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74HC_HCT126

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Product data sheet

Rev. 4 — 1 December 2015

6 of 15

Nexperia

74HC126; 74HCT126

Quad buffer/line driver; 3-state

[1]

tpd is the same as tPLH and tPHL.

ten is the same as tPZL and tPZH.

tdis is the same as tPLZ and tPHZ.

tt is the same as tTHL and tTLH.

[2]

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.

ten

enable time

nOE to nY; see Figure 7

[1]

VCC = 2.0 V

-

41

125

155

190

ns

VCC = 4.5 V

-

15

25

31

38

ns

VCC = 6.0 V

-

12

21

26

32

ns

tdis

disable time

nOE to nY; see Figure 7

[1]

VCC = 2.0 V

-

41

125

155

190

ns

VCC = 4.5 V

-

15

25

31

38

ns

VCC = 6.0 V

-

12

21

26

32

ns

tt

transition time

see Figure 6

[1]

VCC = 2.0 V

-

14

60

75

90

ns

VCC = 4.5 V

-

5

12

15

18

ns

VCC = 6.0 V

-

4

10

13

15

ns

CPD

power dissipation

capacitance

per package;

VI =GND to VCC

[2]

-23

-

-

-

pF

74HCT126

tpd

propagation delay

nA to nY; see Figure 6

[1]

VCC = 4.5 V

-

14

24

30

36

ns

VCC = 5.0 V; CL =15pF

-

11

-

-

-

ns

ten

enable time

nOE to nY; see Figure 7;

VCC =4.5 V

[1]

-13

25

31

38

ns

tdis

disable time

nOE to nY; see Figure 7;

VCC =4.5 V

[1]

-18

28

35

42

ns

tt

transition time

VCC = 4.5 V; see Figure 6

[1]

-

5

12

15

18

ns

CPD

power dissipation

capacitance

per package;

VI =GND to VCC  1.5 V

[2]

-24

-

-

-

pF

Table 7.

Dynamic characteristics …continued

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

Symbol Parameter

Conditions

Tamb = 25 C

Tamb = 40 C to +125 C

Unit

Min

Typ

Max

Max (85

C) Max (125 C)