74LVX240MTR datasheet(4/12 Pages) STMICROELECTRONICS

Nome de Peças	74LVX240MTR

Descrição Electrónicos	LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV.) WITH 5V TOLERANT INPUTS

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74LVX240

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Table 8: AC Electrical Characteristics (Input tr = tf = 3ns)

1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-

ing in the same direction, either HIGH or LOW

2) Parameter guaranteed by design

(*) Voltage range is 3.3V

± 0.3V

Table 9: Capacitive Characteristics

1) CPD is defined 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 operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/8 (per circuit)

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

CL

(pF)

TA = 25°C

-40 to 85°C

-55 to 125°C

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

tPLH

tPHL

Propagation Delay

Time

2.7

15

5.7

10.1

1.0

12.5

1.0

14.0

ns

2.7

50

8.2

13.6

1.0

16.0

1.0

17.0

3.3(*)

15

4.7

6.2

1.0

7.5

1.0

8.5

3.3(*)

50

6.8

9.7

1.0

11.0

1.0

12.0

tPZL

tPZH

Output Enable

Time

2.7

15

7.1

13.8

1.0

16.5

1.0

18.0

ns

2.7

50

9.6

17.3

1.0

20.0

1.0

21.5

3.3(*)

15

5.5

8.8

1.0

10.5

1.0

12.0

3.3(*)

50

8.0

12.3

1.0

14.0

1.0

15.0

tPLZ

tPHZ

Output Disable

Time

2.7

50

11.6

16.0

1.0

19.0

1.0

20.0

ns

3.3(*)

50

9.7

11.4

1.0

13.0

1.0

14.0

tOSLH

tOSHL

Output to Output

Skew Time (note

1,2)

2.7

50

0.5

1.0

1.5

ns

3.3(*)

50

0.5

1.0

1.5

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA = 25°C

-40 to 85°C

-55 to 125°C

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

CIN

Input Capacitance

3.3

4

10

pF

COUT

Output

Capacitance

3.3

6

pF

CPD

Power Dissipation

Capacitance

(note 1)

3.3

fIN = 10MHz

17

pF

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