SN54ALS253, SN74ALS253, SN74AS253A

DUAL 1OF4 DATA SELECTORS/MULTIPLEXERS

WITH 3STATE OUTPUTS

SDAS216A − APRIL 1982 − REVISED DECEMBER 1994

4

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = MIN to MAX†

UNIT

(INPUT)

(OUTPUT)

SN54ALS253

SN74ALS253

MIN

MAX

MIN

MAX

tPLH

A or B

Any Y

5

30

5

21

ns

tPHL

A or B

Any Y

5

27

5

21

ns

tPLH

Data

Any Y

2

15

2

10

ns

tPHL

Data

(any C)

Any Y

3

18

3

14

ns

tPZH

OE

Any Y

3

20

3

14

ns

tPZL

OE

Any Y

2

19

4

16

ns

tPHZ

OE

Any Y

2

12

2

10

ns

tPLZ

OE

Any Y

2

18

2

14

ns

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡

Supply voltage, VCC

7 V

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

Input voltage, VI

7 V

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

Operating free-air temperature range, TA: SN74AS253A

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

SN74AS253A

UNIT

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IOH

High-level output current

−15

mA

IOL

Low-level output current

48

mA

TA

Operating free-air temperature

0

70

°C