SN54AC244, SN74AC244

OCTAL BUFFERS/DRIVERS

WITH 3STATE OUTPUTS

SCAS514E − JUNE 1995 − REVISED OCTOBER 2003

3

POST OFFICE BOX 655303

recommended operating conditions (see Note 3)

SN54AC244

SN74AC244

UNIT

MIN

MAX

MIN

MAX

UNIT

VCC

Supply voltage

2

6

2

6

V

VCC = 3 V

2.1

2.1

VIH

High-level input voltage

VCC = 4.5 V

3.15

3.15

V

VIH

High-level input voltage

VCC = 5.5 V

3.85

3.85

V

VCC = 3 V

0.9

0.9

VIL

Low-level input voltage

VCC = 4.5 V

1.35

1.35

V

VIL

Low-level input voltage

VCC = 5.5 V

1.65

1.65

V

VI

Input voltage

0

VCC

0

VCC

V

VO

Output voltage

0

VCC

0

VCC

V

VCC = 3 V

−12

−12

IOH

High-level output current

VCC = 4.5 V

−24

−24

mA

IOH

High-level output current

VCC = 5.5 V

−24

−24

mA

VCC = 3 V

12

12

IOL

Low-level output current

VCC = 4.5 V

24

24

mA

IOL

Low-level output current

VCC = 5.5 V

24

24

mA

∆t/∆v

Input transition rise or fall rate

8

8

ns/V

TA

Operating free-air temperature

−55

125

−40

85

°C

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.