to V_CC+ 0.5V

V_CC3.3V, 4.5V, 5.5V

Minimum Input Edge Rate (∆V/∆t)

’ACT Devices

or Sink Current (I_O)

DC V_CCor Ground Current

50 mA

V_INfrom 0.8V to 2.0V

per Output Pin (I_CCor I_GND

)

V_CC4.5V, 5.5V

125 mV/ns

Storage Temperature (T_STG

Junction Temperature (T_J)

CDIP

)

−65˚C to +150˚C

Note 1: Absolute maximum ratings are those values beyond which damage

to the device may occur. The databook specifications should be met, without

exception, to ensure that the system design is reliable over its power supply,

temperature, and output/input loading variables. National does not recom-

175˚C

™

mend operation of FACT circuits outside databook specifications.

DC Characteristics for ’AC Family Devices

54AC

Symbol

Parameter

V_CC

(V)

T_A

Units

Conditions

−55˚C to +125˚C

Guaranteed Limits

V_IH

Minimum High Level

Input Voltage

3.0

4.5

5.5

3.0

4.5

5.5

3.0

4.5

5.5

2.1

3.15

3.85

0.9

V_OUT= 0.1V

or V_CC− 0.1V

V_IL

Maximum Low Level

Input Voltage

V_OUT= 0.1V

1.35

1.65

2.9

or V_CC− 0.1V

V_OH

Minimum High Level

Output Voltage

I_OUT= −50 µA

4.4

5.4

(Note 2)

V_IN= V_ILor V_IH

3.0

4.5

5.5

3.0

4.5

5.5

2.4

3.7

4.7

0.1

I_OH= −12 mA

I_OH= −24 mA

I_OUT= 50 µA

V_OL

Maximum Low Level

Output Voltage

(Note 2)

V_IN= V_ILor V_IH

3.0

4.5

5.5

0.50

I_OL= 12 mA

I_OL= 24 mA

V_I= V_CC, GND

A Inputs Only

V_I= V_CC

I_IN

Maximum Input

1.0

µA

Leakage Current

Maximum Input

I_IH

5.5

20.0

High Leakage Current

B Inputs Only

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DC Characteristics for ’AC Family Devices (Continued)

54AC

Symbol

Parameter

V_CC

(V)

T_A

Units

Conditions

−55˚C to +125˚C

Guaranteed Limits

−1.5

I_IL

Maximum Input

5.5

V_I= V_CC

Low Leakage Current

B Inputs Only

I_OLD

Minimum Dynamic

(Note 3)

V_OLD= 1.65V Max

I_OHD

I_CC

Output Current

5.5

−50

µA

V_OHD= 3.85V Min

V_IN= V_CC

Maximum Quiescent

Supply Current

80.0

I_CC

Maximum Quiescent

Supply Current

5.5

8.0

V_IN= GND

Note 2: All outputs loaded; thresholds on input associated with output under test.

Note 3: Maximum test duration 2.0 ms, one output loaded at a time.

DC Characteristics for ’ACT Family Devices

54ACT

Symbol

Parameter

V_CC

(V)

T_A

Units

Conditions

−55˚C to +125˚C

Guaranteed Limits

V_IH

V_IL

Minimum High Level

Input Voltage

4.5

5.5

4.5

5.5

4.5

5.5

2.0

0.8

4.4

5.4

V_OUT= 0.1V

or V_CC− 0.1V

V_OUT= 0.1V

or V_CC− 0.1V

I_OUT= −50 µA

Maximum Low Level

Input Voltage

V_OH

Minimum High Level

Output Voltage

(Note 4)

V_IN= V_ILor V_IH

4.5

5.5

4.5

5.5

3.70

4.70

0.1

I_OH= −24 mA

I_OUT= 50 µA

V_OL

Maximum Low Level

Output Voltage

0.1

(Note 4)

