5.6 Switching Characteristics

Input tr, tf = 6 ns. Unless otherwise specified, CL = 50pF

PARAMETER

VCC(V)

25

℃

-40

℃ to

85

℃

-55

℃ to

125

℃

UNIT

TYP

MAX

MAX

MAX

HC TYPES

tpd

CLK or CLK INH to QH or

Q H

2

165

205

250

ns

4.5

13(3)

33

41

50

ns

6

28

35

43

ns

SH/LD to QH or Q H

2

175

220

265

ns

4.5

14(3)

35

44

53

ns

6

30

37

45

ns

H to QH or Q H

2

150

190

225

ns

4.5

12(3)

30

38

45

ns

6

26

33

38

ns

tt

Output Transition Times

2

75

95

110

ns

4.5

15

19

22

ns

6

13

16

19

ns

CIN

Input Capacitance

10

10

10

pF

CPD

Power Dissipation

Capacitance(1) (2)

5

17

pF

HCT TYPES

tpd

CLK or CLK INH to QH or

Q H

4.5

17(3)

40

50

60

ns

SH/LD to QH or Q H

4.5

17(3)

40

50

60

ns

H to QH or Q H

4.5

14(3)

35

44

53

ns

tt

Output Transition Times

4.5

15

19

22

ns

CIN

Input Capacitance

10

10

10

pF

CPD

Power Dissipation

Capacitance(1) (2)

5

24

pF

(1)

CPD is used to determine the dynamic power consumption, per package.

(2)

PD = VCC 2 fi + Σ (CL VCC 2 + fO) where fi = Input Frequency, fO = Output Frequency, CL = Output Load Capacitance, VCC = Supply

Voltage.

(3)

CL = 15 pF and VCC = 5 V.

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CD54HC165, CD74HC165, CD54HCT165, CD74HCT165

SCHS156D – FEBRUARY 1998 – REVISED NOVEMBER 2021

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