74LVX574 datasheet(4/8 Pages) ONSEMI

Il numero della parte	74LVX574

Spiegazioni elettronici	Octal D-Type Flip-Flop with 3-State Outputs

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MC74LVX574

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AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns)

TA = 25°C

TA = − 40 to 85°C

Symbol

Parameter

Test Conditions

Min

Typ

Max

Min

Max

Unit

fmax

Maximum Clock Frequency

(50% Duty Cycle)

VCC = 2.7V

CL = 15pF

CL = 50pF

60

45

115

60

50

40

ns

VCC = 3.3 ± 0.3V

CL = 15pF

CL = 50pF

80

50

125

75

65

45

tPLH,

tPHL

Propagation Delay

CP to O

VCC = 2.7V

CL = 15pF

CL = 50pF

9.2

11.5

14.5

18.0

1.0

17.5

21.0

ns

VCC = 3.3 ± 0.3V

CL = 15pF

CL = 50pF

8.5

11.0

13.2

16.7

1.0

15.5

19.0

tPZL,

tPZH

Output Enable Time

OE to O

VCC = 2.7V

CL = 15pF

RL = 1kW

CL = 50pF

9.8

11.4

15.0

18.5

1.0

18.5

22.0

ns

VCC = 3.3 ± 0.3V

CL = 15pF

RL = 1kW

CL = 50pF

8.2

10.7

12.8

16.3

1.0

15.0

18.5

tPLZ,

tPHZ

Output Disable Time

OE to O

VCC = 2.7V

CL = 50pF

RL = 1kW

12.1

19.1

1.0

22.0

ns

VCC = 3.3 ± 0.3V

CL = 50pF

RL = 1kW

11.0

15.0

1.0

17.0

tOSHL

tOSLH

Output−to−Output Skew

(Note 1)

VCC = 2.7V

CL = 50pF

VCC = 3.3 ±0.3V

CL = 50pF

1.5

ns

1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.

The specification applies to any outputs switching in the same direction, either HIGH−to−LOW (tOSHL) or LOW−to−HIGH (tOSLH); parameter

guaranteed by design.

CAPACITIVE CHARACTERISTICS

TA = 25°C

TA = − 40 to 85°C

Symbol

Parameter

Min

Typ

Max

Min

Max

Unit

Cin

Input Capacitance

4

10

pF

Cout

Maximum Three−State Output Capacitance

6

pF

CPD

Power Dissipation Capacitance (Note 2)

28

pF

2. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.

Average operating current can be obtained by the equation: ICC(OPR) = CPD VCC fin + ICC / 8 (per latch). CPD is used to determine the

no−load dynamic power consumption; PD = CPD VCC2 fin + ICC VCC.

NOISE CHARACTERISTICS (Input tr = tf = 3.0ns, CL = 50pF, VCC = 3.3V, Measured in SOIC Package)

TA = 25°C

Symbol

Characteristic

Typ

Max

Unit

VOLP

Quiet Output Maximum Dynamic VOL

0.5

0.8

V

VOLV

Quiet Output Minimum Dynamic VOL

−0.5

−0.8

V

VIHD

Minimum High Level Dynamic Input Voltage

2.0

V

VILD

Maximum Low Level Dynamic Input Voltage

0.8

V

TIMING REQUIREMENTS (Input tr = tf = 3.0ns)

TA = 25°C

TA = − 40 to 85°C

Symbol

Parameter

Test Conditions

Typ

Limit

Unit

tw(h)

Minimum Pulse Width, CP

VCC = 2.7V

VCC = 3.3 ±0.3V

6.5

5.0

7.5

5.0

ns

tsu

Minimum Setup Time, D to CP

VCC = 2.7V

VCC = 3.3 ±0.3V

5.0

3.5

5.0

3.5

ns

th

Minimum Hold Time, D to CP

VCC = 2.7V

VCC = 3.3 ±0.3V

1.5

ns

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