MC74HC240A

http://onsemi.com

3

MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

DC Supply Voltage (Referenced to GND)

– 0.5 to + 7.0

V

DC Input Voltage (Referenced to GND)

V

DC Output Voltage (Referenced to GND)

V

DC Input Current, per Pin

± 20

mA

DC Output Current, per Pin

± 35

mA

± 75

mA

Power Dissipation in Still Air,

Plastic DIP†

SOIC Package†

TSSOP Package†

750

500

450

mW

Storage Temperature

– 65 to + 150

_C

Lead Temperature, 1 mm from Case for 10 Seconds

(Plastic DIP, SOIC or TSSOP Package)

260

_C

Maximum ratings are those values beyond which device damage can occur. Maximum ratings

applied to the device are individual stress limit values (not normal operating conditions) and are

not valid simultaneously. If these limits are exceeded, device functional operation is not implied,

damage may occur and reliability may be affected.

†Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C

SOIC Package: – 7 mW/_C from 65_ to 125_C

TSSOP Package: − 6.1 mW/_C from 65_ to 125_C

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min

Max

Unit

DC Supply Voltage (Referenced to GND)

2.0

6.0

V

0

V

Operating Temperature, All Package Types

– 55

+ 125

_C

Input Rise and Fall Time

(Figure 1)

0

0

0

1000

500

400

ns

Guaranteed Limit

Symbol

Parameter

Test Conditions

V

– 55 to

25_C

v 85_C

v 125_C

Unit

Minimum High−Level Input Voltage

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

V

Maximum Low−Level Input Voltage

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

V

Minimum High−Level Output

Voltage

2.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

V

3.0

4.5

6.0

2.48

3.98

5.48

2.34

3.84

5.34

2.2

3.7

5.2

Maximum Low−Level Output

Voltage

2.0

4.5

6.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

V

3.0

4.5

6.0

0.26

0.26

0.26

0.33

0.33

0.33

0.4

0.4

0.4

Maximum Input Leakage Current

6.0

± 0.1

± 1.0

± 1.0

mA

This device contains protection

circuitry to guard against damage

due to high static voltages or electric

fields. However, precautions must

be taken to avoid applications of any

voltage higher than maximum rated

voltages to this high−impedance cir-

Unused inputs must always be

tied to an appropriate logic voltage

Unused outputs must be left open.