SN54ALS580B, SN74ALS580B, SN74AS580

OCTAL DTYPE TRANSPARENT LATCHES

WITH 3STATE OUTPUTS

SDAS277 − JANUARY 1995

2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

logic diagram (positive logic)

OE

1D

2

1D

3

2D

4

3D

5

4D

6

5D

11

LE

19

18

17

16

15

14

13

12

7

6D

8

7D

9

8D

EN

1

OE

LE

1D

1Q

1

11

2

19

To Seven Other Channels

C1

1D

C1

1Q

2Q

3Q

4Q

5Q

6Q

7Q

8Q

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

7 V

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

7 V

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

Voltage applied to a disabled 3-state output

5.5 V

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

−55

°C to 125°C

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

SN74ALS580B

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

SN54ALS580B

SN74ALS580B

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

0.7

0.8

V

IOH

High-level output current

−1

− 2.6

mA

IOL

Low-level output current

12

24

mA

tw

Pulse duration, LE high

15

15

ns

tsu

Setup time, data before LE

↓

20

10

ns

th

Hold time, data after LE

↓

12

10

ns

TA

Operating free-air temperature

−55

125

0

70

°C