Nexperia

74HC161

Presettable synchronous 4-bit binary counter; asynchronous reset

10. Dynamic characteristics

Table 7. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Fig. 14.

25 °C

-40 °C to +85 °C -40 °C to +125 °C

Symbol Parameter

Conditions

Min Typ Max

Min

Max

Min

Max

Unit

CP to Qn; see Fig. 9

[1]

VCC = 2.0 V

-

61

190

-

240

-

285

ns

VCC = 4.5 V

-

22

38

-

48

-

57

ns

VCC = 5.0 V; CL = 15 pF

-

19

-

-

-

-

-

ns

VCC = 6.0 V

-

18

32

-

41

-

48

ns

CP to TC; see Fig. 9

VCC = 2.0 V

-

69

215

-

270

-

325

ns

VCC = 4.5 V

-

25

43

-

54

-

65

ns

VCC = 5.0 V; CL = 15 pF

-

21

-

-

-

-

-

ns

VCC = 6.0 V

-

20

37

-

46

-

55

ns

CET to TC; see Fig. 10

VCC = 2.0 V

-

33

150

-

190

-

225

ns

VCC = 4.5 V

-

12

30

-

38

-

45

ns

VCC = 5.0 V; CL = 15 pF

-

10

-

-

-

-

-

ns

tpd

propagation

delay

VCC = 6.0 V

-

10

26

-

38

-

31

ns

MR to Qn; see Fig. 11

VCC = 2.0 V

-

63

210

-

265

-

315

ns

VCC = 4.5 V

-

23

42

-

53

-

63

ns

VCC = 5.0 V; CL = 15 pF

-

20

-

-

-

-

-

ns

VCC = 6.0 V

-

18

36

-

45

-

54

ns

MR to TC; see Fig. 11

VCC = 2.0 V

-

63

220

-

275

-

330

ns

VCC = 4.5 V

-

23

44

-

55

-

66

ns

VCC = 5.0 V; CL = 15 pF

-

20

-

-

-

-

-

ns

tPHL

HIGH to LOW

propagation

delay

VCC = 6.0 V

-

18

37

-

47

-

56

ns

see Fig. 9 and Fig. 10

[2]

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

CP; HIGH or LOW; see Fig. 9

VCC = 2.0 V

80

22

-

100

-

120

-

ns

VCC = 4.5 V

16

8

-

20

-

24

-

ns

VCC = 6.0 V

14

6

-

17

-

20

-

ns

MR; LOW; see Fig. 11

VCC = 2.0 V

80

19

-

100

-

120

-

ns

VCC = 4.5 V

16

7

-

20

-

24

-

ns

tW

pulse width

VCC = 6.0 V

14

6

-

17

-

20

-

ns

74HC161

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 5 — 16 March 2021

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