74LV4040DB datasheet(7/14 Pages) PHILIPS

部件名	74LV4040DB

功能描述	12-stage binary ripple counter

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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Philips Semiconductors

Product specification

74LV4040

12-stage binary ripple counter

1998 Jun 23

7

AC CHARACTERISTICS

GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 500W

SYMBOL

PARAMETER

WAVEFORM

CONDITION

LIMITS

–40 to +85

°C

LIMITS

–40 to +125

°C

UNIT

VCC(V)

MIN

TYP1

MAX

MIN

MAX

1.2

–

60

–

Propagation delay

2.0

–

27

43

–

54

tPHL/tPLH

Propagation delay

CP to Q0

Figure 7, 9

2.7

–

19

31

–

38

ns

CP to Q0

3.0 to 3.6

–

162

26

–

32

4.5 to 5.5

–

13

17

–

22

1.2

–

40

–

Propagation delay

2.0

–

18

29

–

54

tPHL/tPLH

Propagation delay

Qn to Qn+1

Figure

7, 9

2.7

–

13

21

–

38

ns

Qn to Qn+1

3.0 to 3.6

–

112

18

–

32

4.5 to 5.5

–

73

12

–

22

1.2

–

55

–

Propagation delay

2.0

–

27

44

–

54

tPHL

Propagation delay

MR to Qn

Figure

8, 9

2.7

–

19

31

–

38

ns

MR to Qn

3.0 to 3.6

–

162

26

–

32

4.5 to 5.5

–

113

17

–

22

2.0

35

7

–

41

54

tW

Clock pulse width

Figure

7

2.7

25

5

–

30

–

ns

tW

HIGH to LOW

Figure

7

3.0 to 3.6

20

42

–

24

–

ns

4.5 to 5.5

15

33

–

18

–

2.0

35

11

–

41

–

tW

Master reset pulse

Figure

8

2.7

25

9

–

30

–

ns

tW

width HIGH

Figure

8

3.0 to 3.6

20

82

–

24

–

ns

4.5 to 5.5

15

73

–

18

–

1.2

–

10

–

Removal time

2.0

22

5

–

26

–

trem

Removal time

MR to CP

Figure

8

2.7

16

4

–

19

–

ns

MR to CP

3.0 to 3.6

13

32

–

15

–

4.5 to 5.5

10

23

–

12

–

2.0

14

60

–

12

–

f

Maximum clock

Figure

7

2.7

19

76

–

16

–

MHz

fmax

pulse frequency

Figure

7

3.0 to 3.6

24

942

–

20

–

MHz

4.5 to 5.5

36

1123

–

30

–

NOTES:

1. Unless otherwise stated, all typical values are at Tamb = 25°C.

2. Typical value measured at VCC = 3.3V.

3. Typical value measured at VCC = 5.0V.

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