74HC4518 datasheet(5/7 Pages) PHILIPS

Il numero della parte	74HC4518

Spiegazioni elettronici	Dual synchronous BCD counter

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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5 / 7 page

December 1990

5

Philips Semiconductors

Product speciﬁcation

Dual synchronous BCD counter

74HC/HCT4518

DC CHARACTERISTICS FOR 74HC

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: standard

ICC category: MSI

AC CHARACTERISTICS FOR 74HC

GND = 0 V; tr =tf = 6 ns; CL = 50 pF

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HC

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max. min.

max.

min.

max.

tPHL/ tPLH

propagation delay

nCP0, nCP1 to nQn

66

24

19

210

42

36

265

53

45

315

63

59

ns

2.0

4.5

6.0

Fig.9

tPHL

propagation delay

nMR to nQn

44

16

13

150

30

26

190

38

33

225

45

38

ns

2.0

4.5

6.0

Fig.8

tTHL/ tTLH

output transition time

19

7

6

75

15

13

95

19

16

110

22

19

ns

2.0

4.5

6.0

Fig.9

tW

clock pulse width

HIGH or LOW

80

16

14

25

9

7

100

20

17

120

24

20

ns

2.0

4.5

6.0

Fig.8

tW

master reset pulse width

HIGH

120

24

20

39

14

11

150

30

26

180

36

31

ns

2.0

4.5

6.0

Fig.8

trem

removal time

nMR to nCP0, nCP1

0

−22

−8

−6

0

ns

2.0

4.5

6.0

Fig.8

tsu

set-up time

nCP1 to nCP0;

nCP0 to nCP1

80

16

14

22

8

6

100

20

17

120

24

20

ns

2.0

4.5

6.0

Fig.7

fmax

maximum clock pulse

frequency

nCP0, nCP1

6.0

30

35

18

55

66

4.8

24

28

4.0

20

24

MHz

2.0

4.5

6.0

Fig.8

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