5.5 Prerequisite for Switching Characteristics

PARAMETER

VCC (V)

25

℃

-40

℃ to 85℃

-55

℃ to 125℃

UNIT

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HC TYPES

fMAX

Maximum input pulse

frequency

2

6

5

4

MHz

4.5

30

25

20

6

35

29

24

tW

Input pulse width

2

80

100

120

ns

4.5

16

20

24

6

14

17

20

tREM

Reset removal time

2

50

65

75

ns

4.5

10

13

15

6

9

11

13

tW

Reset pulse width

2

80

100

120

ns

4.5

16

20

24

6

14

17

20

HCT TYPES

fMAX

Maximum input pulse

frequency

4.5

25

20

16

MHz

tW

Input pulse width

4.5

20

25

30

ns

tREC

Reset recovery time

4.5

10

13

15

ns

tW

Reset pulse width

4.5

20

25

30

ns

5.6 Switching Characteristics

Input tr, tf = 6 ns. See Parameter Measurement Information

PARAMETER

TEST

CONDITIONS

VCC (V)

25

℃

-40

℃ to 85℃ -55℃ to 125℃

UNIT

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HC TYPES

tPLH,

tPHL

Propagation delay time

CP to Q1' Output

CL = 50 pF

2

140

175

210

ns

4.5

28

35

42

CL = 15 pF

5

11

CL = 50 pF

6

24

30

36

tPLH,

tPHL

Qn to Qn + 1

CL = 50 pF

2

75

95

110

ns

4.5

15

19

22

CL = 15 pF

5

4

CL = 50 pF

6

13

16

19

tPLH,

tPHL

MR to Qn

CL = 50 pF

2

170

215

255

ns

4.5

34

43

51

5

14

6

29

37

43

tTLH,

tTHL

Output transition time

CL = 50 pF

2

75

95

110

ns

4.5

15

19

22

6

13

16

19

CIN

Input capacitance

CL = 50 pF

10

10

10

pF

CPD

Power dissipation capacitance(1) (2)

CL = 15 pF

5

40

pF

HCT TYPES

CD54HC4040, CD74HC4040, CD54HCT4040, CD74HCT4040

SCHS203E – NOVEMBER 1998 – REVISED JULY 2022

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