74HC244 datasheet(3/7 Pages) ONSEMI

3 / 7 page

74HC244

http://onsemi.com

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min

Max

Unit

VCC

DC Supply Voltage (Referenced to GND)

2.0

6.0

Vin, Vout DC Input Voltage, Output Voltage (Referenced to GND)

VCC

Operating Temperature, All Package Types

– 55

+ 125

tr, tf

Input Rise and Fall Time

VCC = 2.0 V

(Figure 1)

VCC = 4.5 V

VCC = 6.0 V

1000

500

400

DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)

Guaranteed Limit

Symbol

Parameter

Test Conditions

VCC

(V)

– 55 to

25_C

v 85_C

v 125_C

Unit

VIH

Minimum High−Level Input Voltage Vout = VCC – 0.1 V

|Iout| v 20 mA

2.0

3.0

4.5

6.0

1.5

2.1

3.15

4.2

1.5

2.1

3.15

4.2

1.5

2.1

3.15

4.2

VIL

Maximum Low−Level Input Voltage Vout = 0.1 V

|Iout| v 20 mA

2.0

3.0

4.5

6.0

0.5

0.9

1.35

1.8

0.5

0.9

1.35

1.8

0.5

0.9

1.35

1.8

VOH

Minimum High−Level Output

Voltage

Vin = VIH

|Iout| v 20 mA

2.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

Vin = VIH |Iout| v 2.4 mA

|Iout| v 6.0 mA

|Iout| v 7.8 mA

3.0

4.5

6.0

2.48

3.98

5.48

2.34

3.84

5.34

2.2

3.7

5.2

VOL

Maximum Low−Level Output

Voltage

Vin = VIL

|Iout| v 20 mA

2.0

4.5

6.0

0.1

Vin = VIL |Iout| v 2.4 mA

|Iout| v 6.0 mA

|Iout| v 7.8 mA

3.0

4.5

6.0

0.26

0.33

0.4

Iin

Maximum Input Leakage Current

Vin = VCC or GND

6.0

±0.1

±1.0

IOZ

Maximum Three−State Leakage

Current

Output in High−Impedance State

Vin = VIL or VIH

Vout = VCC or GND

6.0

±0.5

±5.0

±10

ICC

Maximum Quiescent Supply

Current (per Package)

Vin = VCC or GND

Iout = 0 mA

6.0

4.0

NOTE: Information on typical parametric values and high frequency or heavy load considerations can be found in Chapter 2 of the ON

Semiconductor High−Speed CMOS Data Book (DL129/D).

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