74HC_HCT259

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© NXP B.V. 2012. All rights reserved.

Product data sheet

Rev. 5 — 7 August 2012

8 of 22

NXP Semiconductors

74HC259; 74HCT259

8-bit addressable latch

10. Dynamic characteristics

Table 8.

Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 12.

Symbol Parameter

Conditions

25

C

40 C to +85 C 40 C to +125 C Unit

Min

Typ[1] Max

Min

Max

Min

Max

74HC259

propagation

delay

D to Qn; see Figure 6

[2]

-

58

185

-

230

-

280

ns

-

21

37

-

46

-

56

ns

-

18

-

-

-

-

-

ns

-

17

31

-

39

-

48

ns

An to Qn; see Figure 7

[2]

-

58

185

-

230

-

280

ns

-

21

37

-

46

-

56

ns

-

17

-

-

-

-

-

ns

-

17

31

-

39

-

48

ns

LE to Qn; see Figure 8

[2]

-

55

170

-

215

-

255

ns

-

20

34

-

43

-

51

ns

-

17

-

-

-

-

-

ns

-

16

29

-

37

-

43

ns

HIGH to LOW

propagation

delay

MR to Qn; see Figure 9

-

50

155

-

195

-

235

ns

-

18

31

-

39

-

47

ns

-

15

-

-

-

-

-

ns

-

14

26

-

33

-

40

ns

transition time

see Figure 8

[3]

-

19

75

-

95

-

119

ns

-

7

15

-

19

-

22

ns

-

6

13

-

16

-

19

ns

pulse width

LE HIGH or LOW;

see Figure 8

70

17

-

90

-

105

-

ns

14

6

-

18

-

21

-

ns

12

5

-

15

-

18

-

ns

MR LOW; see Figure 9

70

17

-

90

-

105

-

ns

14

6

-

18

-

21

-

ns

12

5

-

15

-

18

-

ns