M54HC688DG [STMICROELECTRONICS]

Rad-Hard 8 Bit Equality Comparator;


型号：	M54HC688DG
厂家：	ST
描述：	Rad-Hard 8 Bit Equality Comparator 比较器
文件：	总10页 (文件大小：245K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

M54HC688

M74HC688

8 BIT EQUALITY COMPARATOR

HIGH SPEED

t_PD= 17 ns (TYP.) AT V_CC= 5 V

LOW POWER DISSIPATION

I_CC= 4 µA (MAX.) AT T_A= 25 °C

HIGH NOISE IMMUNITY

V_NIH= V_NIL= 28 % V_CC(MIN.)

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

|I_OH| ₌I_OL= 4 mA (MIN.)

BALANCED PROPAGATION DELAYS

t_PLH= t_PHL

WIDE OPERATING VOLTAGE RANGE

B1R

(Plastic Package)

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

V_CC(OPR) = 2 V TO 6 V

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS688

ORDER CODES :

M54HC688F1R

M74HC688B1R

M74HC688M1R

M74HC688C1R

PIN CONNECTIONS (top view)

DESCRIPTION

The M54/74HC688 utilizes silicon gate C²MOS

technology to achieve operating speeds equivalent

to LSTTL devices. Along with the low power dissi-

pation and high noise immunity of standard C²MOS

integrated circuit, it possesses the driving capability

of 10 LSTTL load. The M54/74HC688 compares bit

for bit two 8-bit words applied on inputs P0 - P7 and

inputs Q0 -Q7 and indicates whether or not they are

equal. A single active low enable is provided to fa-

cilitate cascading several packages to enable com-

parison of words greater than 8 bits. All inputs are

equipped with protection circuit against static dis-

charge and transient excess voltage.

NC =

No Internal

Connection

October 1992

1/10

M54/M74HC688

INPUT AND OUTPUT EQUIVALENT CIRCUIT

TRUTH TABLE

INPUT

OUTPUT

P, Q

P = Q

P ≠ Q

P = Q

X: DON’T CARE

LOGIC DIAGRAM

2/10

M54/M74HC688

PIN DESCRIPTION

IEC LOGIC SYMBOL

PIN No

SYMBOL

NAME AND FUNCTION

Enable Input (Active

LOW)

2, 4, 6, 8,

11, 13, 15,

P0 to P7

Q0 to Q7

Word Inputs

3, 5, 7, 9,

12, 14, 16,

Word Outputs

P = Q

GND

V_CC

Equal to Output

Ground (0V)

Positive Supply Voltage

ABSOLUTE MAXIMUM RATINGS

Symbol

V_CC

V_I

Parameter

Value

-0.5 to +7

Unit

Supply Voltage

DC Input Voltage

-0.5 to V_CC+ 0.5

± 20

V_O

DC Output Voltage

I_IK

DC Input Diode Current

DC Output Diode Current

DC Output Source Sink Current Per Output Pin

^oC

I_OK

± 20

I_O

± 25

I_CCor I_GNDDC V_CCor Ground Current

± 50

P_D

T_stg

T_L

Power Dissipation

500 (*)

Storage Temperature

Lead Temperature (10 sec)

-65 to +150

300

^oC

Absolute MaximumRatingsare those values beyond whichdamage tothe device may occur. Functional operation under these condition isnotimplied.

(*) 500 mW: 65 ^oC derate to 300 mW by 10mW/^oC: 65 ^oC to 85 ^oC

RECOMMENDED OPERATING CONDITIONS

Symbol

V_CC

V_I

Parameter

Value

2 to 6

Unit

Supply Voltage

Input Voltage

Output Voltage

0 to V_CC

V_O

T_op

Operating Temperature: M54HC Series

M74HC Series

-55 to +125

-40 to +85

^oC

t_r, t_f

Input Rise and Fall Time

V_CC= 2 V

V_CC= 4.5 V

V_CC= 6 V

0 to 1000

0 to 500

0 to 400

3/10

M54/M74HC688

DC SPECIFICATIONS

Test Conditions

V_CC

Value

T_A= 25 ^oC

54HC and 74HC

-40 to 85 ^oC -55 to 125 ^oC

Symbol

Parameter

Unit

74HC

54HC

(V)

Min. Typ. Max. Min. Max. Min. Max.

