M74HC298RM13TR datasheet(5/11 Pages) STMICROELECTRONICS

Part #	M74HC298RM13TR

Description	QUAD 2 CHANNEL MULTIPLEXER/REGISTER

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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M74HC298

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AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)

CAPACITIVE CHARACTERISTICS

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 BIT),

and the CPD for operating current can be obtained by the following equation : CPD = 27 + 12 x n

Symbol

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.

tTLH tTHL Output Transition

Time

2.0

30

75

95

110

ns

4.5

8

151922

6.0

7

131619

tPLH tPHL Propagation Delay

Time (CLOCK - Q)

2.0

45

125

155

190

ns

4.5

15

25

31

38

6.0

13

21

26

32

fMAX

Maximum Clock

Frequency

2.0

7

22

5.6

4.6

MHz

4.5

35

67

28

23

6.0

41

79

33

25

tW(H)

tW(L)

Minimum Pulse

Width (CLOCK)

2.0

18

75

95

110

ns

4.5

6

151922

6.0

6

131619

tS

Minimum Set-up

Time (A, B, C, D to

CLOCK)

2.0

12

50

65

75

ns

4.5

3

101315

6.0

2

9

11

13

tS

Minimum Set-up

Time (W. S. to

CLOCK)

2.0

30

75

95

110

ns

4.5

8

151922

6.0

6

131619

tH

Minimum Hold

Time (A, B, C, D to

CLOCK)

2.0

25

30

40

ns

4.5

5

6

8

6.0

4

5

7

tH

Minimum Hold

Time (W. S. to

CLOCK)

2.0

0

ns

4.5

0

6.0

0

Symbol

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

5

101010

pF

CPD

Power Dissipation

Capacitance (note

1)

5.0

39

pF

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