M74HC4520 datasheet(6/12 Pages) STMICROELECTRONICS

No de pièce	M74HC4520

Description	DUAL 4 BIT BINARY COUNTER

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M74HC4520

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AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)

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/2 (per

COUNTER)

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.

tTLH tTHL Output Transition

Time

2.0

30

75

95

110

ns

4.5

8

151922

6.0

7

131619

tPLH tPHL Propagation Delay

Time

(CLOCK, CE - Qn)

2.0

72

160

200

240

ns

4.5

22

32

40

48

6.0

18

27

34

41

tPHL

Propagation Delay

Time

(CLEAR - Qn)

2.0

65

150

190

225

ns

4.5

20

30

38

45

6.0

16

26

33

38

fMAX

Maximum Clock

Frequency

2.0

6

23

4.8

4

MHz

4.5

30

51

24

20

6.0

35

60

28

24

tW(H)

tW(L)

Minimum Pulse

Width

(CLOCK ,CE)

2.0

25

75

95

110

ns

4.5

6

151922

6.0

5

131619

tW(L)

Minimum Pulse

Width

(CLEAR)

2.0

20

75

95

110

ns

4.5

5

151922

6.0

4

131619

tREM

Minimum Removal

Time

(CLEAR)

2.0

21

50

60

75

ns

4.5

3

101215

6.0

3

9

11

13

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

5

101010

pF

CPD

Power Dissipation

Capacitance (note

1)

32

pF

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