V_IN= V_ILor V_IH

4.5

5.5

0.50

I_OL= 24 mA

V_I= V_CC, GND

I_IN

Maximum Input

Leakage Current

Maximum Input

High Leakage Current

Maximum Input

Low Leakage Current

Maximum

1.0

µA

I_IH

5.5

10.0

−1.0

1.6

V_I= V_CC

B Inputs Only

V_I= V_CC

I_IL

B Inputs Only

V_I= V_CC− 2.1V

I_CCT

I_CC/Input

I_OLD

Minimum Dynamic

(Note 5)

V_OLD= 1.65V Max

I_OHD

I_CC

Output Current

5.5

−50

µA

V_OHD= 3.85V Min

V_IN= V_CC

Maximum Quiescent

Supply Current

80.0

or GND

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DC Characteristics for ’ACT Family Devices (Continued)

54ACT

Symbol

Parameter

V_CC

(V)

T_A

Units

Conditions

−55˚C to +125˚C

Guaranteed Limits

8.0

I_CC

Maximum Quiescent

Supply Current

5.5

V_IN= GND

Note 4: All outputs loaded; thresholds on input associated with output under test.

Note 5: Maximum test duration 2.0 ms, one output loaded at a time.

AC Electrical Characteristics

54AC

V_CC

T_A= −55˚C

to +125˚C

C_L= 50 pF

Fig.

No.

Symbol

Parameter

(V)

Units

(Note 6)

Min

1.0

1.5

1.0

1.5

1.0

1.5

1.0

1.5

Max

t_PLH

t_PHL

t_PLH

t_PHL

Propagation Delay

A_nor B_nto O_{A = B}

Propagation Delay

A_nor B_nto O_{A = B}

Propagation Delay

3.3

5.0

3.3

5.0

3.3

5.0

3.3

5.0

14.0

10.5

15.0

11.0

10.0

7.5

_{A = B}to O_{A = B}

Propagation Delay

_{A = B}to O_{A = B}

10.5

8.0

Note 6: Voltage Range 3.3 is 3.3V 0.3V

Voltage Range 5.0 is 5.0V 0.5V

AC Electrical Characteristics

54ACT

V_CC

T_A= −55˚C

to +125˚C

C_L= 50 pF

Fig.

No.

Symbol

Parameter

(V)

Units

(Note 7)

Min

Max

t_PLH

t_PHL

t_PLH

t_PHL

Propagation Delay

A_nor B_nto O_{A = B}

Propagation Delay

A_nor B_nto O_{A = B}

Propagation Delay

5.0

1.5

12.0

8.5

_{A = B}to O_{A = B}

Propagation Delay

_{A = B}to O_{A = B}

9.0

Note 7: Voltage Range 5.0 is 5.0V 0.5V

Capacitance

Symbol

Parameter

Input Capacitance

Power Dissipation Capacitance

Typ

4.5

Units

Conditions

V_CC= OPEN

V_CC= 5.0V

C_IN

C_PD

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Applications

Ripple Expansion

DS100234-6

Parallel Expansion

DS100234-7

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Physical Dimensions inches (millimeters) unless otherwise noted

20 Terminal Ceramic Leadless Chip Carrier (L)

NS Package Number E20A

20 Lead Ceramic Dual-In-Line Package (D)

NS Package Number J20A

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

20 Lead Ceramic Flatpak (F)

NS Package Number W20A

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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and

whose failure to perform when properly used in

accordance with instructions for use provided in the

labeling, can be reasonably expected to result in a

significant injury to the user.

2. A critical component is any component of a life

support device or system whose failure to perform

can be reasonably expected to cause the failure of

the life support device or system, or to affect its

safety or effectiveness.

National Semiconductor

Corporation

Americas

National Semiconductor

Europe

National Semiconductor

Asia Pacific Customer

Response Group

Tel: 65-2544466

Fax: 65-2504466

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Tel: 81-3-5639-7560

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Email: ap.support@nsc.com

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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

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