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74HC_HCT4002

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Product data sheet

Rev. 5 — 26 May 2016

6 of 15

Nexperia

74HC4002; 74HCT4002

Dual 4-input NOR gate

10. Dynamic characteristics

[1]

tpd is the same as tPHL and tPLH.

[2]

tt is the same as tTHL and tTLH.

[3]

CPD is used to determine the dynamic power dissipation (PD in W):

PD =CPD  VCC2  fi  N+  (CL  VCC2  fo) where:

fi = input frequency in MHz;

fo = output frequency in MHz;

CL = output load capacitance in pF;

VCC = supply voltage in V;

N = number of inputs switching;

 (C

L  VCC

2

 f

o) = sum of outputs.

Table 7.

Dynamic characteristics

GND = 0 V; CL = 50 pF; for load circuit see Figure 8.

Symbol Parameter

Conditions

25

C

40 C to +125 C Unit

Min

Typ

Max

Max

(85

C)

Max

(125

C)

74HC4002

tpd

propagation delay

nA, nB, nC or nD to nY;

see Figure 7

[1]

VCC = 2.0 V

-

30

100

125

150

ns

VCC = 4.5 V

-

11

20

25

30

ns

VCC = 6.0 V

-

9

17

21

26

ns

VCC =5.0 V; CL =15pF

-

9

-

-

-

ns

tt

transition time

see Figure 7

[2]

VCC = 2.0 V

-

19

75

95

110

ns

VCC = 4.5 V

-

7

15

19

22

ns

VCC = 6.0 V

-

6

13

16

19

ns

CPD

power dissipation

capacitance

per package; VI =GND to VCC

[3]

-16-

-

-

pF

74HCT4002

tpd

propagation delay

nA, nB, nC or nD to nY;

see Figure 7

[1]

VCC = 4.5 V

-

13

22

28

33

ns

VCC = 5.0 V; CL =15pF

-

11

-

-

-

ns

tt

transition time

VCC = 4.5 V; see Figure 7

[2]

-

7

15

19

22

ns

CPD

power dissipation

capacitance

per package;

VI =GND to VCC  1.5 V

[3]

-22-

-

-

pF