MC74LVX244_11 datasheet(4/7 Pages) ONSEMI

Part #	MC74LVX244

Description	Octal Bus Buffer

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Manufacturer	ONSEMI [ON Semiconductor]

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MC74LVX244

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

Symbol

Parameter

Test Conditions

TA = 25°C

TA = − 40 to 85°C

Unit

Min

Typ

Max

Min

Max

tPLH,

tPHL

Propagation Delay

Input to Output

VCC = 2.7V

CL = 15pF

CL = 50pF

6.1

8.6

11.4

14.9

1.0

13.5

17.0

ns

VCC = 3.3 ± 0.3V

CL = 15pF

CL = 50pF

4.7

7.2

7.1

10.6

1.0

8.5

12.0

tPZL,

tPZH

Output Enable Time to

High and Low Level

VCC = 2.7V

CL = 15pF

RL = 1kW

CL = 50pF

7.1

9.6

13.8

17.3

1.0

16.5

20.0

ns

VCC = 3.3 ± 0.3V

CL = 15pF

RL = 1kW

CL = 50pF

5.5

8.0

8.8

12.3

1.0

10.5

14.0

tPLZ,

tPHZ

Output Disable Time From

High and Low Level

VCC = 2.7V

CL = 50pF

RL = 1kW

11.6

16.0

1.0

19.0

ns

VCC = 3.3 ± 0.3V

CL = 50pF

RL = 1kW

9.7

11.4

1.0

13.0

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

Symbol

Parameter

TA = 25°C

TA = − 40 to 85°C

Unit

Min

Typ

Max

Min

Max

Cin

Input Capacitance

4

10

pF

Cout

Maximum Three−State Output Capacitance

6

pF

CPD

Power Dissipation Capacitance (Note 2)

19

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 bit). 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)

Symbol

Characteristic

TA = 25°C

Unit

Typ

Max

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

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