NLV74VHC244DTR2G datasheet(4/7 Pages) ONSEMI

Part #	NLV74VHC244DTR2G

Description	Octal Bus Buffer

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MC74VHC244

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

Symbol

Parameter

Test Conditions

TA = 25°C

TA 3 85°C

−55°C 3 TA

3 125°C

Unit

Min

Typ

Max

Min

Max

Min

Max

tPLH,

tPHL

Maximum Propagation

Delay, A to YA or

B to YB

VCC = 3.3 ± 0.3 V CL = 15 pF

CL = 50 pF

5.8

8.3

8.4

11.9

1.0

10.0

13.5

1.0

11.0

14.5

ns

VCC = 5.0 ± 0.5 V CL = 15 pF

CL = 50 pF

3.9

5.4

5.5

7.5

1.0

6.5

8.5

1.0

7.5

9.5

tPZL,

tPZH

Output Enable Time

OEA to YA or

OEB to YB

VCC = 3.3 ± 0.3 V CL = 15 pF

RL = 1 kW

CL = 50 pF

6.6

9.1

10.6

14.1

1.0

12.5

16.0

1.0

13.5

17.0

ns

VCC = 5.0 ± 0.5 V CL = 15 pF

RL = 1 kW

CL = 50 pF

4.7

6.2

7.3

9.3

1.0

8.5

10.5

1.0

9.5

11.5

tPLZ,

tPHZ

Output Disable Time

OEA to YA or

OEB to YB

VCC = 3.3 ± 0.3 V CL = 50 pF

RL = 1 kW

10.3

14.0

1.0

16.0

1.0

17.0

ns

VCC = 5.0 ± 0.5 V CL = 50 pF

RL = 1 kW

6.7

9.2

1.0

10.5

1.0

11.5

tOSLH,

tOSHL

Output to Output Skew

VCC = 3.3 ± 0.3 V CL = 50 pF

(Note 6)

1.5

ns

VCC = 5.0 ± 0.5 V CL = 50 pF

(Note 6)

1.0

1.5

Cin

Maximum Input

Capacitance

4

10

pF

Cout

Maximum Three−State

Output Capacitance

(Output in High−Impedance

State)

6

pF

CPD

Power Dissipation Capacitance (Note 7)

Typical @ 25°C, VCC = 5.0V

pF

19

6. Parameter guaranteed by design. tOSLH = |tPLHm − tPLHn|, tOSHL = |tPHLm − tPHLn|.

7. 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 = 3.0 ns, CL = 50 pF, VCC = 5.0 V)

Symbol

Parameter

TA = 25°C

Unit

Typ

Max

VOLP

Quiet Output Maximum Dynamic VOL

0.6

0.9

V

VOLV

Quiet Output Minimum Dynamic VOL

−0.6

−0.9

V

VIHD

Minimum High Level Dynamic Input Voltage

3.5

V

VILD

Maximum Low Level Dynamic Input Voltage

1.5

V

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