Nexperia

74HC390; 74HCT390

Dual decade ripple counter

10. Dynamic characteristics

Table 8. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit, see Fig. 7.

25 °C

-40 °C to

+85 °C

-40 °C to

+125 °C

Symbol Parameter

Conditions

Min Typ [1] Max

Min

Max

Min

Max

Unit

74HC390

nCP0 to nQ0; see Fig. 5

[2]

VCC = 2.0 V

-

47

145

-

180

-

220 ns

VCC = 4.5 V

-

17

29

-

36

-

44

ns

VCC = 5 V; CL = 15 pF

-

14

-

-

-

-

-

ns

VCC = 6.0 V

-

14

25

-

31

-

38

ns

nCP1 to nQ1; see Fig. 5

VCC = 2.0 V

-

50

155

-

195

-

235 ns

VCC = 4.5 V

-

18

31

-

39

-

47

ns

VCC = 5 V; CL = 15 pF

-

15

-

-

-

-

-

ns

VCC = 6.0 V

-

14

26

-

33

-

40

ns

nCP1 to nQ2; see Fig. 5

VCC = 2.0 V

-

74

210

-

265

-

315 ns

VCC = 4.5 V

-

27

42

-

53

-

63

ns

VCC = 5 V; CL = 15 pF

-

23

-

-

-

-

-

ns

VCC = 6.0 V

-

22

36

-

45

-

54

ns

nCP1 to nQ3; see Fig. 5

VCC = 2.0 V

-

50

155

-

195

-

235 ns

VCC = 4.5 V

-

18

31

-

39

-

47

ns

VCC = 5 V; CL = 15 pF

-

15

-

-

-

-

-

ns

tpd

propagation

delay

VCC = 6.0 V

-

14

26

-

33

-

40

ns

nMR to nQn; see Fig. 6

VCC = 2.0 V

-

52

165

-

205

-

250 ns

VCC = 4.5 V

-

19

33

-

41

-

50

ns

VCC = 5 V; CL = 15 pF

-

16

-

-

-

-

-

ns

tPHL

HIGH to LOW

propagation

delay

VCC = 6.0 V

-

15

28

-

35

-

43

ns

nQn; see Fig. 5

[3]

VCC = 2.0 V

-

19

75

-

95

-

110 ns

VCC = 4.5 V

-

7

15

-

19

-

22

ns

tt

transition time

VCC = 6.0 V

-

6

13

-

16

-

19

ns

74HC_HCT390

All information provided in this document is subject to legal disclaimers.

© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 5 — 18 October 2021

6 / 15