Datasheet




SDAS065B − DECEMBER 1982 − REVISED JANUARY 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
logic diagrams (positive logic)
OE
CLK
1D
1Q
1
11
2
19
To Seven Other Channels
1D
C1
OE
CLK
1D
1
Q
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.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN54ALS576B −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
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.7 0.8 V
I
OH
High-level output current −1 −2.6 mA
I
OL
Low-level output current 12 24 mA
f
clock
Clock frequency
′ALS576B 0 22 0 30
MHz
f
clock
Clock frequency
SN74ALS577A
0 30
MHz
t
w
Pulse duration
′ALS576B, CLK high or low 25 16.5
ns
t
w
Pulse duration
SN74ALS577A, CLK high or low
16.5
ns
t
su
Setup time before CLK↑
Data 15 15
ns
t
su
Setup time before CLK↑
SN74ALS577A CLR
15
ns
t
h
Hold time after CLK↑
Data 4 0
ns
t
h
Hold time after CLK↑
SN74ALS577A CLR
0
ns
T
A
Operating free-air temperature −55 125 0 70 °C