M54HC298 datasheet(5/11 Pages) STMICROELECTRONICS

Part #	M54HC298

Description	QUAD 2 CHANNEL MULTIPLEXER/REGISTER

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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

Symbol

Parameter

Test Conditions

Value

Unit

VCC

(V)

TA =25

oC

54HC and 74HC

-40 to 85

oC

74HC

-55 to 125

oC

54HC

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)

2.0

12

50

65

75

ns

4.5

3

101315

6.0

2

9

11

13

ts

Minimum Set-up

Time

(W. S.)

2.0

30

75

95

110

ns

4.5

8

151922

6.0

6

131619

th

Minimum Hold

Time

(A, B, C, D)

2.0

25

30

40

ns

4.5

5

6

8

6.0

4

5

7

th

Minimum Hold

Time

(W. S.)

2.0

0

ns

4.5

0

6.0

0

CIN

Input Capacitance

5

10

pF

CPD (*)

Power Dissipation

Capacitance

39

pF

(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD

•VCC •fIN +ICC/4 (per bit), and the CPD for

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

M54/M74HC298

5/11

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