74VHC273_04 datasheet(5/14 Pages) STMICROELECTRONICS

No. de pieza	74VHC273

Descripción Electrónicos	OCTAL D-TYPE FLIP FLOP WITH CLEAR

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74VHC273

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Table 7: AC Electrical Characteristics (Input tr = tf = 3ns)

(*) Voltage range is 3.3V

± 0.3V

(**) Voltage range is 5.0V

± 0.5V

Note 1: Parameter guaranteed by design. tsoLH = |tpLHm - tpLHn|, tsoHL = |tpHLm - tpHLn|

Table 8: 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/8 (per

Flip-Flop)

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.

tPLH

tPHL

Propagation Delay

Time

CLOCK to Q

3.3(*)

15

8.7

13.6

1.0

16.0

1.0

16.0

ns

3.3(*)

50

11.2

17.1

1.0

19.5

1.0

19.5

5.0(**)

15

5.8

9.0

1.0

10.5

1.0

10.5

5.0(**)

50

7.3

11.0

1.0

12.5

1.0

12.5

tPHL

Propagation Delay

Time

CLEAR to Q

3.3(*)

15

8.9

13.6

1.0

16.0

1.0

16.0

ns

3.3(*)

50

11.4

17.1

1.0

19.5

1.0

19.5

5.0(**)

15

5.2

8.5

1.0

10.0

1.0

10.0

5.0(**)

50

6.7

10.5

1.0

12.0

1.0

12.0

tW

CLEAR Pulse

Width LOW

3.3(*)

5.0

6.0

ns

5.0(**)

5.0

tW

CLOCK Pulse

Width HIGH or

LOW

3.3(*)

5.5

6.5

ns

5.0(**)

5.0

ts

Setup Time D to

CLOCK, HIGH or

LOW

3.3(*)

5.5

6.5

ns

5.0(**)

4.5

th

Hold Time D to

CLOCK, HIGH or

LOW

3.3(*)

1.0

ns

5.0(**)

1.0

tREM

Removal Time

CLEAR to CLOCK

3.3(*)

2.5

ns

5.0(**)

2.0

fMAX

Maximum Clock

Frequency

3.3(*)

15

75

120

65

MHz

3.3(*)

50

75

45

5.0(**)

15

120

165

100

5.0(**)

50

80

110

70

tOSLH

tOSHL

Output to Output

Skew time (note 1)

3.3(*)

50

1.5

ns

5.0(**)

50

1.0

Symbol

Parameter

Test Condition

Value

Unit

TA = 25°C

-40 to 85°C

-55 to 125°C

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

CIN

Input Capacitance

710

10

pF

CPD

Power Dissipation

Capacitance

(note 1)

31

pF

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