54AC16244, 74AC16244

16-BIT BUFFERS/LINE DRIVERS

WITH 3-STATE OUTPUTS

SCAS120A – MARCH 1990 – REVISED APRIL 1996

4

POST OFFICE BOX 655303

recommended operating conditions (see Note 3)

54AC16244

74AC16244

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage (see Note 4)

3

5

5.5

3

5

5.5

V

VCC = 3 V

2.1

2.1

VIH

High-level input voltage

VCC = 4.5 V

3.15

3.15

V

VCC = 5.5 V

3.85

3.85

VCC = 3 V

0.9

0.9

VIL

Low-level input voltage

VCC = 4.5 V

1.35

1.35

V

VCC = 5.5 V

1.65

1.65

VI

Input voltage

0

VCC

0

VCC

V

VO

Output voltage

0

VCC

0

VCC

V

VCC = 3 V

–4

–4

IOH

High-level output current

VCC = 4.5 V

–24

–24

mA

VCC = 5.5 V

–24

–24

VCC = 3 V

12

12

IOL

Low-level output current

VCC = 4.5 V

24

24

mA

VCC = 5.5 V

24

24

∆t/∆v

Input transition rise or fall rate

0

10

0

10

ns/V

TA

Operating free-air temperature

–55

125

–40

85

°C

NOTES:

3. Unused inputs should be tied to VCC through a pullup resistor of approximately 5 kW or greater to prevent them from floating.

4. All VCC and GND pins must be connected to the proper voltage supply.

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

54AC16244

74AC16244

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

3 V

2.9

2.9

2.9

IOH = –50 µA

4.5 V

4.4

4.4

4.4

5.5 V

5.4

5.4

5.4

VOH

IOH = –4 mA

3 V

2.58

2.48

2.48

V

IOH =24 mA

4.5 V

3.94

3.8

3.8

IOH = –24 mA

5.5 V

4.94

4.8

4.8

IOH = –75 mA†

5.5 V

3.85

3.85

3 V

0.1

0.1

0.1

IOL = –50 µA

4.5 V

0.1

0.1

0.1

5.5 V

0.1

0.1

0.1

VOL

IOL = 12 mA

3 V

0.36

0.44

0.44

V

IOL =24mA

4.5 V

0.36

0.44

0.44

IOL = 24 mA

5.5 V

0.36

0.44

0.44

IOL = 75 mA†

5.5 V

1.65

1.65

II

VI = VCC or GND

5.5 V

±0.1

±1

±1

µA

IOZ

VI = VCC or GND

5.5 V

±0.5

±5

±5

µA

ICC

VI = VCC or GND,

IO = 0

5.5 V

8

80

80

µA

Ci

VI = VCC or GND

5 V

4.5

pF

Co

VI = VCC or GND

5 V

12

pF

† Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.