SN54AS250A, SN74AS250A

1OF16 DATA GENERATORS/MULTIPLEXERS

WITH 3STATE OUTPUTS

SDAS137A − DECEMBER 1983 − REVISED DECEMBER 1994

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−55

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74AS250A

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

SN54AS250A

SN74AS250A

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

IOH

High-level output current

−12

−15

mA

IOL

Low-level output current

32

48

mA

TA

Operating free-air temperature

−55

125

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54AS250A

SN74AS250A

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

MIN

TYP‡

MAX

UNIT

VIK

VCC = 4.5 V,

II = − 18 mA

− 1.2

− 1.2

V

VCC = 4.5 V to 5.5 V,

IOH = − 2 mA

VCC −2

VCC −2

VOH

VCC = 4.5 V

IOH = − 12 mA

2.4

3.3

V

VOH

VCC = 4.5 V

IOH = − 15 mA

2.4

3.3

V

VOL

VCC = 4.5 V

IOL = 32 mA

0.35

0.5

V

VOL

VCC = 4.5 V

IOL = 48 mA

0.35

0.5

V

IOZH

VCC = 5.5 V,

VO = 2.7 V

50

50

µA

IOZL

VCC = 5.5 V,

VO = 0.4 V

−50

−50

µA

II

VCC = 5.5 V,

VI = 7 V

0.1

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

IIL

VCC = 5.5 V,

VI = 0.4 V

− 0.5

− 0.5

mA

IO§

VCC = 5.5 V,

VO = 2.25 V

−30

−112

−30

−112

mA

Outputs high

26

42

26

42

ICC

VCC = 5.5 V

Outputs low

31

50

31

50

mA

ICC

VCC = 5.5 V

Outputs disabled

30

48

30

48

mA

‡ All typical values are at VCC = 5 V, TA = 25°C.

§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.