V_IH

High Level Input

Voltage

2.0

4.5

6.0

2.0

4.5

6.0

2.0

4.5

6.0

4.5

6.0

1.5

3.15

4.2

1.5

3.15

4.2

1.5

3.15

4.2

V_IL

Low Level Input

Voltage

0.5

1.35

1.8

0.5

1.35

1.8

0.5

1.35

1.8

V_OH

High Level

Output Voltage

1.9

4.4

5.9

2.0

4.5

6.0

1.9

4.4

1.9

4.4

V_I=

V_IH

I_O=-20 µA

5.9

V_IL

I_O=-4.0 mA 4.18 4.31

4.13

5.63

4.10

5.60

I_O=-5.2 mA 5.68

5.8

0.0

V_OL

Low Level Output 2.0

Voltage

0.1

V_I=

V_IH

I_O= 20 µA

4.5

6.0

4.5

6.0

0.1

V_IL

I_O= 4.0 mA

I_O= 5.2 mA

0.17 0.26

0.18 0.26

±0.1

0.33

±1

0.40

±1

I_I

Input Leakage

6.0

V_I= V_CCor GND

µA

Current

I_CC

Quiescent Supply 6.0 V_I= V_CCor GND

Current

4/10

M54/M74HC688

AC ELECTRICAL CHARACTERISTICS (C_L= 50 pF, Input t_r= t_f= 6 ns)

Test Conditions

Value

-40 to 85 ^oC -55 to 125 ^oC

74HC 54HC

T_A= 25 ^oC

54HC and 74HC

Symbol

Parameter

Unit

V_CC

(V)

Min. Typ. Max. Min. Max. Min. Max.

t_TLH

t_THL

Output Transition

Time

2.0

4.5

6.0

2.0

4.5

6.0

2.0

4.5

6.0

110

t_PLH

t_PHL

Propagation

Delay Time

(Pn, Qn - P = Q)

170

215

255

t_PLH

t_PHL

Propagation

Delay Time

(G - P = Q)

110

140

165

C_IN

Input Capacitance

C_PD(*) Power Dissipation

Capacitance

(*) C_PDisdefined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.

(Refer to Test Circuit). Average operting current can be obtained by the followingequation. I_CC(opr) = C_PD• V_CC• f_IN+ I_CC

SWITCHING CHARACTERISTICS TEST

WAVEFORM

TEST CIRCUIT ICC (Opr.)

INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF

SWITCHINGCHARACTERISTICSTEST.

5/10

M54/M74HC688

Plastic DIP20 (0.25) MECHANICAL DATA

inch

TYP.

DIM.

MIN.

0.254

1.39

TYP.

MAX.

MIN.

0.010

0.055

MAX.

1.65

0.065

0.45

0.25

0.018

0.010

25.4

1.000

8.5

2.54

22.86

0.335

0.100

0.900

7.1

0.280

0.155

3.93

3.3

0.130

1.34

0.053

P001J

6/10

M54/M74HC688

Ceramic DIP20 MECHANICAL DATA

inch

TYP.

DIM.

MIN.

TYP.

MAX.

MIN.

MAX.

0.984

0.307

7.8

3.3

0.130

0.900

0.5

1.78

0.020

0.070

22.86

2.29

0.4

2.79

0.55

1.52

0.31

1.27

0.090

0.016

0.050

0.009

0.020

0.110

0.022

0.060

0.012

0.050

1.27

0.22

0.51

4° (min.), 15° (max.)

7.9

8.13

5.71

0.311

0.320

0.225

P057H

7/10

M54/M74HC688

SO20 MECHANICAL DATA

inch

TYP.

DIM.

MIN.

TYP.

MAX.

2.65

0.20

2.45

0.49

0.32

MIN.

MAX.

0.104

0.007

0.096

0.019

0.012

0.10

0.004

0.35

0.23

0.013

0.009

0.50

0.020

45° (typ.)

12.60

10.00

13.00

10.65

0.496

0.393

0.512

0.419

1.27

0.050

0.450

11.43

7.40

0.50

7.60

1.27

0.75

0.291

0.19

0.299

0.050

0.029

8° (max.)

P013L

8/10

M54/M74HC688

PLCC20 MECHANICAL DATA

inch

TYP.

DIM.

MIN.

9.78

8.89

4.2

TYP.

MAX.

10.03

9.04

MIN.

0.385

0.350

0.165

MAX.

0.395

0.356

0.180

4.57

2.54

0.56

0.100

0.022

7.37

8.38

0.290

0.330

0.004

1.27

5.08

0.38

0.050

0.200

0.015

0.101

1.27

1.14

0.050

0.045

P027A

9/10

M54/M74HC688

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the

consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No

license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned

in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.

SGS-THOMSON Microelectronicsproductsare notauthorized foruse ascritical componentsin life support devices or systems without express

written approval of SGS-THOMSON Microelectonics.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

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10/10

M54HC688DG [STMICROELECTRONICS]

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