MC74VHC244DWR2G datasheet(3/8 Pages) ONSEMI

Part #	MC74VHC244DWR2G

Description	Octal Bus Buffer

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MC74VHC244

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RECOMMENDED OPERATING CONDITIONS

Symbol

Characteristics

Min

Max

Unit

VCC

DC Supply Voltage

2.0

5.5

V

VIN

DC Input Voltage

0

5.5

V

VOUT

DC Output Voltage

0

VCC

V

TA

Operating Temperature Range, all Package Types

−55

125

°C

tr, tf

Input Rise or Fall Time

VCC = 3.3 V + 0.3 V

VCC = 5.0 V + 0.5 V

0

100

20

ns/V

DEVICE JUNCTION TEMPERATURE VERSUS

TIME TO 0.1% BOND FAILURES

Junction

Temperature °C

Time, Hours

Time, Years

80

1,032,200

117.8

90

419,300

47.9

100

178,700

20.4

110

79,600

9.4

120

37,000

4.2

130

17,800

2.0

140

8,900

1.0

1

10

100

1000

TIME, YEARS

FAILURE RATE OF PLASTIC = CERAMIC

UNTIL INTERMETALLICS OCCUR

Figure 2. Failure Rate vs. Time Junction Temperature

DC CHARACTERISTICS (Voltages Referenced to GND)

VCC

TA = 25°C

TA ≤ 85°C

−55°C ≤ TA ≤ 125°C

Symbol

Parameter

Condition

(V)

Min

Typ

Max

Min

Max

Min

Max

Unit

VIH

Minimum High−Level

Input Voltage

2.0

3.0 to

5.5

1.5

VCCX

0.7

1.5

VCCX

0.7

1.5

VCCX

0.7

1.5

VCCX

0.7

V

VIL

Maximum Low−Level

Input Voltage

2.0

3.0 to

5.5

0.5

VCCX

0.3

0.5

VCCX

0.3

0.5

VCCX

0.3

V

VOH

Maximum High−Level

Output Voltage

VIN = VIH or VIL

IOH = −50 mA

2.0

3.0

4.5

1.9

2.9

4.4

2.0

3.0

4.5

1.9

2.9

4.4

1.9

2.9

4.4

V

VIN = VIH or VIL

IOH = −4 mA

IOH = −8 mA

3.0

4.5

2.58

3.94

2.48

3.8

2.34

3.66

VOL

Maximum Low−Level

Output Voltage

VIN = VIH or VIL

IOL = 50 mA

2.0

3.0

4.5

0.0

0.1

V

VIN = VIH or VIL

IOH = 4 mA

IOH = 8 mA

3.0

4.5

0.36

0.44

0.52

IIN

Input Leakage Current

VIN = 5.5 V or GND

0 to

5.5

±0.1

±1.0

mA

IOZ

Maximum 3−State

Leakage Current

VIN = VIH or VIL

VOUT = VCC or GND

5.5

±0.25

±2.5

mA

ICC

Maximum Quiescent

Supply Current

(per package)

VIN = VCC or GND

5.5

4.0

40.0

mA

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