SN74ALS156

DECODER/DEMULTIPLEXER

WITH OPEN-COLLECTOR OUTPUTS

SDAS099C – JUNE 1986 – REVISED MAY 1996

4

POST OFFICE BOX 655303

logic diagram (positive logic)

2

1

3

13

15

14

7

6

5

4

9

10

11

12

1Y0

1Y1

1Y2

1Y3

2Y0

2Y1

2Y2

2Y3

Strobe 2G

Strobe 1G

Data 1C

Data 2C

A

B

Select

7 V

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

7 V

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

0

°C to 70°C

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

–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

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

VOH

High-level output voltage

5.5

V

IOL

Low-level output current

8

mA

TA

Operating free-air temperature

0

70

°C