5.6 Switching Characteristics (continued)

Input tr, tf = 6 ns. Unless otherwise specified, CL = 50pF. (see Parameter Measurement Information)

PARAMETER

VCC(V)

25

℃

-40

℃ to

85

℃

-55

℃ to

125

℃

UNIT

TYP

MAX

MAX

MAX

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

28

(3)

pF

HCT TYPES

tpd

nCLK A to nQA

4.5

17

(3)

40

50

60

ns

nCLK B to nQB

4.5

43

51

65

ns

nCLK B to nQC

4.5

55

69

83

ns

nCLK B to nQD

4.5

18

(3)

42

53

63

ns

nCLK A to nQC

4.5

84

105

126

ns

CLR to Qn

4.5

18

(3)

42

53

63

ns

tt

Output Transition Times

4.5

15

19

22

ns

CIN

Input Capacitance

10

(4)

10

(4)

10

(4)

pF

CPD

Power Dissipation

Capacitance(1) (2)

5

32

(3)

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.

(4)

CL = 15 pF

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CD74HC390, CD54HCT390, CD74HCT390

SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022

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