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M74HC126

Electrical characteristics

14

Table 7. AC electrical characteristics

(Input tr = tf = 6 ns)

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

CL

(pF)

TA = 25 °C

-40 to 85 °C -55 to 125 °C

Min.

Typ. Max. Min. Max.

Min.

Max.

tTLH, tTHL

Output transition

time

2.0

50

-

20

60

-

75

-

90

ns

4.5

6

12

15

18

6.0

5

10

13

15

tPLH, tPHL

Propagation

delay time

2.0

50

36

75

95

110

ns

4.5

9

15

19

22

6.0

8

13

16

19

2.0

150

52

105

130

160

ns

4.5

13

21

26

32

6.0

11

18

22

27

tPZL, tPZH

High impedance

output enable

time

2.0

50

RL = 1 kΩ

36

75

95

110

ns

4.5

9

15

19

22

6.0

8

13

16

19

2.0

150

52

105

130

160

ns

4.5

13

21

26

32

6.0

11

18

22

27

tPLZ, tPHZ

High impedance

output disable

time

2.0

50

RL = 1 kΩ

48

80

100

120

ns

4.5

12

16

20

24

6.0

10

14

17

20

Table 8. Capacitive characteristics

Sym

Parameter

Test

condition

Value

Unit

VCC

(V)

TA = 25°C

-40 to 85 °C

-55 to 125 °C

Min

Typ

Max

Min

Max

Min

Max

CIN

Input capacitance

5.0

-

510

-

10

-

10

pF

CPD

Power dissipation

capacitance(1)

35

1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current

consumption without load (refer to test circuit). Average operating current can be obtained by the following equation:

ICC(opr) = CPD x VCC x fIN + ICC/4(per buffer).