MC74HC244A

http://onsemi.com

2

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

±20

mA

±20

mA

Power Dissipation in Still Air, SOIC Package†

TSSOP Package†

500

450

mW

Storage Temperature

–65 to +150

_C

Lead Temperature, 1 mm from Case for 10 Seconds

(SOIC, SSOP or TSSOP Package)

260

_C

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of

these limits are exceeded, device functionality should not be assumed, damage may occur and

reliability may be affected.

†Derating: 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

DC Input Voltage, Output Voltage (Referenced to GND)

0

V

Operating Temperature, All Package Types

–55

+125

_C

Input Rise and Fall Time

(Figure 1)

0

0

0

1000

500

400

ns

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond

the Recommended Operating Ranges limits may affect device reliability.

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-

range GND

Unused inputs must always be

tied to an appropriate logic voltage

Unused outputs must be left open.