SN54ALS576B, SN54AS576

SN74ALS576B, SN74ALS577A, SN74AS576

OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS

SDAS065B – DECEMBER 1982 – REVISED JANUARY 1995

3

POST OFFICE BOX 655303

logic diagrams (positive logic)

OE

CLK

1D

1Q

1

11

2

19

To Seven Other Channels

1D

C1

OE

CLK

1D

1Q

2

14

3

22

To Seven Other Channels

1D

C1

1

CLR

′ALS576B, ′AS576

SN74ALS577A

Pin numbers shown are for the DW, J, N, and W packages.

Pin numbers shown are for the DW and NT packages.

7 V

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

7 V

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

Voltage applied to a disabled 3-state output

5.5 V

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

– 55

°C to 125°C

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

SN74ALS576B, SN74ALS577A

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

SN54ALS576B

SN74ALS576B

SN74ALS577A

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

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

f lk

Clock frequency

′ALS576B

0

22

0

30

MHz

fclock

Clock frequency

SN74ALS577A

0

30

MHz

t

Pulse duration

′ALS576B, CLK high or low

25

16.5

ns

tw

Pulse duration

SN74ALS577A, CLK high or low

16.5

ns

t

Set p time before CLK

↑

Data

15

15

ns

tsu

Setup time before CLK

↑

SN74ALS577A CLR

15

ns

th

Hold time after CLK

↑

Data

4

0

ns

th

Hold time after CLK

↑

SN74ALS577A CLR

0

ns

TA

Operating free-air temperature

–55

125

0

70

°C