74LVQ74 datasheet(5/11 Pages) STMICROELECTRONICS

Nome de Peças	74LVQ74

Descrição Electrónicos	DUAL D-TYPE FLIP FLOP WITH PRESET AND CLEAR

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AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500

Ω, Input tr =tf =3 ns)

Symb ol

Parameter

T est Con ditio n

Valu e

Un it

VCC

(V)

TA =25

oC

-40 to 85

oC

Min.

T yp.

Max.

Mi n.

Max.

tPLH

tPHL

Propagation Delay Time

CK to Q

2.7

8.0

19.0

21.0

ns

3.3

(*)

6.5

13.0

14.0

tPLH

tPHL

Propagation Delay Time

PR or CLR to Q

2.7

7.0

16.0

19.0

ns

3.3

(*)

6.0

12.0

13.0

tw

Pulse Width CK, HIGH

or LOW

2.7

1.5

7.0

10.0

ns

3.3

(*)

1.5

5.0

7.0

tw(L)

Pulse Width PR or CLR,

LOW

2.7

1.5

7.0

10.0

ns

3.3

(*)

1.5

5.0

7.0

ts

Setup Time D to CK

HIGH or LOW

2.7

-0.2

5.0

6.0

ns

3.3

(*)

-0.2

4.0

5.0

th

Hold Time Q to CK

HIGH or LOW

2.7

0.2

2.0

ns

3.3

(*)

0.2

2.0

tREM

Recovery Time PR or

CLR to Q

2.7

-1.0

1.0

ns

3.3

(*)

-1.0

1.0

fMAX

Maximum Clock

Frequency

2.7

60

200

40

MHz

3.3

(*)

100

250

100

tOSLZ

tOSHL

Output to Output Skew

Time (note 1, 2)

2.7

0.5

1.0

1.5

ns

3.3

(*)

0.5

1.0

1.5

1) Skew is defined as the absolute value of the difference between the actual propagation delay for any twooutputs of the same device switching in the

same direction, either HIGH or LOW

2) Parameter guaranteed by design

CAPACITIVE CHARACTERISTICS

Symb ol

Parameter

Test Co nditi ons

Valu e

Un it

VCC

(V)

TA =25

oC

-40 to 85

oC

Min.

T yp.

Max.

Mi n.

Max.

CIN

Input Capacitance

3.3

4

pF

CPD

Power Dissipation

Capacitance (note 1)

3.3

fIN = 10 MHz

33

pF

1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto

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

• VCC • fIN +ICC/n(per circuit)

74LVQ74

5/10

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